Results 111 to 120 of about 2,059,339 (331)

High-Energy Spectral Complexity from Thermal Gradients in Black Hole Atmospheres

, 1995
We show that Compton scattering of soft photons with energies near 100 eV in thermally stratified black-hole accretion plasmas with temperatures in the range 100 keV - 1 MeV can give rise to an X-ray spectral hardening near 10 keV. This could produce the
C. D. Dermer, George I. M., Ghisellini G., Guilbert P. W., J. G. Skibo, Maisack M., Matt G., Matt G., Mushotzky R. F., Mushotzky R. F., Nandra K., Nandra K., Nandra K., Shakura N. I., Turner T. J., van Dijk R., Warwick R. S., Yaqoob T.   +17 more
core   +1 more source

A Radiation-Hardened SAR ADC with Delay-Based Dual Feedback Flip-Flops for Sensor Readout Systems [PDF]

, 2019
Duckhoon Ro, Changhong Min, Myounggon Kang, Ik‐Joon Chang, Hyung‐Min Lee   +4 more
openalex   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

Computational and experimental determination of laser hardening zones and tribotechnical characteristics of tool steels [PDF]

E3S Web of Conferences
The paper presents the results of metallographic studies and tribotechnical tests of samples of Cr12V1 steel with laser hardening. The influence of the processing modes of the edge of the samples on the geometric parameters of the quenching zones and ...
Biryukov Vladimir
doaj   +1 more source

Magnetic Field Amplification and Flat Spectrum Radio Quasars

, 2014
We perform time-dependent, spatially-resolved simulations of blazar emission to evaluate several flaring scenarios related to magnetic-field amplification and enhanced particle acceleration.
Bailyn, Charles D., Boettcher, Markus, Bonning, Erin W., Buxton, Michelle, Chatterjee, Ritaban, Chen, Xuhui, Coppi, Paolo, Fossati, Giovanni, Isler, Jedidah, Maraschi, Laura, Pohl, Martin, Urry, Meg, Zhang, Haocheng   +12 more
core   +1 more source

Radiation hardening techniques for Er/Yb doped optical fibers and amplifiers for space application.

Optics Express, 2012
We investigated the efficiencies of two different approaches to increase the radiation hardness of optical amplifiers through development of improved rare-earth (RE) doped optical fibers. We demonstrated the efficiency of codoping with Cerium the core of
S. Girard, M. Vivona, A. Laurent, B. Cadier, C. Marcandella, T. Robin, E. Pinsard, A. Boukenter, Y. Ouerdane   +8 more
semanticscholar   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Analysis of Laser Hardening Possibility of Teeth of Loaded Cylindrical Gears Made of Structural Steels

Механика машин, механизмов и материалов
The relevance is shown for replacing expensive alloy steels, of which loaded cylindrical gears are currently made, with cheaper (up to 2.5 times) structural steels, improving the processes of hardening the teeth of loaded cylindrical gears and reducing ...
Mark M. Kane, Oleg G. Devoino, Irina V. Shvets   +2 more
doaj   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source