Results 91 to 100 of about 158,783 (289)

New Opportunities in Mid-Infrared Emission Control

Sensors, 2015
Tunable laser absorption spectroscopy (TLAS) has been well accepted as a preferred measurement technique for many industrial applications in recent years, especially for in situ applications. Previously, mainly near-infrared lasers have been used in TLAS
Peter Geiser
doaj   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

A Cu‐Based Near‐IR Active MOF with an Ion‐Pair Guest Exhibiting Versatile and Selective Gas‐Solid Reactivity

Advanced Materials, EarlyView.
The new Cu‐containing MOF (Me2NH2)(CuICl2)@[Cu4(INA)4Cl2O]·1.5dmf (3) contains a cation and an anion as guests and shows UV‐near‐mid‐IR absorption and near‐IR emission. MOF 3 shows gas‐solid reactivity in the presence of NH3 and HCOOH to yield two new 3D MOF.
Rajat Saha, Alejandro Cortés‐Villena, Silvia Gómez‐Coca, Alberto Fernández‐Alarcón, Joaquín Calbo, Raquel E. Galian, Enrique Ortí, Eliseo Ruiz, Mónica Giménez‐Marqués, Samia Benmansour, Carlos J. Gómez‐García   +10 more
wiley   +1 more source

Electro-optical switching in a nonlinear metasurface

npj Nanophotonics
Nonlinear metasurfaces are multifunctional photonic elements that generate and control light, enabling multiple proof-of-principle applications, such as in nonlinear holography, beam shaping, and nanoscale sources of entangled photon pairs. Active tuning
Matthew D. Feinstein, Alexander Andronikides, Euclides Almeida   +2 more
doaj   +1 more source

Magellanic Cloud stars with TiO bands in emission: binary post-RGB/AGB stars or young stellar objects?

, 2013
Fourteen stars from a sample of Magellanic Cloud objects selected to have a mid-infrared flux excess have been found to also show TiO bands in emission. The mid-infrared dust emission and the TiO band emission indicate that these stars have large amounts
Kamath, D., Van Winckel, H., Wood, P. R.
core   +1 more source

Photoacoustic spectroscopy of NO$_2$ using a mid-infrared pulsed optical parametric oscillator as light source

, 2017
A photoacoustic (PA) sensor for spectroscopic measurements of NO$_2$-N$_2$ at ambient pressure and temperature is demonstrated. The PA sensor is pumped resonantly by a nanosecond pulsed single-mode mid-infrared (MIR) optical parametric oscillator (OPO).
Lassen, Mikael, Lamard, Laurent, Balslev-Harder, David, peremans, Andre, Petersen, Jan C.   +4 more
openaire   +2 more sources

3D Anodic Alumina Nanoarchitectures: A Decade of Progress from Foundational Science to Functional Metamaterials

Advanced Materials, EarlyView.
Ordered three‐dimensional anodic aluminum oxide (3D‐AAO) nanoarchitectures with longitudinal and transverse pores enable architecture‐driven metamaterials. The review maps fabrication advances, including hybrid pulse anodization, and shows how 3D‐AAO templates tailor properties across magnetism, energy, catalysis, and sensing.
Marisol Martín‐González
wiley   +1 more source

A Diverse, Overlooked Population of Type Ia Supernovae Exhibiting Mid-infrared Signatures of Delayed Circumstellar Interaction

The Astrophysical Journal Letters
Type Ia supernovae (SNe Ia) arise from the thermonuclear explosions of white dwarfs in multiple-star systems. A rare subclass of SNe Ia exhibit signatures of interaction with circumstellar material (CSM), allowing for direct constraints on companion ...
Geoffrey Mo, Kishalay De, Eli Wiston, Nayana A. J., Raffaella Margutti, Danielle Frostig, Jesper Sollerman, Yashvi Sharma, Takashi J. Moriya, Kevin B. Burdge, Jacob Jencson, Viraj R. Karambelkar, Nathan P. Lourie   +12 more
doaj   +1 more source

High-Power Mid-Infrared Supercontinuum Light Source Based on High-Quality Fusion of Large-Diameter Silica Fiber and Fluorotellurite Fiber

IEEE Photonics Journal
Mid-infrared supercontinuum (MIR-SC) light sources have garnered significant attention in fields such as material detection and national defence. Currently, mid-infrared lasers suffer from issues including low output power, a narrow spectral range, and a
Xuan Wang, Ying Yang, Chuanfei Yao, Jichen Pan, Yamin Liu, Xuelian Yang, Pingxue Li   +6 more
doaj   +1 more source

A Colloidal Quantum Dot Thermistor and Bolometer

Advanced Materials, EarlyView.
This work introduces colloidal quantum dot thermistors employing a potential barrier structure to tune the activation energy of transport and hence the temperature coefficient of resistance (TCR). Upon integration with plasmonic absorbers, the CQD‐based bolometer device enables room‐temperature wavelength‐selective photodetection across the mid‐ to ...
Gaurav Kumar, Mariona Dalmases, Nima Taghipour, Rajesh Bera, Guy L. Whitworth, Goretti Torres Perez, Miguel Dosil, Gerasimos Konstantatos   +7 more
wiley   +1 more source