Results 21 to 30 of about 572,572 (292)

A multi-color fast-switching microfluidic droplet dye laser [PDF]

, 2009
We describe a multi-color microfluidic dye laser operating in whispering gallery mode based on a train of alternating droplets containing solutions of different dyes; this laser is capable of switching the wavelength of its emission between 580 nm and ...
Abate, Adam R., Agresti, Jeremy J., Li, Zhenyu, Psaltis, Demetri, Tang, Sindy K. Y., Weitz, David A., Whitesides, George M.   +6 more
core   +1 more source

DFT-Based Design and Characterization of Organic Chromophores Based on Symmetric Thio-Bridge Quinoxaline Push–Pull (STQ-PP) for Solar Cells

Molecules
Organic solar cells require molecular materials with broad absorption and proper energy-level alignment to maximize photon harvesting and charge transport; in this context, this work focuses on the computational design and characterization of π ...
Edwin Rivera, Alex Garavis, Juan Garcia, Oriana Avila, Ruben Fonseca   +4 more
doaj   +1 more source

Optical reconfiguration and polarization control in semi-continuous gold films close to the percolation threshold [PDF]

, 2017
Controlling and confining light by exciting plasmons in resonant metallic nanostructures is an essential aspect of many new emerging optical technologies.
Beermann, Jonas, Bozhevolnyi, Sergey I., Frydendahl, Christian, Geisler, Mathias, Lavrinenko, Andrei, Mortensen, N. Asger, Novikov, Sergey M., Repän, Taavi, Stenger, Nicolas, Xiao, Sanshui   +9 more
core   +5 more sources

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Lifetime Measurement of Cesium Atoms Using a Cold Rydberg Gas

Applied Sciences, 2022
The lifetimes of nS1/2 and nD5/2 (n = 60–83) cesium Rydberg states are measured accurately in a magneto-optical trap using the field ionization technique and analyzed with the existing theoretical model. The room temperature blackbody radiation (BBR) and
Rong Song, Jingxu Bai, Yuechun Jiao, Jianming Zhao, Suotang Jia   +4 more
doaj   +1 more source

The proton radius puzzle

, 2017
High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-proton scattering and hydrogen spectroscopy. The status of this discrepancy,
Ahmed, M. Abdou, Amaro, F. D., Amaro, P., Antognini, A., Bigot, E. -O. Le, Biraben, F., Cardoso, J. M. R., Carvalho, M. L., Covita, D. S., Dax, A., Dhawan, S., Diepold, M., Fernandes, L. M. P., Franke, B., Galtier, S., Giesen, A., Gouvea, A. L., Graf, T., Guerra, M., Götzfried, J., Haack, J., Hildebrandt, M., Hänsch, T. W., Indelicato, P., Julien, L., Kirch, K., Knecht, A., Knowles, P., Kottmann, F., Krauth, J. J., Liu, Y. -W., Lopes, J. A. M., Ludhova, L., Machado, J., Monteiro, C. M. B., Mulhauser, F., Nebel, T., Nez, F., Pohl, R., Rabinowitz, P., Rapisarda, E., Santos, J. M. F. dos, Santos, J. P., Schaller, L. A., Schuhmann, K., Schwob, C., Szabo, C. I., Taqqu, D., Veloso, J. F. C. A., Voss, A., Weichelt, B., Willig, M.   +51 more
core   +1 more source

Ultrafast electrooptic dual-comb interferometry [PDF]

, 2015
The femtosecond laser frequency comb has enabled the 21st century revolution in optical synthesis and metrology. A particularly compelling technique that relies on the broadband coherence of two laser frequency combs is dual-comb interferometry.
Duran, Vicente, Tainta, Santiago, Torres-Company, Victor   +2 more
core   +2 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Spectrally encoded parallel LiDAR driven by super-bunching light

Nature Communications
Parallel light detection and ranging (LiDAR) is widely adopted for its low computational burden and rapid three-dimensional (3D) reconstruction. Yet, it remains constrained by inter-channel crosstalk and limited long-distance performance.
Xuedong Zhang, Xinghui Liu, Xiangdong Li, Yuanyuan Li, Yunrui Song, Aoni Wei, Kaige Hu, Wenxue Zhang, Zhichun Yang, Jianyong Hu, Ruiyun Chen, Guofeng Zhang, Jie Ma, Liantuan Xiao, Suotang Jia, Chengbing Qin   +15 more
doaj   +1 more source

Impact of Humidity on Quartz-Enhanced Photoacoustic Spectroscopy Based CO Detection Using a Near-IR Telecommunication Diode Laser

Sensors, 2016
A near-IR CO trace gas sensor based on quartz-enhanced photoacoustic spectroscopy (QEPAS) is evaluated using humidified nitrogen samples. Relaxation processes in the CO-N2-H2O system are investigated.
Xukun Yin, Lei Dong, Huadan Zheng, Xiaoli Liu, Hongpeng Wu, Yanfang Yang, Weiguang Ma, Lei Zhang, Wangbao Yin, Liantuan Xiao, Suotang Jia   +10 more
doaj   +1 more source