Results 111 to 120 of about 141,990 (293)

First Mid-infrared Detection and Modeling of a Flare from Sgr A*. II. Mid-infrared Spectral Energy Distribution and Millimeter Polarimetry

The Astrophysical Journal
S. D. von Fellenberg et al. reported the first mid-infrared detection of a flare from Sgr A*. The JWST/MIRI/Medium Resolution Spectrometer observations were consistent with an orbiting hotspot undergoing electron injection with a spectrum that ...
Joseph M. Michail, Sebastiano D. von Fellenberg, Garrett K. Keating, Ramprasad Rao, Tamojeet Roychowdhury, S. P. Willner, Nicole M. Ford, Daryl Haggard, Sera Markoff, Alexander Philippov, Bart Ripperda, Sophia Sanchez-Maes, Zach Sumners, Gunther Witzel, Mayura Balakrishnan, Sunil Chandra, Kazuhiro Hada, Macarena Garcia Marin, Mark A. Gurwell, Giovanni G. Fazio, Joseph L. Hora, Braden Seefeldt-Gail, Howard A. Smith   +22 more
doaj   +1 more source

Nonlinear optics in germanium mid-infrared fiber material: Detuning oscillations in femtosecond mid-infrared spectroscopy

AIP Advances, 2017
Germanium optical fibers hold great promise in extending semiconductor photonics into the fundamentally important mid-infrared region of the electromagnetic spectrum. The demonstration of nonlinear response in fabricated Ge fiber samples is a key step in
M. Ordu, J. Guo, G. Ng Pack, P. Shah, S. Ramachandran, M. K. Hong, L. D. Ziegler, S. N. Basu, S. Erramilli   +8 more
doaj   +1 more source

Intensity Noise Optimization of a Mid-Infrared Frequency Comb Difference Frequency Generation Source

, 2019
We experimentally demonstrate in a difference-frequency generation mid-infrared frequency comb source the effect of temporal overlap between pump- and signal- pulse to the relative intensity noise (RIN) of the idler pulse.
de Oliveira, Vinicius Silva, Hartl, Ingmar, Masłowski, Piotr, Ruehl, Axel   +3 more
core   +1 more source

The Mid-Infrared Spectra of Normal Galaxies [PDF]

, 2000
The mid-infrared spectra (2.5 to 5 and 5.7 to 11.6 mu) obtained by ISO-PHOT reveal the interstellar medium emission from galaxies powered by star formation to be strongly dominated by the aromatic features at 6.2, 7.7, 8.6 and 11.3 mu.
Bernard J.-P., Boselli A., Boulanger F., Cesarsky C. J., Cesarsky D., Cesarsky D., Desert F. X., G. Helou, Helou G., Kessler M. F., Lemke D., Lu N., Lutz D., M. W. Werner, Metcalfe L., N. Silbermann, Nanyao Y. Lu, Roche P. F., Roche P. F., S. Malhotra, Silbermann N., Valentijn E. A., Vigroux L.   +22 more
core   +3 more sources

Built‐In Interfacial Electric Field in Hydroxyl‐Terminated MXene/COF Heterostructures for Enhanced Solid‐State Supercapacitors

Advanced Functional Materials, EarlyView.
Hydroxyl‐terminated MXene is integrated with a redox‐active covalent organic framework through electrostatic self‐assembly followed by hydrothermal treatment to construct MXene/COF heterostructures with a built‐in interfacial electric field. Termination‐controlled interfacial electronic modulation induces charge redistribution and favorable band ...
Cheru Fekadu Molla, Birhanu Bayissa Gicha, Boka Fikadu Banti, Indra Memdi Khoris, Jaebeom Lee   +4 more
wiley   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Atomically thin noble metal dichalcogenide: a broadband mid-infrared semiconductor

Nature Communications, 2018
The mid-infrared technologies are essential to various applications but suffer from limited materials with suitable bandgap. Here the authors demonstrate that two-dimensional atomically thin PtSe2 with variable bandgaps in the mid-infrared via layer and ...
Xuechao Yu, Peng Yu, Di Wu, Bahadur Singh, Qingsheng Zeng, Hsin Lin, Wu Zhou, Junhao Lin, Kazu Suenaga, Zheng Liu, Qi Jie Wang   +10 more
doaj   +1 more source

A Review of Mid-Infrared and Near-Infrared Imaging: Principles, Concepts and Applications in Plant Tissue Analysis

Molecules, 2017
Plant cells, tissues and organs are composed of various biomolecules arranged as structurally diverse units, which represent heterogeneity at microscopic levels.
Sevgi Türker-Kaya, Christian W. Huck
doaj   +1 more source

The hunt for red AGN: a new infrared diagnostic [PDF]

, 2014
We introduce a new infrared diagnostic to separate galaxies on the basis of their dominant infrared emission: stellar or nuclear. The main novelty with respect to existing diagnostics, is the usage of a broad band encompassing at the same time the 9 ...
Fadda, Dario, Rodighiero, Giulia
core   +3 more sources

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

Advanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi, Norma Mallegni, Andrea Dorigato, Mario Milazzo   +3 more
wiley   +1 more source