Results 41 to 50 of about 4,484,191 (405)

Tuning the emission spectrum of highly stable cesium lead halide perovskite nanocrystals through poly(lactic acid)-assisted anion-exchange reactions

open access: yes, 2018
We demonstrate an organic macromolecule-assisted anion-exchange reaction method for tuning the emission spectrum of cesium lead halide perovskite (CsPbX3) nanocrystals (NCs) from green to near-ultraviolet using a microreactor.
Rao Longshi   +8 more
semanticscholar   +1 more source

Indirect measurement of infrared absorption spectrum through thermal emission of meta-cavity array [PDF]

open access: yesOptics Express 31, 39832 (2023), 2023
Controlling thermal emission is essential for various infrared spectroscopy applications. Metasurfaces can be utilized to control multiple degrees of freedom of thermal emission, enabling the compact thermal emission materials and devices. Infrared spectroscopy such as FTIR (Fourier transform infrared spectroscopy), usually requires external infrared ...
arxiv   +1 more source

The re-emission spectrum of digital hardware subjected to EMI [PDF]

open access: yes, 2003
The emission spectrum of digital hardware under the influence of external electromagnetic interference is shown to contain information about the interaction of the incident energy with the digital circuits in the system.
Fischer, K   +4 more
core   +1 more source

Tailored emission spectrum of 2D semiconductors using plasmonic nanocavities

open access: yes, 2017
Tailoring light–matter interactions in monolayer MoS2 is critical for its use in optoelectronic and nanophotonic devices. While significant effort has been devoted to enhancing the photoluminescence intensity in monolayer MoS2, tailoring of the emission ...
Jiani Huang   +4 more
semanticscholar   +1 more source

Nitride superluminescent diodes with broadened emission spectrum fabricated using laterally patterned substrate.

open access: yesOptics Express, 2016
We demonstrate InGaN/GaN superluminescent diodes with broadened emission spectra fabricated on surface-shaped bulk GaN (0001) substrates. The patterning changes the local vicinal angle linearly along the device waveguide, which results in an indium ...
A. Kafar   +8 more
semanticscholar   +1 more source

Spectrum of Singly Charged Uranium (U II) : Theoretical Interpretation of Energy Levels, Partition Function and Classified Ultraviolet Lines

open access: yesAtoms, 2017
In an attempt to improve U II analysis, the lowest configurations of both parities have been interpreted by means of the Racah-Slater parametric method, using Cowan codes.
Ali Meftah   +3 more
doaj   +1 more source

Evidence for Inverted Spectrum 20 GHz Emission in the Galactic Plane [PDF]

open access: yesAstrophys.J.661:938-943,2007, 2006
A comparison of a 19 GHz full-sky map with the WMAP satellite K band (23 GHz) map indicates that the bulk of the 20 GHz emission within 7 degrees of the Galactic plane has an inverted (rising) spectrum with an average spectral index alpha = 0.21 +/- 0.05.
arxiv   +1 more source

The sudden appearance of CO emission in LHA 115-S 65 [PDF]

open access: yes, 2012
Molecular emission has been detected in several Magellanic Cloud B[e] supergiants. In this Letter, we report on the detection of CO band head emission in the B[e] supergiant LHA 115-S 65, and present a K-band near-infrared spectrum obtained with the ...
Aret   +46 more
core   +2 more sources

Radio Spectral Index Variations and Physical conditions in Kepler's Supernova Remnant [PDF]

open access: yesAstrophys.J. 580 (2002) 914-927, 2002
A new epoch of VLA measurements of Kepler's supernova remnant was obtained to make accurate measurements of the radio spectral index variations and polarization. We have compared these new radio images with Halpha, infrared, and X-ray data to better understand the three dimensional structure and dynamics of Kepler, and to better understand the physical
arxiv   +1 more source

Emission spectrum of the driven nonlinear oscillator [PDF]

open access: yes, 2012
Motivated by recent "circuit QED" experiments we investigate the noise properties of coherently driven nonlinear resonators. By using Josephson junctions in superconducting circuits, strong nonlinearities can be engineered, which lead to the appearance ...
St'ephane Andr'e   +4 more
semanticscholar   +1 more source

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