■ Applications of magnetic nanoparticles in medicine and bioanalytics
■ Realisation of magnetic relaxation immunoassays using magnetic nanoparticles as markers.
■ Characterisation of magnetic nanoparticles by means of fluxgate magnetic relaxometry, AC susceptibility, rotating fields, Magnetic Particle Spectroscopy (MPS) and Photon Cross Correlation Spectroscopy (PCCS).
■ Investigation of the dynamic magnetic properties of magnetic nanoparticles in different matrices.
■ Development of highly sensitive magnetic field sensors and sensor systems
■ Superconducting quantum interferometers based on the high-Tc superconductor YBa2Cu3O7-x
■ Fluxgate sensors
■ Thin-film technology
■ Fabrication of thin films by pulsed laser deposition and RF magnetron sputtering
■ Optical and electron beam lithography
SFB 578 „Vom Gen zum Produkt“ (2004-2012)
DFG-Projekt: Dynamische Eigenschaften anisotroper magnetischer Fluide (2020-2023)
2024
Amplification- and Enzyme-Free Magnetic Diagnostics Circuit for Whole-Genome Detection of SARS-CoV-2 RNA
Enja Laureen Rösch, Rebecca Sack, Mohammad Suman Chowdhury, Florian Wolgast, Margarete Zaborski, Frank Ludwig, Meinhard Schilling, Thilo Viereck, Ulfert Rand, Aidin Lak
Chembiochem. 2024 May 6:e202400251
doi: 10.1002/cbic.202400251
Cooperative dynamics of DNA-grafted magnetic nanoparticles optimize magnetic biosensing and coupling to DNA origami
Aidin Lak, Yihao Wang, Pauline J. Kolbeck, Christoph Pauer, Mohammad Suman Chowdhury, Marco Cassani, Frank Ludwig, Thilo Viereck, Florian Selbach, Philip Tinnefeld, Meinhard Schilling, Tim Liedl, Joe Tavacolib, Jan Lipfert
Nanoscale, 16, 7678-7689 - 2024
doi: 10.1039/D3NR06253H
Improvements of magnetic nanoparticle assays for SARS-CoV-2 detection using a mimic virus approach
Tamara Kahmann, Florian Wolgast, Thilo Viereck, Meinhard Schilling, Frank Ludwig
Sensing and Bio-Sensing Research, Volume 44, id.100654 - 2024
doi: 10.1016/j.sbsr.2024.100654
Integrated hyperthermia and magnetic particle imaging system for localized drug-release
Thilo Viereck, Kai Luenne, Meinhard Schilling, Frank Ludwig
International Journal on Magnetic Particle Imaging, Vol. 10 No. 1 Suppl 1 - 2024
https://www.journal.iwmpi.org/index.php/iwmpi/article/view/723
Sparse-representation-based image reconstruction for magnetic particle imaging
Shijie Sun, Yaoyao Chen, Klaas-Julian Janssen, Thilo Viereck, Meinhard Schilling, Frank Ludwig, Lijun Xu, Jing Zhong
in IEEE Transactions on Instrumentation and Measurement, vol. 73, pp. 1-9, 2024, Art no. 6001209
doi: 10.1109/TIM.2023.3332394
Towards sensitive Magnetic Particle Spectroscopy-based immunoassays with adjustable DC offset fields
Florian Wolgast, Eike Wendt, Frank Ludwig, Meinhard Schilling, Thilo Viereck
International Journal on Magnetic Particle Imaging IJMPI, Vol. 10 No. 1 Suppl - 2024
https://www.journal.iwmpi.org/index.php/iwmpi/article/view/732
2023
Decoupling the Characteristics of Magnetic Nanoparticles for Ultrahigh Sensitivity
Mohammad Suman Chowdhury, Enja Laureen Rösch, Daniel Arenas Esteban, Klaas-Julian Janssen, Florian Wolgast, Frank Ludwig, Meinhard Schilling, Sara Bals, Thilo Viereck, and Aidin Lak
Nano Letters 2023 23 (1), 58-65
doi: 10.1021/acs.nanolett.2c03568
Functional magnetic nanoparticles: from synthesis design to in-depth characterization and nano-labelling for ultrasensitive magnetic biosensing
Rebecca Sack, Mayiz Zgheib, Mohammad Suman Chowdhury, Yihao Wang, Frank Ludwig, Meinhard Schilling, Thilo Viereck, Aidin Lak
IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), Sendai, Japan, 2023, pp. 1-2
doi: 10.1109/INTERMAGShortPapers58606.2023.10228506
Magnetic-field dependence of the magnetic dynamics of barium hexaferrite nanoplatelet suspensions
Melvin Küster, Hajnalka Nádasi, Alexey Eremin, Patricija Hribar Boštjančič, Frank Ludwig
Journal of Magnetism and Magnetic Materials, Volume 588, Part A, 2023,171368, ISSN 0304-8853
doi: 10.1016/j.jmmm.2023.171368
Role of ionic surfactant in magnetic dynamics of self-assembled dispersions of nanoplatelets
Hajnalka Nádasi, Melvin Küster, Alenka Mertelj, Nerea Sebastián, Patricija Hribar Boštjančič, Darja Lisjak, Thilo Viereck, Margaret Rosenberg, Alexey O. Ivanov, Sofia S. Kantorovich, Alexey Eremin, Frank Ludwig
J. Mol. Liqu. 382, 121900 - 2023
doi: 10.1016/j.molliq.2023.121900
2022
Magnetic dynamics in suspensions of ferrimagnetic platelets
Melvin Küster, Frank Ludwig, Alexey Eremin, Patricija Hribar Boštjančič, Darja Lisjak, Nerea Sebastián, Alenka Mertelj, Hajnalka Nádasi
Journal of Molecular Liquids, Volume 360, 2022, 119484
doi: 10.1016/j.molliq.2022.119484
Quantitative temperature visualization with single harmonic-based magnetic particle imaging
Klaas-Julian Janssen, Jing Zhong, Thilo Viereck, Meinhard Schilling, and Frank Ludwig
J. Magn. Magn. Mater. 563, 169915 - 2022
doi: 10.1016/j.jmmm.2022.169915
Single harmonic-based narrowband magnetic particle imaging
Klaas-Julian Janssen, Meinhard Schilling, Frank Ludwig, and Jing Zhong
Measurement Science and Technology, Volume 33, Number 9
doi: 10.1088/1361-6501/ac78c6
Tuning excitation field frequency for magnetic particle sensing using SPaQ
Melissa M. Horstman – van de Loosdrecht, Tamara Kahmann, Frank Ludwig, and Lejla Alic
J. Biomed. Nanotechn. 18, 1994-2000 - 2022
doi: 10.1166/jbn.2022.3406
2021
Dependence of biomolecule detection on magnetic nanoparticle concentration
Jing Zhong, Klaas-Julian Janssen, Sebastian Draack, Thilo Viereck, Meinhard Schilling, Frank Ludwig
Journal of Magnetism and Magnetic Materials, Volume 517, 167408 - 2021
doi: 10.1016/j.jmmm.2020.167408
Determination of the effective anisotropy constant of magnetic nanoparticles –comparison between two approaches
Tamara Kahmann, Enja Laureen Rösch, Keiji Enpuku, Takashi Yoshida, Frank Ludwig
J. Magn. Magn. Mater. 519, 167402 - 2021
doi: 10.1016/j.jmmm.2020.167402
Dynamic gelation process observed in Cartesian magnetic particle imaging
Sebastian Draack, Frank Ludwig, Meinhard Schilling, Thilo Viereck
Journal of Magnetism and Magnetic Materials, Volume 522, 167478, - 2021
doi: 10.1016/j.jmmm.2020.167478
Evaluation of effective magnetic anisotropy constant of magnetic nanoparticles from coercive field of AC magnetization curve
Keiji Enpuku, Sebastian Draack, Frank Ludwig, Takashi Yoshida
Journal of Applied Physics 14 November 2021; 130 (18): 183901 - 2021
doi: 10.1063/5.0070321
Point-of-need detection of pathogen-specific nucleic acid targets using magnetic particle spectroscopy
Enja Laureen Rösch, Jing Zhong, Aidin Lak, Zhe Liu, Markus Etzkorn, Meinhard Schilling, Frank Ludwig, Thilo Viereck, Birka Lalkens
Biosensors and Bioelectronics, Volume 192 - 2021
doi: 10.1016/j.bios.2021.113536
Single Harmonic-based Narrowband Magnetic Particle Imaging
Klaas-Julian Janssen, Meinhard Schilling, Frank Ludwig, Jing Zhong
Measurement Science and Technology, Volume 33, Number 9 - 2021
doi: 10.1088/1361-6501/ac78c6
Toward Rapid and Sensitive Detection of SARS-CoV-2 with Functionalized Magnetic Nanoparticles
Jing Zhong, Enja Laureen Rösch, Thilo Viereck, Meinhard Schilling, Frank Ludwig
ACS Sensors 2021 6 (3), 976-984 -2021
doi: 10.1021/acssensors.0c02160
2020
Magnetic field dependence of the effective magnetic moment of multi-core nanoparticles featured
Tamara Kahmann, Frank Ludwig
Journal of Applied Physics 127, 233901- 2020
doi: 10.1063/5.0011629
Magnetic nanoparticle-based biomolecule imaging with a scanning magnetic particle spectrometer
Jing Zhong, Meinhard Schilling, Frank Ludwig
Nanotechnology, Volume 31, page 225101 (9pp) - 2020
doi: 10.1088/1361-6528/ab776a
Rotational dynamics of magnetic nanoparticles in different matrix systems
Frank Ludwig, Hilke Remmer
Physical Sciences Reviews, vol. , no. , 2020, pp. 20190115 -2020
doi: 10.1515/psr-2019-0115
Scale-dependent particle diffusivity and apparent viscosity in polymer solutions as probed by dynamic magnetic Nanorheology
Melissa Hess, Micha Gratz, Hilke Remmer, Samira Webers, Joachim Landers, Dmitry Borin, Frank Ludwig, Heiko Wende, Stefan Odenbach, Andreas Tschöpe, Annette M. Schmidt
Soft Matter 16, 7562-7575-2020
doi: 10.1039/C9SM00747D
Static magnetic response of multicore particles
Alexey O. Ivanov, Frank Ludwig
Phys. Rev. E 102, 032603 - 2020
doi: 10.1103/PhysRevE.102.032603
Tailoring the Surface Plasmon Resonance Energy of Au nanowires array by defect management and thermal treatment
Hongdan Yan, Bo Liu, Guanghua Fan, Alexander Glamazda, Frank Ludwig, Meinhard Schilling, Renxi Gao, Peter Lemmens
Physica E: Low-dimensional Systems and Nanostructures 121, 114092 -2020
doi: 10.1016/j.physe.2020.114092
Visualization of spatial and temporal temperature distributions with magnetic particle imaging for liver tumor ablation therapy
Johannes Salamon, Jan Diekhoff, Michael Gerhard Kaul, Caroline Jung, Gerhard Adam, Martin Möddel, Tobias Knopp, Sebastian Draack, Frank Ludwig, Harald Ittrich
Scientific Reports, volume 10, Article number: 7480 (11pp)- 2020
doi: 10.1038/s41598-020-64280-1
2019
A novel characterization technique for superparamagnetic iron oxide nanoparticles: The superparamagnetic quantifier, compared with magnetic particle spectroscopy
Melissa M. van de Loosdrecht, Sebastian Draack, Sebastiaan Waanders, Jeroen Gerardus Leonard Schlief, Hendrikus Johannes Gradus Krooshoop, Thilo Viereck, Frank Ludwig, Bennie ten Haken
Rev. Sci. Instrum., Volume 90, page 024101 (1-9) - 2019
doi: 10.1063/1.5039150
Biophysical Characterization of (Silica-coated) Cobalt Ferrite Nanoparticles for Hyperthermia Treatment
Niklas Lucht, Ralf P. Friedrich, Sebastian Draack, Christoph Alexiou, Thilo Viereck, Frank Ludwig, Birgit Hankiewicz, Nanomaterials 2019, 9, 1713.
