Results 41 to 50 of about 329,493 (296)

Ultra‐High Sensitivity, Wide‐Range Thermometry Based on High‐Quality Microscale Diamond Resonators

Advanced Materials, EarlyView.
By combing high‐crystal quality single‐crystal diamond MEMS cantilevers with multi‐mode resonance, the groundbreaking microscale ultra‐high sensitivity ≈22 nK Hz−1/2 and resolution of 100 µK thermometry is achieved. The diamond MEMS thermometry can operate over a wide temperature range from 6.5 to 380 K. This work underscores diamond MEMS resonators as
Wen Zhao, Guo Chen, Tokuyuki Teraji, Yasuo Koide, Masaya Toda, Meiyong Liao   +5 more
wiley   +1 more source

High Aspect Ratio, Superconducting Vacuum Gap Capacitor NEMS with Plate Distances Down to 32 nm

Advanced Materials Technologies, EarlyView.
Fabrication of aluminium vacuum gap capacitor based NEMS is investigated with a free to move top electrode. To avoid collapse of the top electrode vertical stress gradient is controlled through sputter parameters. The result is wafer‐level high‐yield fabrication of vacuum gap capacitors with radii between 7 µm and 30 µm and integrated piezoactuators. A
Ioan Ignat, Daniel Platz, Ulrich Schmid
wiley   +1 more source

Importance of the Doppler Effect to the Determination of the Deuteron Binding Energy [PDF]

, 1999
The deuteron binding energy extracted from the reaction ${}^1H(n,\gamma){}^2H$ is reviewed with the exact relativistic formula, where the initial kinetic energy and the Doppler effect are taken into account.
C. Van der Leun, E. G. Kessler, Jr., G. L. Greene, Il-Tong Cheon, J. Adam, L. Montanet, Michael V. Gorshkov, Myung Ki Cheoun, R. C. Greenwood, R. C. Greenwood, Ts. Vylov, Ts. Vylov, Ts. Vylov, Yongkyu Ko   +13 more
core   +2 more sources

On the Doppler Effect in a Medium

, 1963
This research was supported by the U. S. Air Force through the Air Force Office of Scientific Research of the Air Research and Development Command, under Contract No. AF49(638)-1266. Reproduction in whole or in part is permitted for any purpose of the United States Government. The author is grateful to Professor C. H. Papas for his continued guidance
openaire   +3 more sources

Flow Analysis in Pathological Microvascular Models by Ultrasound Localization Microscopy

Advanced Materials Technologies, EarlyView.
This study presents a new platform combining ultrasound localization microscopy with biomimetic gelatin phantoms to analyze flow dynamics in small vessels with narrowing or obstructions. Using microbubble tracking, the method enables high‐resolution velocity mapping in 100–500 µm channels, revealing flow changes in pathological microvascular conditions
Yarin Gershman, Grigori Shapiro, Tamar Mano, Tali Ilovitsh   +3 more
wiley   +1 more source

Optical Chaos Generation and Applications

Advanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen, Xiaoxin Mao, Junli Wang, Rong Zhang, Longsheng Wang, Zhiwei Jia, Pu Li, Anbang Wang, Yuncai Wang   +8 more
wiley   +1 more source

Reverse Doppler effect in backward spin waves scattered on acoustic waves

, 2009
We report on the observation of reverse Doppler effect in backward spin waves reflected off of surface acoustic waves. The spin waves are excited in a yttrium iron garnet (YIG) film. Simultaneously, acoustic waves are also generated.
A. A. Serga, A. Jander, A. V. Chumak, B. Hillebrands, C. Doppler, C. H. Papas, D. D. Stancil, P. Dhagat, S. Hanna, V. E. Pafomov, V. G. Veselago, V. G. Veselago, Yu. V. Gulyaev   +12 more
core   +1 more source

The Doppler Effect

Ethnologia Europaea, 2005
At the last page of the first book Laura Ingalls Wilder wrote on her childhood Little house in the big woods she is lying in bed, while her father plays “Shall Auld Acquaintance be Forgot” on his violin. When the fiddle had stopped singing Laura called out softly, ‘What are days of auld lang syne, Pa?’‘They are the days of a long time ago, Laura’ Pa ...
openaire   +2 more sources

Integration of Soft‐Robotics and Deep Learning to Assess the Coordinated Biosonar Emission and Reception Dynamics in Hipposiderid Bats

Advanced Robotics Research, EarlyView.
Combining a biomimetic soft‐robot with deep‐learning data analytics sheds light on a unique peripheral dynamics seen in the biosonar system of bats: Bats modulate their ultrasonic biosonar signals upon emission as well as reception with variable, yet highly coordinated motion patterns of their noseleaves and pinnae.
Shuxin Zhang, Ruihao Wang, Xiaoyan Yin, Luhui Yang, Rolf Müller   +4 more
wiley   +1 more source

Why are some BL Lacs detected by \fermi, but others not ?

, 2014
By cross-correlating an archival sample of 170 BL Lacs with 2 year \fermilat AGN sample, we have compiled a sample of 100 BL Lacs with \fermi detection (FBLs), and a sample of 70 non-\fermi BL Lacs (NFBLs).
Chen, Liang, Gu, Minfeng, Jiang, D. R., Wu, Zhongzu   +3 more
core   +1 more source