Results 81 to 90 of about 155,915 (352)

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

Spitzer IRAC Imaging of the Relativistic Jet from Superluminal Quasar PKS 0637-752

, 2005
Emission from the relativistic jet located at hundreds of kpc from the core of the superluminal quasar PKS 0637-752 was detected at 3.6 and 5.8 microns with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope.
C. C. Cheung, C. Megan Urry, Fabrizio Tavecchio, Jeffrey Van Duyne, Laura Maraschi, Rita M. Sambruna, Savage A., Tadayuki Takahashi, Yasunobu Uchiyama   +8 more
core   +1 more source

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

Theoretical analysis of hard x-ray generation by nonperturbative interaction of ultrashort light pulses with a metal

Structural Dynamics, 2015
The interaction of intense femtosecond pulses with metals allows for generating ultrashort hard x-rays. In contrast to plasma theories, tunneling from the target into vacuum is introduced as electron generation step, followed by vacuum acceleration in ...
Jannick Weisshaupt, Vincent Juvé, Marcel Holtz, Michael Woerner, Thomas Elsaesser   +4 more
doaj   +1 more source

Sunscreens: Time to think beyond UV rays

Pigment International, 2018
It has been known to us that solar radiation contributes to photoaging. Until recently, it was thought to be due to ultraviolet rays alone. However, a growing number of evidence confirms that visible and infrared (IR) rays also contribute to extrinsic ...
Chitralekha Keisham, Nelson Elangbam, Rashmi Sarkar   +2 more
doaj   +1 more source

Variable Gamma-ray Emission Induced by Ultra-High Energy Neutral Beams: Application to 4C +21.35

, 2012
The flat spectrum radio quasar (FSRQ) 4C +21.35 (PKS 1222+216) displays prominent nuclear infrared emission from ~1200 K dust. A 70 -- 400 GeV flare with ~10 min variations during half an hour of observations was found by the MAGIC telescopes, and GeV ...
Abdo, Abdo, Abdo, Abdo, Abdo, Abdo, Ackermann, Ackermann, Aharonian, Albert, Aleksić, Atoyan, Atoyan, Bromberg, Brown, Böttcher, Böttcher, Błażejowski, Carrasco, Celotti, Charles D. Dermer, Cortina, Dermer, Dermer, Dermer, Dermer, Dermer, Dermer, Essey, Fan, Farrar, Finke, Finke, Foschini, Foschini, Fossati, Georganopoulos, Georganopoulos, Georganopoulos, Gould, Hajime Takami, Kohta Murase, Malmrose, Mannheim, Mariotti, Marscher, Marscher, Murase, Murase, Murase, Mücke, Nalewajko, Neronov, Poutanen, Razzaque, Shaw, Sikora, Tanaka, Tavecchio, Tavecchio, Wagner, Wang, Waxman   +62 more
core   +1 more source

X-ray high-resolution diffraction using refractive lenses [PDF]

, 2005
Refractive x-ray lenses have recently been applied for imaging and scanning microscopy with hard x rays. We report the application of refractive lenses in an optical scheme for high-resolution x-ray diffraction, performed at a high brilliance synchrotron
Drakopoulos, Michael, Schilling, Jörg, Snigirev, Anatoly, Snigireva, Irina   +3 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

On the simultaneous generation of high energy emission and submillimeter/infrared radiation from active galactic nuclei

, 2010
For active galactic nuclei (AGNs) we study the role of the mechanism of quasi-linear diffusion (QLD) in producing the high energy emission in the MeV-GeV domains strongly connected with the submillimeter/infrared radiation.
Aliu, Belvedere, Blandford, Gangadhara, Ghisellini, Giroletti, Kazbegi, Landau, Machabeli, Machabeli, Machabeli, Malov, Rybicki, Thorne, Z. Osmanov   +14 more
core   +1 more source

Simultaneous X-ray, radio, near-infrared, and optical monitoring of Young Stellar Objects in the Coronet cluster [PDF]

, 2006
Multi-wavelength (X-ray to radio) monitoring of Young Stellar Objects (YSOs) can provide important information about physical processes at the stellar surface, in the stellar corona, and/or in the inner circumstellar disk regions. While coronal processes
A. Brandeker, B. Posselt, Berger, Bower, Broeg, C. Broeg, Casey, Eiroa, F. M. Walter, Feigelson, Feigelson, Feigelson, Forbrich, Gagné, Getman, Guenther, Gullbring, Güdel, Güdel, Güdel, Hamaguchi, Imanishi, J. Forbrich, Jardine, K. M. Menten, K. Tachihara, Kastner, M. Tamura, N. Kusakabe, N. Matsunaga, Neuhäuser, Prato, Preibisch, Preibisch, R. Neuhäuser, S. Fornasier, Schmitt, Skinner, Stassun, Stelzer, Th. Preibisch, Walter, Y. Nakajima   +42 more
core   +4 more sources