Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Gesa Welker"'
Publikováno v:
New Journal of Physics, Vol 26, Iss 10, p 103031 (2024)
Fiber-coupled sensors are well suited for sensing and microscopy in hard-to-reach environments such as biological or cryogenic systems. We demonstrate fiber-based magnetic imaging based on nitrogen-vacancy (NV) sensor spins at the tip of a fiber-coup
Externí odkaz:
https://doaj.org/article/e55f5cb5d2c34ac9a0940b57e08ed427
Autor:
Gesa Welker, Martin de Wit, Oosterkamp, Tjerk H., Mydosh, John A., Andreas Suter, Thomas Prokscha, Lucia Bossoni
Publikováno v:
arXiv, 2022:2209.02002. Cornell University Library
Pure TUe
Pure TUe
We performed depth-dependent low-energy muon spin spectroscopy ($\mu$SR) studies on three palladium 100 nm thin films, both undoped and doped with 170 ppm of iron. Muons implanted in the surface and substrate interface region probe an increased local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48e9149768e2dbcdff534be93cec039a
https://research.tue.nl/nl/publications/9ce08474-52e5-494a-be1d-a6168911e930
https://research.tue.nl/nl/publications/9ce08474-52e5-494a-be1d-a6168911e930
Publikováno v:
Cryogenics
Cryogenics, 98, 67-70
Cryogenics, 98, 67-70
One of the major challenges in performing SQUID-detected Magnetic Resonance Force Microscopy (MRFM) at milliKelvin temperatures is the crosstalk between the radiofrequency (RF) pulses used for the spin manipulation and the SQUID-based detection mecha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5ccafaf7ccfe55dba1f03a12b350b46
https://doi.org/10.1016/j.cryogenics.2019.01.001
https://doi.org/10.1016/j.cryogenics.2019.01.001
Autor:
F. M. Buters, Dirk Bouwmeester, Harmen van der Meer, Gert Koning, Kier Heeck, Martin de Wit, H. J. Eerkens, Gesa Welker, Tjerk H. Oosterkamp
Publikováno v:
Review of Scientific Instruments, 90, 015112
We present the design and implementation of a mechanical low-pass filter vibration isolation used to reduce the vibrational noise in a cryogen-free dilution refrigerator operated at 10 mK, intended for scanning probe techniques. We discuss the design
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fee096908ae83f42929a5928e1405fd
https://hdl.handle.net/1887/69913
https://hdl.handle.net/1887/69913
Publikováno v:
Journal of Applied Physics, 125(8), 083901
We report on Magnetic Resonance Force Microscopy measurements of the Boltzmann polarization of the nuclear spins in copper by detecting the frequency shift of a soft cantilever. We use the time-dependent solution of the Bloch equations to derive a co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b884661dc753a4572966c77f2ab85c6
https://hdl.handle.net/1887/69881
https://hdl.handle.net/1887/69881
Publikováno v:
Physical Review Applied, 10(6), 064045
Physical Review Applied
Physical Review Applied
We report on surface and bulk spin density measurements of diamond, using ultra-sensitive magnetic force microscopy with magnetic field gradients up to 0.5 T/$\mu$m. At temperatures between 25 and 800 mK, we measure the shifts in the resonance freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f017d3db3a95d835207f38b7b2e98ea4
http://hdl.handle.net/1887/70563
http://hdl.handle.net/1887/70563
We study the temperature dependent magnetization properties of (010)-oriented Ni-Mn-Ga epitaxial films on MgO(001) substrates. In the martensitic phase, we observe pronounced abrupt slope changes in the magnetization loops for all studied samples. Ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::092296bae211122d75de6f4de58ca974
Autor:
André Vantomme, Martijn J. R. Heck, Jared F. Bauters, Dapeng Ding, John E. Bowers, L. M. C. Pereira, Dirk Bouwmeester, Michiel J. A. de Dood, Gesa Welker
A silicon nitride ring resonator with implanted ytterbium ions offers a means for greatly enhanced ion–light interactions in an integrated optics platform. Rare-earth ions in solids are of particular interest for quantum information storage and pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::80b999cfa6b124624b83afc0e18842cd
https://lirias.kuleuven.be/handle/123456789/546203
https://lirias.kuleuven.be/handle/123456789/546203
Autor:
F. M. Buters, Dirk Bouwmeester, H. J. Eerkens, B. Perock, Gesa Welker, S. de Man, Brian Pepper, Kier Heeck, Matthew Weaver, Fernando Luna
Publikováno v:
Applied Physics Letters, 108(3), 033501
Applied Physics Letters
Applied Physics Letters
Two major challenges in the development of optomechanical devices are achieving a low mechanical and optical loss rate and vibration isolation from the environment. We address both issues by fabricating trampoline resonators made from low pressure ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed40ad091b4c5da108874e19c0690e4d
https://hdl.handle.net/1887/46541
https://hdl.handle.net/1887/46541
Autor:
Matthew Weaver, Brian Pepper, Kier Heeck, S. de Man, F. M. Buters, Dirk Bouwmeester, Petro Sonin, H. J. Eerkens, Gesa Welker
For experimental investigations of macroscopic quantum superpositions and the possible role of gravitational effects on the reduction of the corresponding quantum wave function it is beneficial to consider large mass, low frequency optomechanical sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1eb110d97b366a874db1cf25affe599e
http://hdl.handle.net/1887/3196714
http://hdl.handle.net/1887/3196714