doi: 10.3390/nano9121713
Determination of dominating relaxation mechanisms from temperature-dependent Magnetic Particle Spectroscopy measurements
Sebastian Draack, Thilo Viereck, Felix Nording, Klaas-Julian Janssen, Meinhard Schilling, Frank Ludwig
Journal of Magnetism and Magnetic Materials, Volume 474, Pages 570-573 - 2019
doi: 10.1016/j.jmmm.2018.11.023
Effect of core size distribution on magnetic nanoparticle harmonics for thermometry
Zhongzhou Du, Yi Sun, Oji Higashi, Yuki Noguchi, Keiji Enpuku, Sebastian Draack, Klaas-Julian Janssen, Tamara Kahmann, Jing Zhong, Thilo Viereck, Frank Ludwig, Takashi Yoshida
Japanese Journal of Applied PhysicsVolume 59, Number 1, 010904
doi: 10.7567/1347-4065/ab5c9b
Magnetic field orientation dependent dynamic susceptibility and Brownian relaxation time of magnetic nanoparticles
Jing Zhong, Niklas Lucht, Birgit Hankiewicz, Meinhard Schilling, Frank Ludwig
Appl. Phys. Lett. 115, page 133102 (1-5) - 2019
doi: 10.1063/1.5120609
Multi-spectral Magnetic Particle Spectroscopy for the investigation of particle mixtures
Thilo Viereck, Sebastian Draack, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., Volume 475, page 647--651 - 2019
doi: 10.1016/j.jmmm.2018.11.021
Multiparametric Magnetic Particle Spectroscopy of CoFe2O4 Nanoparticles in Viscous Media
Sebastian Draack, Niklas Lucht, Hilke Remmer, Michael Martens, Birgit Fischer, Meinhard Schilling, Frank Ludwig, Thilo Viereck
J. Phys. Chem. C, 123 (11), pages 6787–6801 - 2019
doi: 10.1021/acs.jpcc.8b10763
2018
Cellular effects of paclitaxel-loaded iron oxide nanoparticles on breast cancer using different 2D and 3D cell culture models
Stephan Lugert, Harald Unterweger, Marina Mühlberger, Christina Janko, Sebastian Draack, Frank Ludwig, Dietmar Eberbeck, Christoph Alexiou, Ralf P. Friedrich
Internat. Journal of Nanomedicine, Volume 14, page 161--180 - 2018
doi: 10.2147/IJN.S187886
Excitation frequency dependence of temperature resolution in magnetic nanoparticle temperature imaging with a scanning magnetic particle spectrometer
Jing Zhong, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., Volume 471, page 340--345 - 2018
doi: 10.1016/j.jmmm.2018.09.112
Field-dependent dynamic responses from dilute magnetic nanoparticle dispersions
Jeppe Fock, Christoph Balceris, Rocio Costo, Lunjie Zeng, Frank Ludwig, Mikkel F. Hansen Nanoscale, Volume 10, page 2052--2066 - 2018
doi: 10.1039/c7nr07602a
Magnetic nanoparticle temperature imaging with a scanning magnetic particle spectrometer
Jing Zhong, Meinhard Schilling, Frank Ludwig
Measurement Science and Technology, Volume 29, page 115903 (9pp) - 2018
doi: 10.1088/1361-6501/aae3bd
Magnetic Relaxation of Agglomerated and Immobilized Iron Oxide Nanoparticles for Hyperthermia and Imaging Applications
Ulrich Michael Engelmann, Eva Miriam Buhl, Sebastian Draack, Thilo Viereck, Frank Ludwig, Thomas Schmitz-Rode, Ioana Slabu
IEEE Magnetics Letters, Volume 9, page 1507305 (5pp) - 2018
doi: 10.1109/LMAG.2018.2879034
Modeling the Impedance of Water-Cooled Core-Less Multi-Layered Solenoid Coils for MPI Drive Field Generation
Christian Kuhlmann, Sebastian Draack, Thilo Viereck, Meinhard Schilling, Frank Ludwig
Internat. Journal on Magnetic Particle Imaging, Volume 4, Number 1, page - 2018
doi: 10.18416/ijmpi.2018.1804001
Relating Magnetic Properties and High Hyperthermia Performance of Iron Oxide Nanoflowers
Philipp Bender, Jeppe Fock, Cathrine Frandsen, Mikkel F. Hansen, Christoph Balceris, Frank Ludwig, Oliver Posth, Erik Wetterskog, Lara K. Bogart, Paul Southern, Wojciech Szczerba, Lunjie Zeng, Kerstin Witte, Cordula Grüttner, Fritz Westphal, Dirk Honecker, David Gonzáles-Alonso, Luis Fernandez Barquin, Christer Johansson
J. Phys. Chem. C, Volume 122, Number 5, page 3068–3077 - 2018
doi: 10.1021/acs.jpcc.7b11255
Spatial and temperature resolutions of magnetic nanoparticle temperature imaging with a scanning magnetic particle spectrometer
Jing Zhong, Meinhard Schilling, Frank Ludwig
Nanomaterials, Volume 8, page 866 (1-13) - 2018
doi: 10.3390/nano8110866
2017
Analysis of AC Susceptibility Spectra for the Characterization of Magnetic Nanoparticles
Frank Ludwig, Christoph Balceris, Christian Jonasson, Christer Johansson
IEEE Trans. Magn., Volume 53, Number 11 - 2017
doi: 10.1109/TMAG.2017.2693420
Colloidal Flower-Shaped Iron Oxide Nanoparticles: Synthesis Strategies and Coatings
Helena Gavilan, Anja Kowalski, David Heinke, Abhilash Sugunan, Jens Sommertune, Miriam Varón, Lara K. Bogart, Oliver Posth, Lunjie Zeng, David Gonzáles-Alonso, Christoph Balceris, Jeppe Fock, Erik Wetterskog, Cathrine Frandsen, Nicole Gehrke, Cordula Grüttner, Andrea Fornara, Frank Ludwig, Sabino Veintemillas-Verdaguer, Christer Johansson, Maria del Puerto Morales
Part. Part. Syst. Charact., Volume 34, page 1700094 - 2017
doi: 10.1002/ppsc.201700094
Distribution functions of magnetic nanoparticles determined by a numerical inversion method
Philipp Bender, Christoph Balceris, Frank Ludwig, Oliver Posth, Lara K. Bogart, Wojciech Szczerba, Alejandra Castro, Lars Nilsson, Rocio Costo, Helena Gavilan, David Gonzáles-Alonso, Imanol de Pedro, Luis Fernandez Barquin, Christer Johansson
New J. Phys., Volume 19, page 073012 - 2017
doi: 10.1088/1367-2630/aa73b4
Dual-frequency magnetic particle imaging of the Brownian particle contribution
Thilo Viereck, Christian Kuhlmann, Sebastian Draack, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., Volume 427, page 156--161 - 2017
doi: 10.1016/j.jmmm.2016.11.003
Dynamics of magnetic nanoparticles in viscoelastic media Hilke Remmer, Eric Roeben, Annette M. Schmidt, Meinhard Schilling, Frank Ludwig J. Magn. Magn. Mater., Volume 427, page 331--335 - 2017
doi: 10.1016/j.jmmm.2016.10.075
Effect of alignment of easy axes on dynamic magnetization of immobilized magnetic nanoparticles
Takashi Yoshida, Yuki Matsugi, Naotaka Tsujimara, Teruyoshi Sasayama, Keiji Enpuku, Thilo Viereck, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., Volume 427, page 162--167 - 2017
doi: 10.1016/j.jmmm.2016.10.040
HTS Multimaterial Gradiometer Modules for YBa2Cu3O7 SQUID Systems
Benedikt Hampel, Michael Martens, Marius Temming, Thomas Trame, Frank Ludwig, Meinhard Schilling
IEEE Tran. Appl. Supercond., Volume 27, Number 4 - 2017
doi: 10.1109/TASC.2017.2672724
In vivo liver visualizations with magnetic particle imaging based on the calibration measurement approach
Jan Dieckhoff, Michael Kaul, Tobias Mummert, Caroline Jung, Johannes Salamon, Gerhard Adam, Tobias Knopp, Frank Ludwig, Christoph Balceris, Harald Ittrich
Phys. Med. Biol., Volume 62, page 3470--3482 - 2017
doi: 10.1088/1361-6560/aa562d
Magnetic Field Dependence of Ni Nanorod Brownian Relaxation
Hilke Remmer, Micha Gratz, Andreas Tschöpe, Frank Ludwig
IEEE Trans. Magn., Volume 53, Number 11 - 2017
doi: 10.1109/TMAG.2017.2701145
Magnetic nanoparticle thermometry independent of Brownian relaxation
Jing Zhong, Meinhard Schilling, Frank Ludwig
J. Phys. D: Appl. Phys., Volume 51, Number 015001, page 9 - 2017
doi: 10.1088/1361-6463/aa993d
Measurement system for temperature dependent noise characterization of magnetoresistive sensors
Felix Nording, Sebastian Weber, Frank Ludwig, Meinhard Schilling
Rev. Sci. Instrum., Volume 88, Number 3 - 2017
doi: 10.1063/1.4978324
Messaufbau zur Charakterisierung von magnetischen Sensormaterialien
Felix Nording, Niklas Boy, Frank Ludwig, Meinhard Schilling
Technisches Messen, Volume 84, Number 3, page 174--180 - 2017
doi: 10.1515/teme-2016-0064
Offsetunterdrücktes AMR-Magnetometer mit 100 kHz Frequenzbandbreite
Felix Nording, Waldemar Bischel, Frank Ludwig, Meinhard Schilling
Technisches Messen, Volume 84 (S1), page 102--105 - 2017
doi: 10.1515/teme-2017-0041
Size analysis of single-core magnetic nanoparticles
