Results 91 to 100 of about 46,382 (297)

Ladder‐Type Benzene‐Perylene Dyes with Efficient Laser Properties in the Near‐IR by Detracting/Activating Low/High Frequency Vibronic Modes

Advanced Functional Materials, EarlyView.
The NNR‐n series of oligomeric nanographenes delivers exceptional emission performance. This work shows that this performance is originated by their ladder‐type structure, which effectively deactivates low‐frequency vibronic modes. This deactivation neglects the main pathway for non‐emissive deactivation, even in the near‐infrared region. The potential
Marcos Díaz‐Fernández, Álex Farrando Pérez, Fernando Gordillo Gámez, Pedro G. Boj, José M. Villalvilla, José A. Quintana, Yanpei Wan, Daniel Aranda, José Manuel Marín‐Beloqui, Jishan Wu, Zebing Zeng, María A. Díaz‐García, Juan Casado   +12 more
wiley   +1 more source

The local dust foregrounds in the microwave sky: I. Thermal emission spectra

, 2009
Analyses of the cosmic microwave background (CMB) radiation maps made by the Wilkinson Microwave Anisotropy Probe (WMAP) have revealed anomalies not predicted by the standard inflationary cosmology.
Dikarev, V., Krivov, A., Krueger, H., Preuss, O., Solanki, S.   +4 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Preliminary research on field measurement of spectral emissivity of rice in thermal infrared

浙江大学学报. 农业与生命科学版, 2010
The procedure and method of emissivity field measurement for rice were conducted using a portable Fourier transform infrared spectrometer. The results showed that rice emissivity value measured indoor was very close to 1.0, and no distinct emissivity ...
LIN Fen-fang, DENG Jing-song, DING Xiao-dong, AO Wei-jiu, WANG Ke   +4 more
doaj   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

Advanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr, Alexander Biewald, Andre Mähringer, Thaddäus J. Koller, Peter Mayer, Markus Döblinger, Achim Hartschuh, Dana D. Medina   +7 more
wiley   +1 more source

Research progress in high-temperature infrared stealth materials

Cailiao gongcheng
Infrared radiation at the hot-section of the aero engine is easily detected by infrared detectors， which is not conducive to aircraft service in a complex monitoring environment.
GUO Jincheng, REN Sue, CHEN Yanfei
doaj   +1 more source

Multi-Spectral Metasurface With High Optical Transparency, Low Infrared Surface Emissivity, and Wideband Microwave Absorption

Frontiers in Physics, 2020
In this article, we propose the design of a multispectral metasurface (MSM), which can simultaneously achieve quite good optical transparency, low infrared (IR) emissivity, and wideband microwave absorption.
Sining Huang, Qi Fan, Jiafu Wang, Cuilian Xu, Binke Wang, Baiyu Yang, Changhui Tian, Zhen Meng   +7 more
doaj   +1 more source

Emission from Very Small Grains and PAH Molecules in Monte Carlo Radiation Transfer Codes: Application to the Edge-On Disk of Gomez's Hamburger

, 2008
We have modeled optical to far infrared images, photometry, and spectroscopy of the object known as Gomez's Hamburger. We reproduce the images and spectrum with an edge-on disk of mass 0.3M_sun and radius 1600AU, surrounding an A0 III star at a distance ...
Draine, Bruce, Robitaille, Thomas, Whitney, Barbara, Wood, Kenneth   +3 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

Alternative coatings to cyanide silver coatings with low infrared emissivity for tokamak components

Nuclear Materials and Energy
Alternative to cyanide silver coatings with low infrared emissivity for tokamak components were prepared by cyanide-free silver plating on nuclear-grade 304L stainless steel.
Dan Liu, Yuanjing Liu, Wei Yuan, Haitao Li, Xiong Huang, Zhiheng Zhang, Yinying Sheng, Zimin Li, Kaihui Dong, Wanqi Chen, Lan Cui, Dayong Shan   +11 more
doaj   +1 more source