Results 111 to 120 of about 4,403,550 (384)

X-Optogenetics and U-Optogenetics: Feasibility and Possibilities

Photonics, 2015
Optogenetics is an established technique that uses visible light to modulate membrane voltage in neural cells. Although optogenetics allows researchers to study parts of the brain like never before, it is limited because it is invasive, and visible light
Rachel Berry, Matthew Getzin, Lars Gjesteby, Ge Wang   +3 more
doaj   +1 more source

The hard X-ray view of bright infrared galaxies

, 2009
Aims. The synthesis of the cosmic X-ray background (CXB) requires a large population of Compton-thick active galactic nuclei that have not been detected so far.
Akylas, Armus, Barger, Bassani, Courvoisier, Dadina, de Rosa, Franceschini, Genzel, Gilli, Gondoin, González-Martín, Grimm, Guainazzi, Kawakatu, Kennicutt, La Franca, Lebrun, Lynden-Bell, Matt, Mushotzky, N. Cabral, Paltani, R. Walter, Risaliti, Risaliti, Sanders, Schmidt, Setti, Terashima, Tozzi, Tueller, Ubertini, Vega, Vignati, Walter, Watabe, Wilkes, Wilkes, Zdziarski   +39 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Discussion on Optical Microscope Imaging Modes and a Cold Light Source Device by Using Frequency Splitting and Compose

Yankuang ceshi, 2014
Halogen lamps, pure water filtered heat rays and LED are the main conventional light sources for the optical microscope. Halogen lamp light source contains a lot of infrared rays from 760 to 1400 nm.
ZHAO Ying-quan, SHEN Zhong-min, WANG Peng   +2 more
doaj   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Energy spectrum of extragalactic gamma-ray sources [PDF]

The result of Monte Carlo electron photon cascade calculations for propagation of gamma rays through regions of extragalactic space containing no magnetic field are given.
Protheroe, R. J.
core   +1 more source

Upper Limits on the Extragalactic Background Light from the Gamma-Ray Spectra of Blazars

, 2005
The direct measurement of the extragalactic background light (EBL) is difficult at optical to infrared wavelengths because of the strong foreground radiation originating in the Solar System.
Aharonian F. A., Armand C., Bradbury S. M., Franceschini A., Guy J., Lagache G., M. Schroedter, Matsumoto T., Nikishov A. I., Petry D.   +9 more
core   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Infrared LED Enhanced Spectroscopic CdZnTe Detector Working under High Fluxes of X-rays

Sensors, 2016
This paper describes an application of infrared light-induced de-polarization applied on a polarized CdZnTe detector working under high radiation fluxes.
Jakub Pekárek, Václav Dědič, Jan Franc, Eduard Belas, Martin Rejhon, Pavel Moravec, Jan Touš, Josef Voltr   +7 more
doaj   +1 more source

Propagation of ultrahigh energy nuclei in clusters of galaxies: resulting composition and secondary emissions

, 2009
We study the survival of ultrahigh energy nuclei injected in clusters of galaxies, as well as their secondary neutrino and photon emissions, using a complete numerical propagation method and a realistic modeling of the magnetic, baryonic and photonic ...
Abbasi, Abraham, Allard, Allard, Arnaud, Arons, Atoyan, Berezinsky, Berezinsky, Binney, Bird, Burns, Clarke, Clarke, Cuoco, D. Allard, Dolag, Ensslin, Epele, Feretti, Gabici, Ghisellini, Holden, Inoue, Inoue, J. Aoi, K. Kotera, K. Murase, Kang, Kashti, Koopmann, Kushnir, Le Floc'h, Martini, Mathur, Miller, Miniati, Murase, Murase, Murase, Osborne, O’Sullivan, Prestage, Rachen, Rachen, Ryu, S. Nagataki, Savaglio, Shinozaki, Stecker, Stecker, T. Pierog, Takami, Totani, Unger, van der Wel, White, Wolfe, Y. Dubois, Zatsepin, Zaw   +60 more
core   +2 more sources