Frank Ludwig, Christoph Balceris, Thilo Viereck, Oliver Posth, Uwe Steinhoff, Helena Gavilan, Rocio Costo, Maria del Puerto Morales, Lunjie Zeng, Eva Olsson, Christian Jonasson, Christer Johansson
J. Magn. Magn. Mater., Volume 427, page 19--24 - 2017
doi: 10.1016/j.jmmm.2016.11.113
Temperature-dependent MPS measurements
Sebastian Draack, Thilo Viereck, Christian Kuhlmann, Meinhard Schilling, Frank Ludwig
Internat. Journal on Magnetic Particle Imaging, Volume 3, Number 1 - 2017
doi: 10.18416/ijmpi.2017.1703018
The Anisotropy of the AC Susceptibility of Immobilized Magnetic Nanoparticles—the Influence of Intra-Potential- Well Contribution on the AC Susceptibility Spectrum
Frank Ludwig, Christoph Balceris, Christer Johansson
IEEE Trans. Magn., Volume 53, Number 11 - 2017
doi: 10.1109/TMAG.2017.2692038
Unravelling viscosity effects to tailor the dynamical magnetic response of magnetic nanocubes
David Cabrera, Aidin Lak, Takashi Yoshida, Maria Elena Materia, Daniel Ortega, Frank Ludwig, Pablo Guardia, Ayyappan Sathya, Teresa Pellegrino, Francisco J. Teran
Nanoscale, Volume 9, page 5094--5101 - 2017
doi: 10.1039/c7nr00810d
2016
A shielded fluxgate sensor for spatially resolved measurements of magnetic dipole fields
Dennis Rühmer, Frank Ludwig, Meinhard Schilling
Sensors & Actuators A: Physical, Volume 238, page 229--233 - 2016
doi: 10.1016/j.sna.2015.12.020
Diffusion-Controlled Synthesis of Magnetic Nanoparticles
David Heinke, Nicole Gehrke, Daniel Schmidt, Uwe Steinhoff, Thilo Viereck, Hilke Remmer, Frank Ludwig, M. Posfai, Andreas Briel
Internat. Journal on Magnetic Particle Imaging, Volume 2, page 1603001-1--4 - 2016
https://journal.iwmpi.org/index.php/iwmpi/article/view/25
Dynamics of CoFe2O4 Single-Core Nanoparticles in Viscoelastic Media
Hilke Remmer, Jan Dieckhoff, Andreas Tschöpe, Eric Roeben, Annette M. Schmidt, Frank Ludwig
Physics Procedia, Volume 75, page 1150--1157, 2016
doi: 10.1016/j.phpro.2015.12.186
Homogeneous biosensing based on magnetic particle labels
Stefan Schrittwieser, Beatriz Pelaz, Wolfgang J. Parak, Sergio Lentijo-Mozo, Katerina Soulantica, Jan Dieckhoff, Frank Ludwig, Annegret Guenther, Andreas Tschöpe, Jörg Schotter
Sensors, Volume 2016, Number 16(6) - 2016
doi: 10.3390/s16060828
Influence of static magnetic field strength on the temperature resolution of a magnetic nanoparticle thermometer
Jing Zhong, Jan Dieckhoff, Meinhard Schilling, Frank Ludwig
J. Appl. Phys. Volume 120, page 143902-1--8 - 2016
doi: 10.1063/1.4964696
Magnetic-field dependence of Brownian and Néel relaxation times
Jan Dieckhoff, Dietmar Eberbeck, Meinhard Schilling, Frank Ludwig
J. Appl. Phys., Volume 119, page 043903-1--8 - 2016
doi: 10.1063/1.4940724
Magnetisierungsmessaufbau zur magnetischen Charakterisierung dünner Permalloyschichten
Felix Nording, Niklas Boy, Frank Ludwig, Meinhard Schilling
XXX. Messtechnisches Symposium des AHMT e.V., Stefan Zimmermann (Hrsg.), page 159--166, 2016
doi: 10.1515/9783110494297-021
Magnetorelaxometry of few Fe3O4 nanoparticles at 77 K employing a self-compensated SQUID magnetometer
Alexander Guillaume, Jan M. Scholtyssek, Alexander Kassner, Frank Ludwig, Meinhard Schilling
J. Magn. Magn. Mater., Volume 408, page 46--50 - 2016
doi: 10.1016/j.jmmm.2016.01.071
Simultaneous Study of Brownian and Néel Relaxation Phenomena in Ferrofluids by Mössbauer Spectroscopy
Joachim Landers, S. Salamon, Hilke Remmer, Frank Ludwig, Heiko Wende
Nanoletters, Volume 16, page 1150--1155 - 2016
doi: 10.1021/acs.nanolett.5b04409
2015
A phenomenological description of the MPS-signal using a model for the field dependence of the effective relaxation time
Daniel Schmidt, Florian Palmetshofer, David Heinke, Uwe Steinhoff, Frank Ludwig
IEEE Trans. Magn. 51, 6501404, 2015
doi: 10.1109/TMAG.2014.2345192
Classification of magnetic nanoparticle systems - synthesis, standardization and analysis methods in the NanoMag project
Sara Bogren, Andrea Fornara, Frank Ludwig, Maria del Puerto Morales, Uwe Steinhoff, Mikkel F. Hansen, Olga Kazakova, Christer Johansson
Int. J. Mol. Sci., Volume 16, page 20308--20325 - 2015
doi: 10.3390/ijms160920308
Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy
Thilo Wawrzik, Takashi Yoshida, Meinhard Schilling, Frank Ludwig
IEEE Trans Magn. 51, 5300404, 2015
doi: 10.1109/TMAG.2014.2332371
Dipole-Sensitive Homogeneous-Field Compensated High-Tc DC SQUID
Alexander Guillaume, Frank Ludwig, Denis Kajevic, Jan M. Scholtyssek, Meinhard Schilling
IEEE Trans. Appl. Supercond., Volume 25, page 1600405, 2015
doi: 10.1109/TASC.2014.2359764
Drive-field frequency dependent MPI performance of single-core magnetite nanoparticle tracers
Christian Kuhlmann, Amit P. Khandhar, Richard M. Ferguson, Scott J. Kemp, Thilo Wawrzik, Meinhard Schilling, Kannan M. Krishnan, Frank Ludwig
IEEE Trans. Magn. 51, 6500504, 2015
doi: 10.1109/TMAG.2014.2329772
Effective particle magnetic moment of multi-core particles
Fredrik Ahrentorp, Andrea Astalan, Jakob Blomgren, Christian Jonasson, Erik Wetterskog, Peter Svedlindh, Aidin Lak, Frank Ludwig, Leo J. van Ijzendoorn, Fritz Westphal, Cordula Grüttner, Nicole Gehrke, Stefan Gustafsson, Eva Olsson and Christer Johansson
J. Magn. Magn. Mater., 380, 221–226, 2015
doi: 10.1016/j.jmmm.2014.09.070
Magnetic characterization of clustered core magnetic nanoparticles for MPI
Nicole Gehrke, David Heinke, Dietmar Eberbeck, Frank Ludwig, Thilo Wawrzik, Christian Kuhlmann, Briel Andreas
IEEE Trans. Magn. 51, 5300204, 2015
doi: 10.1109/TMAG.2014.2358275
Noise properties of textile, capacitive EEG electrodes
Sara Nazari Asl, Frank Ludwig, Meinhard Schilling
Current Directions in Biomedical Engineering, Volume 1, Number 1, page 34--37, 2015
doi: 10.1515/cdbme-2015-0009
Polymer/iron oxide nanoparticle composites - a straight forward and scalable synthesis approach
Jens Sommertune, Abhilash Sugunan, Anwar Ahniyaz, Rebecca Stjernberg Bejhed, Anne Sarwe, Christer Johansson, Christoph Balceris, Frank Ludwig, Andrea Fornara
Int. J. Mol. Sci., Volume 16, page 19752--19768 - 2015
doi: 10.3390/ijms160819752
Preparation of core-shell hybrid materials by producing a protein corona around magnetic nanoparticles
Andreas Weidner, C Gräfe, M von der Lühe, Hilke Remmer, Joachim H. Clement, Dietmar Eberbeck, Frank Ludwig, Robert Müller, Felix H. Schacher, Silvio Dutz Nanoscale Res. Lett., Volume 10, page 282--1 - 11 - 2015
doi: 10.1186/s11671-015-0992-2
Resolving particle size modality in bi-modal iron oxide nanoparticle suspensions
Aidin Lak, Andreas F. Thünemann, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., 380, 140–143, 2015
doi: 10.1016/j.jmmm.2014.08.050
Single-core magnetic markers in rotating magnetic field based homogeneous bioassays and the law of mass action
Jan Dieckhoff, Stefan Schrittwieser, Joerg Schotter, Hilke Remmer, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., 380, 205–208, 2015
doi: 10.1016/j.jmmm.2014.10.088
Suitability of magnetic single- and multi-core nanoparticles to detect protein binding with dynamic magnetic measurement techniques
Hilke Remmer, Jan Dieckhoff, Meinhard Schilling, Frank Ludwig
J. Magn. Magn. Mater., 380, 236–240, 2015
doi: 10.1016/j.jmmm.2014.10.087
Vector fluxgate magnetometer for high operation temperatures up to 250°C
Dennis Rühmer, Sebastian Bögeholz, Frank Ludwig, Meinhard Schilling
Sensors & Actuators A: Physical, Volume 228, page 118--124 - jun 2015
doi: 10.1016/j.sna.2015.03.004
2014
Design of experiments for highly reproducible pulsed laser deposition
of YBa2Cu3O7−δ
Meinhard Schilling, Alexander Guillaume, Jan M. Scholtyssek, Frank Ludwig
J. Phys. D: Appl. Phys. 47, 034008-1 – 10, 2014
doi: 10.1088/0022-3727/47/3/034008
Direct Protein Detection in the Sample Solution by Monitoring Rotational Dynamics of Nickel Nanorods
