Results 51 to 60 of about 52,471 (290)

Shaped ultrafast laser pulses in the deep ultraviolet

Optics Express, 2007
We use an acousto-optic pulse shaper to directly control the phase and amplitude of femtosecond laser pulses in the deep ultraviolet (~ 260 nm). The efficiency of the pulse shaper is 21% and the output pulse energy is 2.8muJ. We are currently using these pulses in molecular coherent control experiments.
Brett J, Pearson, Thomas C, Weinacht
openaire   +2 more sources

Deep ultraviolet resonant Raman imaging of a cell [PDF]

Journal of Biomedical Optics, 2012
We report the first demonstration of deep ultraviolet (DUV) Raman imaging of a cell. Nucleotide distributions in a HeLa cell were observed without any labeling at 257 nm excitation with resonant bands attributable to guanine and adenine. Obtained images represent DNA localization at nucleoli in the nucleus and RNA distribution in the cytoplasm.
Yasuaki, Kumamoto, Atsushi, Taguchi, Nicholas Isaac, Smith, Satoshi, Kawata   +3 more
openaire   +2 more sources

Strongly Confined Excitons in GaN/AlN Nanostructures with Atomically Thin GaN Layers for Efficient Light Emission in Deep-Ultraviolet

, 2019
Fascinating optical properties governed by extremely confined excitons have been so far observed in 2D crystals like monolayers of transition metal dichalcogenides. These materials, however, are limited for production by epitaxial methods.
T. V. Shubina, B. Gil, E. A. Evropeitsev (8081582), B. Gil (8081606), M. O. Nestoklon, S. V. Ivanov (8081603), D. S. Smirnov (8081585), D. V. Nechaev (8081600), G. V. Budkin, V. N. Jmerik, T. V. Shubina (8081588), V. Kh. Kaibyshev (8081591), G. V. Budkin (8081594), D. S. Smirnov, A. A. Toropov, V. N. Jmerik (8081597), A. A. Toropov (2617437), D. V. Nechaev, V. Kh. Kaibyshev, M. O. Nestoklon (2947230), S. V. Ivanov, E. A. Evropeitsev, S. Rouvimov (2572573), S. Rouvimov   +23 more
core   +1 more source

Design of Double-Lattice Photonic Crystal of DUV Laser by ANN-RBF Neural Network

Optics
In this study, a double-lattice photonic crystal structure was designed to achieve deep ultraviolet lasing without the use of any Distributed Bragg Reflector (DBR), which is called a photonic-crystal surface-emitting laser (PCSEL).
Bochao Zhang, Minyan Zhang, Lei Li, Jianglang Bie, Shuoyi Jiao, Zhuanzhuan Guo, Xinjie Cai, Bowen Hou   +7 more
doaj   +1 more source

An Amorphous (Al_0.12Ga_0.88)₂O₃ Deep Ultraviolet Photodetector

IEEE Photonics Journal, 2020
The authors report the deposition of an (AlxGa1-x)2O3 amorphous thin film on sapphire substrates by sputter deposition. An amorphous deep ultraviolet (UV) (Al0.12Ga0.88)2O3 photodetector, with a cutoff wavelength at 230 nm, was also fabricated.
Shu-Bai Liu, Shoou-Jinn Chang, Sheng-Po Chang, Chia-Hsun Chen   +3 more
doaj   +1 more source

Deep-Ultraviolet Plasmon Resonances in Al-Al₂O₃@C Core–Shell Nanoparticles Prepared via Laser Ablation in Liquid

, 2020
We developed a convenient, facile, low-cost, and “green” method to synthesize nanoparticles (NPs) with deep-ultraviolet localized surface plasmon resonances (LSPRs) based on the laser ablation of an aluminum target in liquid.
Yu Gu (162342), Yi Wei (434518), Jun Chen (4238), Haibo Zeng (755740), Mingyou Zhao (8507004), Yuhang Dong (6686636)   +5 more
core   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

FEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi, João C. Encarnação, Valeria Napolitano, Grzegorz Dubin, Grzegorz Popowicz, Karl Andersson, U. Helena Danielson   +6 more
wiley   +1 more source

Ammonia Distribution Measurement on a Hot Gas Test Bench Applying Tomographical Optical Methods

Sensors, 2019
Measuring the distribution of gas concentration is a very common problem in a variety of technological fields. Depending on the detectability of the gas, as well as the technological progress of the sector, different methods are used.
Bernhard Fischbacher, Bernhard Lechner, Bernhard Brandstätter   +2 more
doaj   +1 more source

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

Interaction of HS1BP3 with cortactin modulates TKS5 localisation, cell secretion and cancer malignancy

Molecular Oncology, EarlyView.
Here, we demonstrate that HS1BP3 interacts with Cortactin through a proline‐rich region (PRR3.1) and show that this interaction, and HS1BP3 itself, promote cancer cell proliferation and invasion. Inhibition of this interaction leads to build‐up of TKS5 in multivesicular endosomes and altered secretion of CD63 and CD9, providing an explanation for the ...
Arja Arnesen Løchen, Kristiane Søreng, Chiara Veroni, Laura Trachsel‐Moncho, Nagham Asp, Robin Gaupset, Lars Gustav Lyckander, Helene Knævelsrud, Lars Eftang, Anne Simonsen   +9 more
wiley   +1 more source