Zobrazeno 1 - 10
of 1 138
pro vyhledávání: '"Koos, C"'
Autor:
Iivanainen, Joonas, Mäkinen, Antti J., Zetter, Rasmus, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Parkkonen, Lauri
Thermal motion of charge carriers in a conducting object causes magnetic field noise that interferes with sensitive measurements nearby the conductor. In this paper, we describe a method to compute the spectral properties of the thermal magnetic nois
Externí odkaz:
http://arxiv.org/abs/2007.08963
Autor:
Mäkinen, Antti J., Zetter, Rasmus, Iivanainen, Joonas, Zevenhoven, Koos C. J., Parkkonen, Lauri, Ilmoniemi, Risto J.
Publikováno v:
Journal of Applied Physics 128, 063906 (2020)
Surface currents provide a general way to model static magnetic fields in source-free volumes. To facilitate the use of surface currents in magneto-quasistatic problems, we have implemented a set of computational tools in a Python package named bfiel
Externí odkaz:
http://arxiv.org/abs/2005.10060
Autor:
Zetter, Rasmus, Mäkinen, Antti J., Iivanainen, Joonas, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Parkkonen, Lauri
We present a novel open-source Python software package, bfieldtools, for magneto-quasistatic calculations with current densities on surfaces of arbitrary shape. The core functionality of the software relies on a stream-function representation of surf
Externí odkaz:
http://arxiv.org/abs/2005.10056
Kerr frequency comb generation relies on dedicated waveguide platforms that are optimized towards ultralow loss while offering comparatively limited functionality restricted to passive building blocks. In contrast to that, the silicon-photonic platfo
Externí odkaz:
http://arxiv.org/abs/2004.00485
Autor:
Hömmen, Peter, Mäkinen, Antti J., Hunold, Alexander, Machts, René, Haueisen, Jens, Zevenhoven, Koos C. J., Ilmoniemi, Risto J., Körber, Rainer
Magnetic fields associated with currents flowing in tissue can be measured non-invasively by means of zero-field-encoded ultra-low-field magnetic resonance imaging (ULF MRI) enabling current density imaging (CDI) and possibly conductivity mapping of
Externí odkaz:
http://arxiv.org/abs/2001.07178
Publikováno v:
IEEE Transactions on Medical Imaging, vol. 38 no. 6, pp. 1317-1327, 2019
With a hybrid MEG--MRI device that uses the same sensors for both modalities, the co-registration of MRI and MEG data can be replaced by an automatic calibration step. Based on the highly accurate signal model of ultra-low-field (ULF) MRI, we introdu
Externí odkaz:
http://arxiv.org/abs/1903.06436
Publikováno v:
Biomedical Physics & Engineering Express 6:015016 (2020)
Superconducting QUantum-Interference Devices (SQUIDs) make magnetic resonance imaging (MRI) possible in ultra-low microtesla-range magnetic fields. In this work, we investigate the design parameters affecting the signal and noise performance of SQUID
Externí odkaz:
http://arxiv.org/abs/1805.08867
Autor:
Dietrich, P. -I., Blaicher, M., Reuter, I., Billah, M., Hoose, T., Hofmann, A., Caer, C., Dangel, R., Offrein, B., Troppenz, U., Freude, W., Koos, C.
Hybrid photonic integration exploits complementary strengths of different material platforms, thereby offering superior performance and design flexibility in comparison to monolithic approaches. This applies in particular to multi-chip concepts, wher
Externí odkaz:
http://arxiv.org/abs/1802.00051
Autor:
Trocha, P., Karpov, M., Ganin, D., Pfeiffer, M. H. P., Kordts, A., Wolf, S., Krockenberger, J., Marin-Palomo, P., Weimann, C., Randel, S., Freude, W., Kippenberg, T. J., Koos, C.
Publikováno v:
Science, 2018 Feb . 359(6378), 887-891.
Externí odkaz:
https://www.jstor.org/stable/26401537
Autor:
Peter Hömmen, Antti J. Mäkinen, Alexander Hunold, René Machts, Jens Haueisen, Koos C. J. Zevenhoven, Risto J. Ilmoniemi, Rainer Körber
Publikováno v:
Frontiers in Physics, Vol 8 (2020)
Magnetic fields associated with currents flowing in tissue can be measured non-invasively by means of zero-field-encoded ultra-low-field magnetic resonance imaging (ULF MRI) enabling current-density imaging (CDI) and possibly conductivity mapping of
Externí odkaz:
https://doaj.org/article/f4cb61c9620f4feabd2c87a6ea529ca9