Stefan Schrittwieser, Frank Ludwig, Jan Dieckhoff, Andreas Tschöpe, Annegret Günther, Andreas Huetten, Hubert Brueckl, Jörg Schotter
Small, Volume 10, Issue 2, 407–411, 2014
doi: 10.1002/smll.201300023
Dynamic magnetic properties of optimized magnetic nanoparticles for magnetic particle imaging
Frank Ludwig, Christian Kuhlmann, Thilo Wawrzik, Jan Dieckhoff, Aidin Lak, Amit P. Khandhar, Richard M. Ferguson, Scott J. Kemp, Kannan M. Krishnan
IEEE Trans. Magn., Vol. 50, 5101804, 2014
doi: 10.1109/TMAG.2014.2329504
Magnetic marker based homogeneous bioassays utilizing rotating magnetic fields
Jan Dieckhoff, Meinhard Schilling, Frank Ludwig
J. Appl. Phys., Volume 115, 17B304, 2014
doi: 10.1063/1.4862943
Magnetic, structural and particle size analysis of single- and multi-core magnetic nanoparticles
Frank Ludwig, Olga Kazakova, Luis Fernández Barquín, Andrea Fornara, Lutz Trahms, Uwe Steinhoff, Peter Svedlindh, Erik Wetterskog, Quentin A. Pankhurst, Paul Southern, Maria del Puerto Morales, Mikkel Faugt Hansen, Cathrine Frandsen, Eva Olsson, Stefan Gustafsson, Nicole Gehrke, Kerstin Lüdtke-Buzug, Cordula Grüttner, Christian Jonasson, and Christer Johansson
IEEE Trans. Magn. 50, 5300204, 2014
doi: 10.1109/TMAG.2014.2321456
Protein detection with magnetic nanoparticles in a rotating magnetic field
Jan Dieckhoff, Aidin Lak, Meinhard Schilling, Frank Ludwig
J. Appl. Phys., Volume 115, 024701, 2014
doi: 10.1063/1.4861032
Self-consistent magnetic properties of magnetite tracers optimized for magnetic particle imaging measured by ac susceptometry, magnetorelaxometry and magnetic particle spectroscopy
Frank Ludwig, Hilke Remmer, Christian Kuhlmann, Thilo Wawrzik, Hamed Arami, R. Matthew Ferguson, Kannan M. Krishnan
in: J. Magn. Magn. Mater. 360, 169-173, 2014
doi: 10.1016/j.jmmm.2014.02.020
2013
A 3D MPI system for biological studies on mice
Christian Kuhlmann, Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
International Workshop on Magnetic Particle Imaging, IWMPI 2013, Berkeley, CA art.no. 6528373, IEEE XPlore, 2013
doi: 10.1109/IWMPI.2013.6528373
Characterization of magnetic nanoparticle systems with respect to their magnetic particle imaging performance
Frank Ludwig, Dietmar Eberbeck, Norbert Löwa, Uwe Steinhoff, Thilo Wawrzik, Meinhard Schilling, Lutz Trahms
Biomed Tech (Berl). 2013 Dec;58(6):535-45.
doi: 10.1515/bmt-2013-0013
Effect of Brownian relaxation in frequency-dependent Magnetic Particle Spectroscopy measurements
Thilo Wawrzik, Christian Kuhlmann, Hilke Remmer, Nicole Gehrke, Andreas Briel, Meinhard Schilling, Frank Ludwig
International Workshop on Magnetic Particle Imaging, IWMPI 2013, Berkeley, CA art.no. 6528371, IEEE XPlore - 2013
doi: 10.1109/IWMPI.2013.6528371
Estimating particle mobility in MPI
Thilo Wawrzik, Christian Kuhlmann, Frank Ludwig, Meinhard Schilling
International Workshop on Magnetic Particle Imaging, IWMPI 2013, Berkeley, CA art.no. 6528372, IEEE XPlore - 2013
doi: 10.1109/IWMPI.2013.6528372
Field Stability of a Directly Coupled High-Tc SQUID Design Regarding MRX Measurements
Alexander Guillaume, Frank Ludwig, Jan M. Scholtyssek, Meinhard Schilling
IEEE Tran. Appl. Supercond., Volume 23, Number 3 - jun 2013
doi: 10.1109/TASC.2012.2231893
Highly stable monodisperse PEGylated iron oxide nanoparticle aqueous suspensions: a nontoxic tracer for homogeneous magnetic bioassays
Aidin Lak, Frank Ludwig, Jan Dieckhoff, Jan M. Scholtyssek, Oliver Goldmann, Heinrich Lünsdorf, Dietmar Eberbeck, Andreas Kornowski, Matthias Kraken, Fred J. Litterst, Kathrin Fiege, Petra Mischnick, Meinhard Schilling
Nanoscale, Volume 5, page 11447-11455, 2013
doi: 10.1039/C3NR02197A
Magnetic Particle Imaging-Scanner with 10 kHz drive-field frequency
Meinhard Schilling, Frank Ludwig, Christian Kuhlmann, Thilo Wawrzik
Biomedical Engineering - 2013
Biomed Tech (Berl). 2013 Dec;58(6):557-63.
doi: 10.1515/bmt-2013-0014
Scanner setup and reconstruction for three-dimensional magnetic particle imaging
Thilo Wawrzik, Christian Kuhlmann, Frank Ludwig, Meinhard Schilling
Proceedings of SPIE 8672, 86721B - 2013
doi: 10.1117/12.2006392
Size Distribution and Magnetization Optimization of Single-Core Iron Oxide Nanoparticles by Exploiting Design of Experiment Methodology
Aidin Lak, Frank Ludwig, Jan M. Scholtyssek, Jan Dieckhoff, Kathrin Fiege, Meinhard Schilling
in IEEE Trans. Magn., 49, 2013, 201-207
doi: 10.1109/TMAG.2012.2224325
Size dependent structural and magnetic properties of FeO-F3O4 nanoparticles
Aidin Lak, Matthias Kraken, Frank Ludwig, Andreas Kornowski, Dietmar Eberbeck, Sibylle Sievers, Fred J. Litterst, Horst Weller, Meinhard Schilling
Nanoscale 5, 12286-12295, 2013
doi: 10.1039/c3nr04562e
Tuning the magnetic properties of metal oxide nanocrystal heterostructures by cation exchange
Mykhailo Sytnyk, Raimund Kirchschlager, Maryna I. Bodnarchuk, Daniel Primetzhofer, Dominik Kriegner, Herbert Ennser, Julian Stangl, Peter Bauer, Michael Voith, Achim W. Hassel, Frank Krumeich, Frank Ludwig, Arno Meingast, Gerald Kothleitner, Maksym V. Kovalenko, Wolfgang Heiss
Nanoletters, Volume 13, 586–593, 2013
doi: 10.1021/nl304115r
2012
Characterization of Magnetic Nanoparticles for Magnetic Particle Imaging by Magnetorelaxometry, AC Susceptibility, Magnetic Particle Spectroscopy and Static Magnetization Measurements
Frank Ludwig, Thilo Wawrzik, Meinhard Schilling
Magnetic Particle Imaging, Springer Proceedings in Physics, Volume 140, 35–40, 2012
doi: 10.1007/978-3-642-24133-8_6
Characterization of Resovist nanoparticles for magnetic particle imaging
Takashi Yoshida, Keiji Enpuku, Frank Ludwig, Jan Dieckhoff, Thilo Wawrzik, Aidin Lak, Meinhard Schilling
Magnetic Particle Imaging, Springer Proceedings in Physics, Volume 140, 3–7, 2012
doi: 10.1007/978-3-642-24133-8_1
Fluxgate magnetorelaxometry: A new approach to study the release properties of hydrogel cylinders and microspheres
Stefanie Wöhl-Bruhn, Erik Heim, Ariane Schwoerer, Andreas Bertz, Steffen Harling, Henning Menzel, Meinhard Schilling, Frank Ludwig, Heike Bunjes
Internat. J. Pharmaceutics, Volume 436, 677–684, 2012
doi: 10.1016/j.ijpharm.2012.07.021
Homogeneous bioassays based on the manipulation of magnetic nanoparticles by rotating and alternating magnetic fields – a comparison
Jan Dieckhoff, Takashi Yoshida, Keiji Enpuku, Meinhard Schilling, Frank Ludwig
IEEE Trans. Magn., Volume 48, 3792-3795, 2012
doi: 10.1109/TMAG.2012.2198797
Magnetic fluid dynamics in a rotating magnetic field
Takashi Yoshida, Keiji Enpuku, Jan Dieckhoff, Meinhard Schilling, Frank Ludwig
J. Appl. Phys., Volume 111, 053901-1-10, 2012
doi: 10.1063/1.3688254
Magnetic Particle Imaging: Exploring particle mobility
Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
Magnetic Particle Imaging, Springer Proceedings in Physics, Volume 140, 16–23, 2012
doi: 10.1007/978-3-642-24133-8_4
Modeling and Development of a Biosensor Based on Optical Relaxation Measurements of Hybrid Nanoparticles
Stefan Schrittwieser, Frank Ludwig, Jan Dieckhoff, Katerina Soulantica, Guillaume Viau, Lise-Marie Lacroix, Sergio Mozo Lentijo, Rym Boubekri, Jerome Maynadie, Andreas Huetten, Hubert Brueckl, Jörg Schotter
ACS Nano, 2012
doi: 10.1021/nn2042785
Nanoanalytics for protein production processes
Meinhard Schilling, Frank Ludwig
From gene to product - Development of biotechnological processes by integrating genetic and engineering methods, Cuvillier Verlag, 195–210, 2012
New Perspectives for MPI: A Toolbox for Tracer Research
Nicole Gehrke, Andreas Briel, Frank Ludwig, Hilke Remmer, Thilo Wawrzik, Stefan Wellert
Magnetic Particle Imaging, Volume 140, 99–103, 2012
doi: 10.1007/978-3-642-24133-8_16
Optimization of magnetic nanoparticles for magnetic particle imaging
