Zobrazeno 1 - 10
of 229
pro vyhledávání: '"Martin Wortmann"'
Publikováno v:
AIP Advances, Vol 14, Iss 7, Pp 070703-070703-12 (2024)
The exchange bias (EB) is a unidirectional magnetic anisotropy that is found in structures containing exchange-coupled ferromagnetic/antiferromagnetic interfaces. The EB usually manifests as a horizontal shift of the hysteresis after cooling the syst
Externí odkaz:
https://doaj.org/article/1d4c82104d8145e1be65ffad83bdd00c
Autor:
Nonsikelelo Sheron Mpofu, Yusuf Topuz, Elzbieta Stepula, Uwe Güth, Timo Grothe, Jan Lukas Storck, Martin Wortmann, Boris Mahltig, Andrea Ehrmann
Publikováno v:
Fibers, Vol 12, Iss 11, p 97 (2024)
Nanofiber mats with a high surface-to-volume ratio can be prepared by electrospinning. The Porosity is sometimes reported to be tunable by blending different materials, e.g., water-soluble poly(ethylene oxide) (PEO) with not water-soluble poly(acrylo
Externí odkaz:
https://doaj.org/article/451045932a17479a8a1aaec45a89398d
Autor:
Martin Wortmann, Tapas Samanta, Maik Gaerner, Michael Westphal, Johannes Fiedler, Inga Ennen, Andreas Hütten, Tomasz Blachowicz, Luana Caron, Andrea Ehrmann
Publikováno v:
APL Materials, Vol 11, Iss 12, Pp 121118-121118-7 (2023)
Exchange bias (EB) is a unidirectional anisotropy caused by interface coupling between a ferromagnet and an antiferromagnet. It causes a preferential direction of magnetization in the ferromagnet, which manifests as a shift of the hysteresis loop alo
Externí odkaz:
https://doaj.org/article/216405dcd391439f9a85a26df2ae549f
Publikováno v:
Nanomaterials, Vol 13, Iss 17, p 2418 (2023)
Exchange bias (EB) is a unidirectional anisotropy occurring in exchange-coupled ferromagnetic/antiferromagnetic systems, such as thin films, core–shell particles, or nanostructures. In addition to a horizontal shift of the hysteresis loop, defining
Externí odkaz:
https://doaj.org/article/97a8a0e24fcc4feda394f798059eb501
Autor:
Natalie Frese, Patrick Schmerer, Martin Wortmann, Matthias Schürmann, Matthias König, Michael Westphal, Friedemann Weber, Holger Sudhoff, Armin Gölzhäuser
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 12, Iss 1, Pp 172-179 (2021)
Helium ion microscopy (HIM) offers the opportunity to obtain direct views of biological samples such as cellular structures, virus particles, and microbial interactions. Imaging with the HIM combines sub-nanometer resolution, large depth of field, an
Externí odkaz:
https://doaj.org/article/cbee723c30b247c48536f9d7fdda7bfb
Publikováno v:
ACS Omega, Vol 6, Iss 7, Pp 4687-4695 (2021)
Externí odkaz:
https://doaj.org/article/3b74bd6e41e74c519b42c5e90e7e38ab
Autor:
René Riedel, Natalie Frese, Fang Yang, Martin Wortmann, Raphael Dalpke, Daniel Rhinow, Norbert Hampp, Armin Gölzhäuser
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 12, Iss 1, Pp 93-101 (2021)
A freestanding ultrathin hybrid membrane was synthesized comprising two functional layers, that is, first, a carbon nanomembrane (CNM) produced by electron irradiation-induced cross-linking of a self-assembled monolayer (SAM) of 4′-nitro-1,1′-bip
Externí odkaz:
https://doaj.org/article/985382d04d5b4855be38b17915aeb4d0
Autor:
Lena Unger, Marvin Scheideler, Pia Meyer, Julia Harland, Andreas Gorzen, Martin Wortmann, Axel Dreyer, Andrea Ehrmann
Publikováno v:
Tekstilec, Vol 61, Iss 4, Pp 265-271 (2018)
3D printing is a technology which has recently found its way into the fi eld of textile fabrics, from fashion design to technical textiles. By combining both technologies with their advantages, new composites with novel physical properties can be cre
Externí odkaz:
https://doaj.org/article/e2c70bdf8bff48b2aaa5389608c584a6
Autor:
Ehsan Asghari, Annika Kiel, Bernhard Peter Kaltschmidt, Martin Wortmann, Nadine Schmidt, Bruno Hüsgen, Andreas Hütten, Cornelius Knabbe, Christian Kaltschmidt, Barbara Kaltschmidt
Publikováno v:
Microorganisms, Vol 9, Iss 5, p 992 (2021)
New ecological trends and changes in consumer behavior are known to favor biofilm formation in household appliances, increasing the need for new antimicrobial materials and surfaces. Their development requires laboratory-cultivated biofilms, or biofi
Externí odkaz:
https://doaj.org/article/6181d0a762fc4548a6f268d4bfcc59fb
Autor:
Jan Lukas Storck, Timo Grothe, Khorolsuren Tuvshinbayar, Elise Diestelhorst, Daria Wehlage, Bennet Brockhagen, Martin Wortmann, Natalie Frese, Andrea Ehrmann
Publikováno v:
Fibers, Vol 8, Iss 9, p 55 (2020)
Polyacrylonitrile (PAN) nanofibers, prepared by electrospinning, are often used as a precursor for carbon nanofibers. The thermal carbonization process necessitates a preceding oxidative stabilization, which is usually performed thermally, i.e., by c
Externí odkaz:
https://doaj.org/article/758585c7d4114ebab8920edcb7e985dc