Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Frank Kühnemann"'
Autor:
Julius Metzdorf, Patrick Corhan, David Bach, Sakyo Hirose, Dirk Lellinger, Stefan Mönch, Frank Kühnemann, Olaf Schäfer-Welsen, Kilian Bartholomé
Publikováno v:
Communications Engineering, Vol 3, Iss 1, Pp 1-6 (2024)
Abstract Electrocalorics (EC) is potentially more efficient than refrigeration and heat pumps based on compressors and does not need detrimental fluids. Current EC-prototypes use solid-state contact or forced convection with liquids to transfer the h
Externí odkaz:
https://doaj.org/article/8a74283ccca74417a68ac97ad54650ab
Autor:
Jan Schipper, Stefan Melchin, Julius Metzdorf, David Bach, Miriam Fehrenbach, Konrad Löwe, Hugo Vieyra, Frank Kühnemann, Jürgen Wöllenstein, Kilian Bartholomé
Publikováno v:
JPhys Energy, Vol 6, Iss 3, p 035006 (2024)
Hysteresis and the associated production of dissipative heat during first order phase transitions are often major contributors to thermodynamic losses in caloric heat pumps. The figure of merit (FOM), defined as the ratio of adiabatic temperature cha
Externí odkaz:
https://doaj.org/article/7fc8bce1a0b642c9a263ce59fdf09bcd
Publikováno v:
APL Photonics, Vol 8, Iss 5, Pp 051301-051301-5 (2023)
Recent years have seen the development of quantum sensing concepts utilizing nonlinear interferometers based on correlated photon pairs generated by spontaneous parametric down-conversion (SPDC). Using SPDC far from frequency degeneracy allows a “d
Externí odkaz:
https://doaj.org/article/985f0444cf864432b6e7fe5af97939fe
Publikováno v:
Applied Sciences, Vol 12, Iss 3, p 1275 (2022)
We present a noninvasive procedure that measures the flow velocity of a fluid by using polarized hydrogen nuclei in the fluid. The measurement procedure is based on a time-of-flight method where magnetic information is applied on the fluid with a per
Externí odkaz:
https://doaj.org/article/c14faf9c92264cfaaed687fd63e0148f
Publikováno v:
Sensors, Vol 21, Iss 19, p 6442 (2021)
Infrared attenuated total reflection (ATR) spectroscopy is a common laboratory technique for the analysis of highly absorbing liquids or solid samples. However, ATR spectroscopy is rarely found in industrial processes, where inline measurement, conti
Externí odkaz:
https://doaj.org/article/4d2fad67c91845f7bc7c079ea5b38f41
Publikováno v:
Quantum Sensing, Imaging, and Precision Metrology.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb61c6193bf1d1bb9ffd1f5f2eedda76
https://doi.org/10.1117/12.2650157
https://doi.org/10.1117/12.2650157
Autor:
Stephan Busch, Peter A. Koss, Clemens Horch, Konstantin Schäfer, Martin Schimmerohn, Frank Schäfer, Frank Kühnemann
The advancement in miniature satellite technology and its increasing usage in scientific and commercial applications presents new and unique challenges, particularly for pointing requirements. These small platforms, often limited in resources, are pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f9a8c68b6e4486222cbf9f80d862e9e
https://publica.fraunhofer.de/handle/publica/442236
https://publica.fraunhofer.de/handle/publica/442236
We present dispersive Fourier-transform spectroscopy with undetected photons using a nonlinear interferometer based on spontaneous parametric down-conversion. The interferometer transfers mid-infrared information of sample interaction to the near-inf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c30be465cf48ba6b217856c5ca7d987
https://publica.fraunhofer.de/handle/publica/415239
https://publica.fraunhofer.de/handle/publica/415239
Publikováno v:
Sensors (Basel, Switzerland)
Sensors
Volume 21
Issue 19
Sensors, Vol 21, Iss 6442, p 6442 (2021)
Sensors
Volume 21
Issue 19
Sensors, Vol 21, Iss 6442, p 6442 (2021)
Infrared attenuated total reflection (ATR) spectroscopy is a common laboratory technique for the analysis of highly absorbing liquids or solid samples. However, ATR spectroscopy is rarely found in industrial processes, where inline measurement, conti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee725aaa1011a3caaa2d19f0ce86dea4
http://europepmc.org/articles/PMC8512763
http://europepmc.org/articles/PMC8512763