Frank Ludwig, Thilo Wawrzik, Takashi Yoshida, Nicole Gehrke, Andreas Briel, Dietmar Eberbeck, Meinhard Schilling
IEEE Trans. Magn., Volume 48, 3780–3783, 2012
doi: 10.1109/TMAG.2012.2197601
Perspectives of magnetic particle spectroscopy for magnetic nanoparticle characterization
Thilo Wawrzik, Meinhard Schilling, Frank Ludwig
Magnetic Particle Imaging, Springer Proceedings in Physics, Volume 140, 41–45, 2012
doi: 10.1007/978-3-642-24133-8_7
Single-core fluxgate gradiometer with simultaneous gradient and homogeneous feedback operation
Michal Janosek, Pavel Ripka, Frank Ludwig, Meinhard Schilling
J. Appl. Phys., Volume 111 (7), pp. 07E328 - 07E328-3, 2012
doi: 10.1063/1.3676238
Spatial and field resolution of wire-wound fluxgates in magnetic dipole fields
Dennis Rühmer, Piraveena Shanmuganathan, Frank Ludwig, Meinhard Schilling
Sensors & Actuators A: Physical, Volume 173, 30–35, 2012
doi: 10.1016/j.sna.2011.10.009
Synthesis of Single-Core Iron Oxide Nanoparticles as a Potential Tracer for Magnetic Particle Imaging
Aidin Lak, Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
Magnetic Particle Imaging, Springer Proceedings in Physics, Volume 140, 91–95, 2012
doi: 10.1007/978-3-642-24133-8_15
Transport properties of YBa2Cu3O7 Josephson junctions at THz frequencies
Alexander Guillaume, Jan M. Scholtyssek, Christian Brendel, Frank Ludwig, Meinhard Schilling
Physics Procedia, Volume 36, 19-24, 2012
doi: 10.1016/j.phpro.2012.06.033
2011
Fluxgate based detection of magnetic nanoparticle dynamics in a rotating magnetic field
Jan Dieckhoff, Meinhard Schilling, Frank Ludwig
Applied Physics Letters, 2011, 99, 112501-1-3, 2011
doi: 10.1063/1.3639276
HTS Josephson Junction Cantilever With Integrated Near Field THz Antenna
Christian Brendel, Jan M. Scholtyssek, Frank Ludwig, Meinhard Schilling
IEEE Trans. Appl. Supercond., Volume 21, Number 3, 319–322, 2011
doi: 10.1109/TASC.2010.2096452
Imposed layer-by-layer growth of ZnO on GaN/sapphire substrates using pulsed laser interval deposition
Alexander Hirsch, Christian Wille, Heiko Bremers, Uwe Rossow, Andreas Hangleiter, Frank Ludwig, Meinhard Schilling
Thin Solid Films, Volume 519, 7683–7685, 2011
doi: 10.1016/j.tsf.2011.05.057
2010
Characterization of Magnetic Core-Shell Nanoparticle Suspensions Using ac Susceptibility for Frequencies up to 1 MHz
Frank Ludwig
AIP Conference Proceedings Vol. 1311, 249–254, 2010
doi: 10.1063/1.3530020
Determination of core and hydrodynamic size distributions of CoFe2O4 nanoparticle suspensions using ac susceptibility measurements
Frank Ludwig, Alexander Guillaume, Meinhard Schilling, Natalia Frickel, Annette M. Schmidt
J. Appl. Phys., Volume 108, 033918-1–5, 2010
doi: 10.1063/1.3463350
Fluxgate magnetometer for temperatures up to 180°C
Patrik Sebbes, Frank Ludwig, Meinhard Schilling
J. of Electrical Engineering 61, 21–23, 2010
Homogeneous biosensor based on optival detection of the rotational dynamics of anisotropic nanoparticles
Stefan Schrittwieser, Joerg Schotter, Thomas Maier, Roman Bruck, Paul Muellner, Nadezhda Kataeva, Katerina Soulantika, Frank Ludwig, A. Huetten, and H. Brueckl
Procedia Engineering, 1107–1110, 2010
doi: 10.1016/j.proeng.2010.09.304
Influence of Synthesis Parameters on Magnetization and Size of Iron Oxide Nanoparticles
Aidin Lak, Frank Ludwig, Ilka-Maria Grabs, Georg Garnweitner, Meinhard Schilling
AIP Conference Proceedings Vol. 1311, 224–230 (2010)
doi: 10.1063/1.3530016
Magnetic particle spectroscopy for the evaluation of eld-dependent harmonics generation
T. Wawrzik, J. Hahn, F. Ludwig and M. Schilling
Magnetic Nanoparticles – Particle Science, Imaging Technology, and Clinical Applications,
Proceedings of First International Workshop on Magnetic Particle Imaging, World Scientific 2010, 86–91, 2010
doi: 10.1142/9789814324687_0012
Multivariate Magnetic Particle Spectroscopy for Magnetic Nanoparticle Characterization
Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
AIP Conference Proceedings Vol. 1311, 267–270, 2010
doi: 10.1063/1.3530024
Two-dimensional magnetic particle imaging
Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
Magnetic Nanoparticles – Particle Science, Imaging Technology, and Clinical Applications, Proceedings of First International Workshop on Magnetic Particle Imaging, World Scientific 2010, 100–105, 2010
doi: 10.1142/9789814324687_0014
2009
Assembly for One-dimensional Magnetic Particle Imaging
Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
IFMBE Proceedings, Volume 25/II, 898–900, 2009
https://link.springer.com/chapter/10.1007/978-3-642-03879-2_251
Binding assays with streptavidin-functionalized superparamagnetic nanoparticles and biotinylated analytes using fluxgate magnetorelaxometry
Erik Heim, Frank Ludwig, Meinhard Schilling
J. Magn. Magn. Mater., Volume 321, 1628–1631, 2009
doi: 10.1016/j.jmmm.2009.02.101
Characterization of magnetic core-shell nanoparticles by fluxgate magnetorelaxometry, ac susceptibility, transmission electron microscopy and photon correlation spectroscopy – a comparative study
Frank Ludwig, Erik Heim, Meinhard Schilling
J. Magn. Magn. Mater., Volume 321, 1644–1647, 2009
doi: 10.1016/j.jmmm.2009.02.105
Comparison and calibration of fluxgate and SQUID magnetorelaxometry techniques for the characterization of magnetic core-shell nanoparticles
Frank Ludwig, Erik Heim, Dietmar Eberbeck, Kay Schwarz, Lutz Trahms, Meinhard Schilling
IEEE Trans. Magn., Volume 45, Number 10, 4857–4860, 2009
doi: 10.1109/TMAG.2009.2024635
Effect of HF concentration on physical and electronic properties of electrochemically formed nano-porous silicon
P. Kumar, Peter Lemmens, M. Ghosh, Frank Ludwig, Meinhard Schilling
J. Nanomater., Volume 2009, 728957-1–7, 2009
doi: 10.1155/2009/728957
Iron/Nickel nanowire growth in anodic aluminum oxide templates: Transfer of length scales and periodicity
Hongdan Yan, Peter Lemmens, H. Dierke, S. C. White, Frank Ludwig, Meinhard Schilling
J. Phys.: Conf. Series, Volume 145, 012079-1–4, 2009
doi: 10.1088/1742-6596/145/1/012079
Magnetic relaxation imaging of magnetic nanoparticle distributions
Dennis Rühmer, Erik Heim, Thilo Wawrzik, Frank Ludwig, Meinhard Schilling
IFMBE Proceedings, Volume 25/VII, 418–420, 2009
doi: 10.1007/978-3-642-03885-3_116
Magnetic Relaxation Imaging with a Fluxgate Sensor Scanner
Dennis Rühmer, Erik Heim, Alexander Hirsch, Frank Ludwig, Rainer Piel, Felix Stewing, Meinhard Schilling
SENSOR 2009, 14th International Conference of Sensors, Technologies, Electronics and Applications, Volume 2, 29–33, 2009
doi: 10.5162/sensor09/v2/a6.3
Magnetorelaxometry of nanoparticles using a GMI magnetometer
B. Dufay, Sebastian Saez, Matthieu Denoual, Christophe Dolabdjian, Frank Ludwig, Erik Heim, Meinhard Schilling, L. Melo, David Menard, A. Yelon
Sensor Letters, Volume 7, 429–432, 2009
doi: 10.1166/sl.2009.1087
Noise optimization of racetrack fluxgate sensors
Rainer Piel, Frank Ludwig, Meinhard Schilling
Sensor Letters, Volume 7, Number 1-5, 317–321, 2009
doi: 10.1166/sl.2009.1078
Quantitative and Qualitative Characterization of Magnetic Nanoparticles by Magnetorelaxometry using a laboratory MRX-Analyzer
Erik Heim, Marianne Gerloff, Frank Ludwig, Meinhard Schilling
IFMBE Proceedings, Volume 25/VII, 650–652, 2009
doi: 10.1007/978-3-642-03885-3_180
2008
Characterization of superparamagnetic Fe3O4 nanoparticles by fluxgate magnetorelaxometry for use in biomedical applications
Frank Ludwig, Erik Heim, Meinhard Schilling, Keiji Enpuku
J. Appl. Phys., Volume 103, Number 7, 07A314-1–3, 2008
doi: 10.1063/1.2840048
Fluxgate magnetorelaxometry for characterization of hydrogel polymerization kinetics and physical entrapment capacity
Erik Heim, Steffen Harling, Frank Ludwig, Henning Menzel, Meinhard Schilling
J. Phys.: Condens. Matter, Volume 20, 2008, 204106-1–5
doi: 10.1088/0953-8984/20/20/204106
