Results 111 to 120 of about 4,289,171 (382)

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

Development of SiC Nanocomposites Using Direct Ink Writing Process

Advanced Engineering Materials, EarlyView.
Herein, feedstock inks containing polycarbosilane and various concentrations of SiC nanoparticles (SiCnp) are investigated for fabricating ceramic matrix composites using a DIW 3D printing process. Characterization results from physical measurement, microstructure analysis, and thermal and flexural testing suggested that high‐performance CMC samples ...
Jinchen Han, Israa Eltahir Ali Elfaki, Luke Weston, Chenggang Chen, Donald A. Klosterman, Li Cao   +5 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

Efficient and Scalable Radiative Cooling for Photovoltaics Using Solution‐Processable and Solar‐Transparent Mesoporous Nanoparticles

Advanced Functional Materials, EarlyView.
Graded refractive index (GRI) structures are prepared from the layer‐by‐layer spray coating of the mesoporous SiO2 nanoparticles, showing high solar transparency and thermal emissivity. Under outdoor conditions, after 50 days, the GRI‐coated photovoltaics show on average 6.65 ± 1.48 °C lower than that of the non‐coated references, maintaining 80.9 ± 8 ...
Heesuk Jung, Sung Yoon Min, Byungsoo Kang, Yongseok Yoo, Jihun Jang, Yeoun‐Woo Jang, Hyojeong Choi, Hyeong Won Lee, Swarup Biswas, Yongju Lee, Mansoo Choi, Phillip Lee, Min Seok Jang, Hyeok Kim, Shu Yang   +14 more
wiley   +1 more source

Peering through the dust II: $XMM-Newton$ observations of two additional FIRST-2MASS red quasars

, 2017
We obtained $XMM-Newton$ observations of two highly luminous dust-reddened quasars, F2M1113+1244 and F2M1656+3821, that appear to be in the early, transitional phase predicted by merger-driven models of quasar/galaxy co-evolution. These sources have been
Glikman, Eilat, Lacy, Mark, LaMassa, Stephanie, Piconcelli, Enrico, Urry, Meg   +4 more
core   +1 more source

Stabilized Intermediate Phase Via Pseudo‐Halide Anions Toward Highly Efficient and Light‐Soaking Stable Perovskite Solar Cells

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
The formate pseudo‐halide anion is strategically introduced at the buried interface to stabilize the intermediate phases formed during perovskite crystallization. The controlled crystallization enhances crystallinity and alleviates tensile strain, eliminating residual PbI2 near the buried interface.
Jongdeuk Seo, Yun Seop Shin, Dong Gyu Lee, Jaehwi Lee, Jina Roe, Jung Geon Son, Woojin Lee, Yeonjeong Lee, Dongmin Lee, Ji Won Song, Tae Kyung Lee, Dong Suk Kim, Jin Young Kim   +12 more
wiley   +1 more source

870 micron observations of nearby 3CRR radio galaxies

, 2003
We present submillimeter continuum observations at 870 microns of the cores of low redshift 3CRR radio galaxies, observed at the Heinrich Hertz Submillimeter Telescope.
A. C. Quillen, Alef W., Black A. R. S., Chiaberge M., Chiaberge M., Chiaberge M., Giovannini G., Jessica Almog, Laing R. A., Leahy J. P., Mihoko Yukita, Morganti R., Saikia D. J.   +12 more
core   +2 more sources

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Probing Intergalactic Magnetic Fields in the GLAST Era through Pair Echo Emission from TeV Blazars

, 2008
More than a dozen blazars are known to be emitters of multi-TeV gamma rays, often with strong and rapid flaring activity. By interacting with photons of the cosmic microwave and infrared backgrounds, these gamma rays inevitably produce electron-positron ...
Aharonian, Aharonian, Albert, Böttcher, Dai, Furlanetto, Gnedin, Ichiki, Kataoka, Keitaro Takahashi, Kiyomoto Ichiki, Kohta Murase, Kronberg, Mannheim, Murase, Primack, Shigehiro Nagataki, Sikora, Stecker, Stecker, Susumu Inoue, Takahashi   +21 more
core   +1 more source