Free-carrier compensation in ferromagnetic ion-implanted
Dirk Menzel, Ali Awada, Hanno Dierke, Joachim Schoenes, Frank Ludwig, Meinhard Schilling
J. Appl. Phys., Volume 103, page 07D106 (1--3) - 2008
doi: 10.1063/1.2830796
Hydrogel characterization: Swelling versus fluxgate magnetorelaxometry
Steffen Harling, Erik Heim, Ariane Schwoerer, Frank Ludwig, Meinhard Schilling, Henning Menzel
Journal of Controlled Release, Volume 132, Number 3, e68–e69, 2008
doi: 10.1016/j.jconrel.2008.09.063
Magnetic Nanorotors with Tailored Field-induced Dynamics
Mathias Feyen, Erik Heim, Frank Ludwig, Annette M. Schmidt
Chemistry of Materials, Volume 20, 2942–2948, 2008
doi: 10.1021/cm703419t
Magnetische Nanopartikel für Anwendungen in biochemischer Analytik und medizinischer Diagnostik
Meinhard Schilling, Frank Ludwig
Proc. of VDE Kongress, München Germany, Volume ITG 1.41 - 3.-5. November 2008
https://lms.ee.hm.edu/~seck/AlleDateien/Allgemeines/VDE2008/Proceedings/ITG_1_4_1_Schilling.pdf
Proteins and patients – magnetic nanoparticles as analytic markers
Meinhard Schilling, Frank Ludwig
Advances in Solid State Physics, Volume 46, 83–93, 2008
doi: 10.1007/978-3-540-38235-5_7
2007
Characterization of superparamagnetic nanoparticles by analyzing the magnetization and relaxation dynamics using fluxgate magnetometers
Frank Ludwig, Erik Heim, Meinhard Schilling
J. Appl. Phys., Volume 101, Number 11, 113909-1–10, 2007
doi: 10.1063/1.2738416
Fluxgate magnetorelaxometry of superparamagnetic nanoparticles for hydrogel characterization
Erik Heim, Steffen Harling, Kai Pöhlig, Meinhard Schilling, Frank Ludwig, Henning Menzel
J. Magn. Magn. Mater., Volume 311, Number 1, 150–154, 2007
doi: 10.1016/j.jmmm.2006.10.1155
Liquid phase immunoassay using magnetic markers and superconducting quantum interference device
Keiji Enpuku, Tsuyoshi Tanaka, Takashi Matsuda, Hiroyuki Kuma, Feng Dang, Naoya Enomoto, Junichi Hojo, Kohji Yoshinaga, Frank Ludwig, Fatemeh Ghaffari, Erik Heim, Meinhard Schilling
Japanese Journal of Applied Physics, Volume 46, Number 11, 7524–7529, 2007
doi: 10.1143/JJAP.46.7524
Magnetic Nanoparticle Analyzer for Magnetic Nanoparticle Characterization and Binding Assays
Erik Heim, Frank Ludwig, Rainer Piel, Meinhard Schilling, Wenzhong Liu
Biomedizinische Technik, Volume 52, on CD, 2007
Properties of magnetic nanoparticles in the Brownian relaxation range for liquid phase immunoassays
Keiji Enpuku, Tsuyoshi Tanaka, Takashi Matsuda, Feng Dang, Naoya Enomoto, Junichi Hojo, Kohji Yoshinaga, Frank Ludwig, Fatemeh Ghaffari, Erik Heim, Meinhard Schilling
J. Appl. Phys., Volume 102, 054901-1–7, 2007
doi: 10.1063/1.2775882
2006
Comparison of capacitive ECG with conventional ECG
Martin Oehler, André Riggert, Frank Ludwig, Meinhard Schilling, Benjamin Blankertz, Klaus-Robert Müller, Volker Kunzmann, Gabriel Curio
Biomedizinische Technik, Volume 51, on CD, 2006
Ferromagnetism in Fe and Co-implanted SnO2 films
Joachim Schoenes, U. Pelzer, Dirk Menzel, Kerstin Franke, Frank Ludwig, Meinhard Schilling
Physica Status Solidi (c), Volume 3, 4115–4118, 2006
doi: 10.1002/pssc.200672819
Investigation of superparamagnetic Fe3O4 nanoparticles by fluxgate magnetorelaxometry for use in magnetic relaxation immunoassays
Frank Ludwig, Erik Heim, Dirk Menzel, Meinhard Schilling
J. Appl. Phys., Volume 99, Number 08, 08P106-1–3, 2006
doi: 10.1063/1.2171121
Magnetorelaxometrie magnetischer Nanoteilchen für die quantitative und spezifische Analyse von Biomolekülen
Frank Ludwig
Technisches Messen, Volume 73, Number 4, 217–222, 2006
doi: 10.1524/teme.2006.73.4.217
2005
Investigation of magnetic nanoparticles for the quantitative and specific analysis of biomolecules with magnetorelaxometry
Erik Heim, Frank Ludwig, Meinhard Schilling
Biomedizinische Technik, Volume 50, Number 1, 613–614, 2005
Magnetorelaxometrie magnetischer Nanoteilchen für die quantitative und spezifische Analyse von Biomolekülen
Frank Ludwig
XIX. Messtechnisches Symposium des AHMT e.V., 95–104, 2005
doi: 10.1524/teme.2006.73.4.217
Magnetorelaxometry of magnetic nanoparticles in magnetically unshielded environment utilizing a differential fluxgate arrangement
Frank Ludwig, Sascha Mäuslelein, Erik Heim, Meinhard Schilling
Rev. Sci. Instrum., Volume 76, 106102-1–3, 2005
doi: 10.1063/1.2069776
Magnetorelaxometry of magnetic nanoparticles with fluxgate magnetometers for the analysis of biological targets
Frank Ludwig, Erik Heim, Sascha Mäuslelein, Dietmar Eberbeck, Meinhard Schilling
J. Magn. Magn. Mater., Volume 293, 690–695, 2005
doi: 10.1016/j.jmmm.2005.02.045
2004
Analysis of biological target concentrations in solution by magnetorelaxometry
Erik Heim, Frank Ludwig, Meinhard Schilling
Biomedizinische Technik, Volume 49, 420–421, 2004
DC-SQUID Magnetometers from YBa2Cu3O7-δ for biomagnetic applications
Henry Barthelmess, Frank Ludwig, Meinhard Schilling, Dietmar Drung, Thomas Schurig
High Temperature Superconductivity 2, Springer Verlag, Berlin, 299–336, 2004
doi: 10.1007/978-3-662-07764-1_11
In-situ RHEED analysis of the epitaxial overgrowth of SrTiO3 and YBa2Cu3O7 films for multilayer devices
M. Karger, E. Heim, F. Ludwig, M. Schilling
Institute of Physics Conference Series No. 181, edited by A. Andreone, G. P. Pepe, Chistiano and G. Masullo, Institute of Physics Publishing, Bristol (UK) and Philadelphia (USA), 1556–1560, 2004
Magnetorelaxometry of magnetic nanoparticles – a new method for the quantitative and specific analysis of biomolecules
Frank Ludwig, Erik Heim, Meinhard Schilling
Proceedings of 2004 4th IEEE Conference on Nanotechnology (on CD), 245–247, 2004
doi: 10.1109/NANO.2004.1392312
Superconducting Quantum Interference Devices: State-of-the-Art and Applications
Reinhold Kleiner, Dieter Koelle, Frank Ludwig, John Clarke
in Proceedings of the IEEE, Volume 92, 1534–1548, 2004
doi: 10.1109/JPROC.2004.833655
2003
Chapter 3: SQUID Fabrication Technology
Robin Cantor, Frank Ludwig
in: SQUIDs Handbook, ed. J. Clarke and A. Braginski, Wiley-VCH (2003) pp. 93-125
Epitaxial conditions of YBa2Cu3O7-δ ramp-edge Josephson junctions
Matthias Karger, Erik Heim, Frank Ludwig, Meinhard Schilling
Proceedings of the 6th European Conference on Applied Superconductivity, 1556–1560, 2003
Hilbert transform spectroscopy using Josephson junction arrays of the high-Tc superconductor
YBa2Cu3O7-δ
Andre Kaestner, Frank Ludwig, Frank Ludwig, Meinhard Schilling
Proceedings of the 6th European Conference on Applied Superconductivity, 3067–3071, 2003
2002
High-Tc superconductor dc SQUIDs for unshielded operation and their applications
Thomas Schurig, Dietmar Drung, Sylke Bechstein, Jörn Beyer, Frank Ludwig
Physica C, Volume 378-381, 1378–1384, 2002
doi: 10.1016/S0921-4534(02)01724-0
NDE of semiconductor samples and photovoltaic devices with high spatial resolution utilizing SQUID photoscanning
Th. Schurig, J. Beyer, D. Drung, F. Ludwig, A. Lüdge, and H. Riemann
IEICE Transactions on Electronics 85, 665-669 (2002)
2001
Optimization of direct-coupled high-Tc SQUID magnetometers for operation in magnetically unshielded environment
F. Ludwig, A. B. M. Jansman, D. Drung, M. O. Lindström, S. Bechstein, J. Beyer, J. Flokstra, and Th. Schurig
IEEE Trans Appl. Supercond. 11, 1315-1318, 2001
doi: 10.1109/77.919592
THz-Spectroscopy with YBa2Cu3O7-Josephson Junctions on a LaAIO3Bicrystals
F. Ludwig, A. Kaestner, M. Volk, M. Schilling
IEEE Trans. Appl. Supercond., Volume 11, 586–588, 2001
doi: 10.1109/77.919413
2000
Portable Hoch-Tc-SQUID-Systeme für biomagnetische und geophysikalische Messungen
F. Ludwig, S. Bechstein, D. Drung, M. Scheiner, K. Wenzel, J. Beyer, Th. Schurig, T. Radic, and H. Burkhardt
Supraleitung und Tieftemperaturtechnik 2000, Hrsg. VDI-Technologiezentrum Physikalische Technologien S. 180ff.
Read-out electronics for a 9-channel high-Tc dc SQUID system
S. Bechstein, D. Drung, M. Scheiner, F. Ludwig, and Th. Schurig
Inst. Phys. Conf. Ser. No. 167, IOP Publishing Ltd. 2000 (p. 597-600)
1999
High-Performance High-Tc SQUID Sensors for Multichannel Systems in Magnetically Disturbed Environment
F. Ludwig, J. Beyer, D. Drung, S. Bechstein, and Th. Schurig
IEEE Trans Appl. Supercond. 9, 3793-3796 (1999)
doi: 10.1109/77.783853
High-transition-temperature superconducting quantum interference devices
D. Koelle, R. Kleiner, F. Ludwig, E. Dantsker, and John Clarke
Rev. Mod. Phys. 71, 631-686 (1999)
doi: 10.1103/RevModPhys.71.631
Improved direct-coupled high-Tc SQUID magnetometers for operation in magnetically unshielded environment
F. Ludwig, D. Drung, S. Bechstein, J. Beyer, and Th. Schurig
Extended Abstracts of the International Superconductive Electronics Conference (ISEC’99), Berkeley, CA,
1999, p. 563-565
Linearity of sensitive YBa2Cu3O7-x dc superconducting quantum interference device magnetometers
J. Beyer, D. Drung, F. Ludwig, and Th. Schurig
J. Appl. Phys. 86, 3382-3386 (1999)
doi: 10.1063/1.371217
Low-frequency noise of improved direct-coupled high-Tc superconducting quantum interference device magnetometers in ac and dc magnetic fields
F. Ludwig and D. Drung
Appl. Phys. Lett. 75, 2821-2823 (1999)
doi: 10.1063/1.125161
1998
Direct-coupled high-Tc dc superconducting quantum interference device magnetometers on SrTiO3 substrate:
Theoretical description and comparison with experiment
K. Enpuku, T. Minotani, A. Kandori, F. Shiraishi, J. Beyer, D. Drung, and F. Ludwig
Jpn. J. Appl. Phys. 37, 4769 (1998)
doi: 10.1143/JJAP.37.4769
Low noise YBa2Cu3O7-x single layer dc SQUID magnetometer based on bicrystal junctions with 30° misorientation angle
J. Beyer, D. Drung, F. Ludwig, T. Minotani, and K. Enpuku
Appl. Phys. Letters 72, 203-205 (1998)
doi: 10.1063/1.120685
Reliable high-Tc SQUID magnetometer systems
Th. Schurig, S. Bechstein, J. Beyer, D. Drung, F. Ludwig, and T. Radic
Proceedings of the 4th Twente HTS Workshop, Twente, 1998
YBa2Cu3O7-x dc SQUID magnetometers with bicrystal junctions for biomagnetic multichannel applications
F. Ludwig, J. Beyer, D. Drung, S. Bechstein, and Th. Schurig
Appl. Supercond. 5, 345-352 (1998)
doi: 10.1016/S0964-1807(98)00046-5
1997
Biomagnetic instruments go portable
L. Trahms, F. Ludwig, and D. Drung
Physics World, February 1997, p. 16
doi: 10.1088/2058-7058/10/2/17
YBa2Cu3O7-x dc SQUID magnetometers with bicrystal junctions for biomagnetic multichannel applications
F. Ludwig, J. Beyer, D. Drung, S. Bechstein, and Th. Schurig
Extended Abstracts of 6th International Superconductive Electronics Conference (ISEC’97), Berlin, 1997, Ed. H. Koch and S. Knappe, Vol. 3, p. 4-6
doi: 10.1016/S0964-1807(98)00046-5
1996
Current amplification with asymmetric SQUIDs at 77 K
R. Kleiner, D. Koelle, F. Ludwig, A. H. Miklich, E. Dantsker, and John Clarke
Journal of Applied Physics 79, 1129-1142 (1996)
doi: 10.1063/1.360911
Integrated YBa2Cu3O7-x magnetometer for biomagnetic measurements
D. Drung, F. Ludwig, W. Müller, U. Steinhoff, L. Trahms, H. Koch, Y. Q. Shen, M. B. Jensen, P. Vase, T. Holst, T. Freltoft, and G. Curio
Applied Physics Letters 68, 1421-1423 (1996)
doi: 10.1063/1.116100
Low noise YBa2Cu3O7-x magnetometers with additional positive feedback
D. Drung, E. Dantsker, F. Ludwig, H. Koch, R. Kleiner, J. Clarke, S. Krey, D. Reimer, B. David, and O. Dössel
Applied Physics Letters 68, 1856-1858 (1996)
doi: 10.1063/1.116036
Low temperature scanning electron microscopy study of YBa2Cu3O7-δ multilayer dc SQUID magnetometers
R. Gerber, D. Koelle, R. Gross, R. P. Huebener, F. Ludwig, E. Dantsker, R. Kleiner, and John Clarke
Applied Physics Letters 68, 1555-1557 (1996)
doi: 10.1063/1.115697
Progress in High-Tc dc SQUIDs
John Clarke, E. Dantsker, R. Kleiner, D. Koelle, A. H. Miklich, and F. Ludwig
Chinese Journal of Physics 34, 352-363 (1996)
SQUIDs for biomagnetic multichannel applications
D. Drung and F. Ludwig
Extended Abstracts of the International Workshop on Superconductivity High Temperature Superconducting
Electronics: Fundamentals and Applications, Iwate (Japan), June 24-27, 1996, p. 125-128
1995
Asymmetric YBa2Cu3O7-x dc SQUID: A three terminal device with current gain at 77K
D. Koelle, R. Kleiner, F. Ludwig, A. H. Miklich, E. Dantsker, John Clarke
Applied Physics Letters 66, 640-642 (1995)
doi: 10.1063/1.114145
Fabrication and design issues for high-Tc multilayer magnetometers
F. Ludwig, E. Dantsker, R. Kleiner, D. Koelle, John Clarke, D. Drung, S. Knappe, and H. Koch
Proceedings of the HTS Workshop on Applications and New Materials, Twente, 1995, 111-116
High-frequency magnetic microscopy using a high-Tc SQUID
R. C. Black, F. C. Wellstood, E. Dantsker, A. H. Miklich, D. Koelle, F. Ludwig, J. Clarke
IEEE Trans. Appl. Supercond. 5, 2137-2141 (1995)
doi: 10.1109/77.403005
High-Tc multilayer magnetometers with improved 1/f noise
F. Ludwig, E. Dantsker, D. Koelle, R. Kleiner, A. H. Miklich, D. T. Nemeth, John Clarke, D. Drung, S. Knappe, H. Koch
IEEE Trans. Appl. Supercond. 5, 2919-2922 (1995)
doi: 10.1109/77.403203
High-Tc SQUID magnetometers
John Clarke, F. Ludwig, E. Dantsker, R. Kleiner, and D. Koelle
Proceedings of the HTS Workshop on Applications and New Materials, Twente, 1995 S. 1-7
High-Tc SQUID magnetometers
F. Ludwig
Extended Abstracts of the International Superconductive Electronics Conference
(ISEC’95), Nagoya, 1995, p. 171-173
Imaging radio-frequency fields using a scanning SQUID microscope
R. C. Black, F. C. Wellstood, E. Dantsker, A. H. Miklich, D. Koelle, F. Ludwig, J. Clarke
Applied Physics Letters 66, 1267-1269 (1995)
doi: 10.1063/1.113258
Integrated high-Tc multiloop magnetometer
F. Ludwig, E. Dantsker, R. Kleiner, D. Koelle, John Clarke, S. Knappe, D. Drung, H. Koch, N. McAlford, T. Button
Applied Physics Letters 66, 1418-1420 (1995)
doi: 10.1063/1.113220
Low noise YBa2Cu3O7-x-SrTiO3-YBa2Cu3O7-x multilayers for superconducting magnetometers
F. Ludwig, D. Koelle, E. Dantsker, D. T. Nemeth, A. H. Miklich, John Clarke, R. E. Thomson
Applied Physics Letters 66, 373-375 (1995)
doi: 10.1063/1.114217
Addendum on: Low noise YBa2Cu3O7-x-SrTiO3-YBa2Cu3O7-x multilayers for superconducting magnetometers
E. Dantsker, F. Ludwig, R. Kleiner, John Clarke, M. Teepe, L. P. Lee, N. McN. Alford, T. Button
Applied Physics Letters 67, 725-727 (1995)
doi: 10.1063/1.115288
Microstructure defects in YBCO thin films: A TEM study to discuss their influence on device properties
G. Kästner, D. Hesse, R. Scholz, H. Koch, F. Ludwig, M. Lorenz, H. Kittel
Physica C 243, 281-293 (1995)
doi: 10.1016/0921-4534(95)00011-9
Microwave microscopy using a superconducting quantum interference device
R. C. Black, F. C. Wellstood, E. Dantsker, A. H. Miklich, D. T. Nemeth, D. Koelle, F. Ludwig, John Clarke
Applied Physics Letters 66, 99-101 (1995)
doi: 10.1063/1.114159
Multilayer magnetometers based on high-Tc SQUIDs
F. Ludwig, E. Dantsker, R. Kleiner, D. Koelle, A. H. Miklich, and John Clarke
Applied Superconductivity 3, 383-398 (1995)
doi: 10.1016/0964-1807(95)00078-X
Phase-sensitive measurements of vortex dynamics in the terahertz domain
Beth Parks, S. Spielman, J. Orenstein, D. T. Nemeth, Frank Ludwig, John Clarke, Paul Merchant, D. J. Lew
Physical Review Letters 74, 3265-3268 (1995)
doi: 10.1103/PhysRevLett.74.3265
Picovoltmeter based on high transition temperature SQUID
A. H. Miklich, D. Koelle, F. Ludwig, D. T. Nemeth, E. Dantsker, John Clarke
Applied Physics Letters 66, 230-232 (1995)
doi: 10.1063/1.113555
Process issues and components for HTS digital integrated circuit fabrication
Amit P. Marathe, Frank Ludwig, T. van Duzer, Luke Lee
IEEE Trans. Appl. Supercond. 5, 3135-3138 (1995)
doi: 10.1109/77.403256
1994
Fabrication issues in optimising YBa2Cu3O7-x flux transformers for low 1/f noise
F. Ludwig, E. Dantsker, D. T. Nemeth, D. Koelle, A. H. Miklich, John Clarke, S. Knappe, H. Koch, R. E. Thomson
Superconductor Science & Technology 7, 273-276 (1994)
doi: 10.1088/0953-2048/7/5/011
High-Tc three-axis dc magnetometer for geophysical applications
E. Dantsker, D. Koelle, A. H. Miklich, D. T. Nemeth, F. Ludwig, John Clarke, J. Longo, V. Vinetzky
Review of Scientific Instruments 65, 3809 (1994)
doi: 10.1063/1.1145169
Low-frequency excess noise in YBa2Cu3O7-x dc superconducting quantum interference devices cooled in static magnetic fields
A. H. Miklich, D. Koelle, T. J. Shaw, F. Ludwig, D. T. Nemeth, E. Dantsker, John Clarke, Neil McN. Alford, Tim W. Button, M. S. Colclough
Applied Physics Letters 64, 3494-3496 (1994)
doi: 10.1063/1.111251
Magnetic Microscopy using SQUIDs
F. C. Wellstood, R. C. Black, A. Mathai, Y. Gim, D. Song, A. Amar, E. Dantsker, A. H. Miklich, D. T. Nemeth, J. J. Kingston, D. Koelle, F. Ludwig, John Clarke
SPIE Proceedings 2160, 118-129 (1994)
doi: 10.1117/12.180995
Observation of the quasiparticle Hall effect in superconducting YBa2Cu3O7-x
S. Spielman, Beth Parks, J. Orenstein, D. T. Nemeth, Frank Ludwig, John Clarke, Paul Merchant, D. J. Lew
Physical Review Letters 73, 1537-1540 (1994)
doi: 10.1103/PhysRevLett.73.1537
1993
DC SQUID magnetometers from single layers of YBa2Cu3O7-x
D. Koelle, A. H. Miklich, F. Ludwig, D. T. Nemeth, E. Dantsker, John Clarke
Applied Physics Letters 63, 2271-2273 (1993)
doi: 10.1063/1.110526
High performance dc SQUID magnetometers with single layer YBa2Cu3O7-x flux transformers
D. Koelle, A. H. Miklich, E. Dantsker, F. Ludwig, D. T. Nemeth, John Clarke, W. Ruby, K. Char
Applied Physics Letters 63, 3630-3632 (1993)
doi: 10.1063/1.110071
Large area deposition of YBaCuO thin films by means of hollow cathode sputtering
H.-U. Müller, J.-P. Müller, F. Ludwig, G. Ehlers
Proc. of the EMRS 1992 Fall Meeting, Strasbourg (France)
Journal of Alloys and Compounds 195, 267-270 (1993)
doi: 10.1016/0925-8388(93)90736-7
1992
Cyclotron resonance of the Q2D electron gas of Hg1-xCdxTe grain boundaries
F. Ludwig, G. Nachtwei, M. Watts, N. J. Bassom, H.-U. Müller, W. Kraak, P. Gille, R. J. Nicholas
Semiconductor Science & Technology 4, 511-515 (1992)
doi: 10.1088/0268-1242/7/4/012
Effect of sample geometry of ceramic high-Tc superconductors on the critical state and intergranular critical current densities
F. Ludwig, M. Forsthuber, G. Hilscher, G. Ehlers
Superconductor Science & Technology 5, 196-199 (1992)
doi: 10.1088/0953-2048/5/1S/042
Herstellung grossflächiger YBaCuO Dünnschichten mittels Hohlkathodensputterns
H.-U. Müller, F. Ludwig, J.-P. Müller
Tagungsband des VDI-Statusseminars Supraleitung und Tieftemperaturtechnik,
Potsdam, 21.-23.9.92
On the determination of intrinsic properties of ceramic high-Tc superconductors by ac susceptibility measurements
F. Ludwig
Materials Research Society, Symposium Proceedings Series, Vol. 275 (1992)
1991
Hollow cathode discharge sputtering device for uniform large area thin film deposition
H. Koch, L. J. Friedrich, V. Hinkel, F. Ludwig, B. Politt, T. Schurig
J. Vac. Sci. Technol. A 9, 2374-2377 (1991)
doi: 10.1116/1.577279
Preparation of YBCO thin films by means of a hollow cathode discharge sputtering device
F. Ludwig, V. Hinkel, T. Schurig, J.-P. Müller, U. Stösslein, H.-U. Müller, H. Koch
Physica C 180, 85-89 (1991)
doi: 10.1016/0921-4534(91)90642-C
Sample size dependence of the AC susceptibility and critical current densities of ceramic high-Tc superconductors
M. Forsthuber, F. Ludwig, G. Hilscher
Proc. of the ICMAS-91, Paris (1991) 251 - 255
Size dependence of the ac susceptibilty and critical current densities of high-Tc superconductors
M. Forsthuber, F. Ludwig, G. Hilscher
Physica C 177, 401-414 (1991)
doi: 10.1016/0921-4534(91)90497-M
Sputtering with moving substrates for large-area HTSC deposition
H.-U. Müller, J.-P. Müller, F. Ludwig, U. Stösslein, T. Schurig, V. Hinkel, S. Knappe, H. Koch
Proc. IV. Soviet-German Seminar on High-Temperature Superconductivity, 8.-13.10.91, St. Petersburg
1990
Size dependence of the ac susceptibility and critical current densities of YBa2Cu3O7-xsuperconductors
M. Forsthuber, F. Ludwig, G. Hilscher
Electronic Properties of High-Tc Superconductors, Proc. Internat. Conference, Kirchberg/
Tirol 1990, Springer Series in Solid State Sciences 99, 69-74 (1990)
1989
Cyclotron resonance and impurity levels in tellurium in submillimeter range under hydrostatic pressure
S. G. Lyapin, M. I. Eremets, A. M. Shirokov, E. A. Vinogradov, S. V. Demishev, Yu. V. Kosichkin, R. Herrmann, H.-U. Müller, F. Ludwig
High Pressure Science and Technology, Vol. 3, Proc. XI. AIRAPT Internat. Conference,
Kiev, Naukova Dumka, 1989 (p.124-127)
Shallow acceptor states in tellurium in high magnetic fields under hydrostatic pressure
S. G. Lyapin, M. I. Eremets, A. M. Shirokov, R. Herrmann, H.-U. Müller, F. Ludwig
Semiconductor Science & Technology 4, 271-272 (1989)
doi: 10.1088/0268-1242/4/4/026
1988
Cyclotron resonance in the n-inversion layer of InSb grain boundaries
H.-U. Müller, F. Ludwig, R. Herrmann
Solid State Commun. 65, 761-763 (1988)
doi: 10.1016/0038-1098(88)90381-X
Effective scattering times of inversion electrons in InSb grain boundaries deduced from cyclotron resonance measurements
F. Ludwig, H.-U. Müller, R. Herrmann
phys. stat. sol. (b) 150, 119-123 (1988)
doi: 10.1002/pssb.2221500115
Magneto-optical investigations on p-InSb bicrystals in the submillimeter wavelength range
F. Ludwig, H.-U. Müller, R. Herrmann
phys. stat. sol. (b) 148, 143-153 (1988)
doi: 10.1002/pssb.2221480112
Submillimeter magnetospectroscopy of tellurium under hydrostatic pressure
S. G. Lyapin, M. I. Eremets, A. M. Shirokov, R. Herrmann, H.-U. Müller, F. Ludwig
phys. stat. sol. (b) 147, 297-306 (1988)
doi: 10.1002/pssb.2221470134
1987
Cyclotron resonance in the n-inversion layer of InSb grain boundaries
H.-U. Müller, F. Ludwig, R. Herrmann
phys. stat. sol. (b) 142, K69-K71 (1987)
doi: 10.1002/pssb.2221420146
Preparation and properties of high-Tc superconducting Y-Ba-Cu-O systems
R. Herrmann, N. Kubicki, Th. Schurig, H. Dwelk, U. Preppernau, A. Krapf, H. Krüger, H.-U. Müller, L. Rothkirch, W. Kraak, W. Braune, N. Pruss, G. Nachtwei, F. Ludwig, E. Kemnitz
phys. stat. sol. (b) 142, K53-K56 (1987)
doi: 10.1002/pssb.2221420143
1985
Magneto-optical investigations in the submillimeter wavelength range on p-InSb bicrystals
B. Mengel, H.-U. Müller, F. Ludwig, V. L. Konstantinov, R. Herrmann
phys. stat. sol. (b) 131, K145-K148 (1985)
doi: 10.1002/pssb.2221310250
Magneto-optical investigations on n-InSb in the far-infrared
F. Ludwig, H.-U. Müller, B. Mengel, R. Herrmann
phys. stat. sol. (b) 131, K149-K152 (1985)
doi: 10.1002/pssb.2221310251
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