Results 11 to 20 of about 840,202 (297)

AN INVESTIGATION OF THE POROUS SILICON OPTICAL-ABSORPTION POWER-LAW NEAR THE BAND-EDGE [PDF]

open access: yes, 2002
A theoretical investigation of the absorption coefficient of p-type doped porous silicon near the band edge is presented. We assume that the absorption coefficient is constructed by taking an average over a distribution (in terms of band gap) of ...
CHOY, TC, DERLET, PM, STONEHAM, AM
core   +1 more source

Investigation of nonlinear absorption processes with femtosecond light pulses in lithium niobate crystals [PDF]

open access: yes, 2005
The propagation of high-power femtosecond light pulses in lithium niobate crystals (LiNbO3) is investigated experimentally and theoretically in collinear pump-probe transmission experiments.
Beyer, O.   +5 more
core   +1 more source

Linearized Reconstruction for Diffuse Optical Spectroscopic Imaging [PDF]

open access: yes, 2018
In this paper, we present a novel reconstruction method for diffuse optical spectroscopic imaging with a commonly used tissue model of optical absorption and scattering.
Ammari, Habib   +2 more
core   +2 more sources

Direct determination of absorption anisotropy in colloidal quantum rods [PDF]

open access: yes, 2012
We propose a direct method to determine absorption anisotropy of colloidal quantum rods. In this method, the rods are aligned in solution by using an alternating electric field and we measure simultaneously the resulting average change in absorption.
Compernolle, Sien   +6 more
core   +1 more source

Measurement of the diffuse field sound absorption using a sound field synthesis method

open access: yesActa Acustica, 2023
A method for measuring the diffuse field sound absorption coefficient of a material using sound field synthesis is proposed. A planar loudspeaker array is first used to generate acoustic plane waves with variable incidence angle on the surface of a ...
Dupont Samuel   +5 more
doaj   +1 more source

Fiber Weight Fraction Effect to Acoustic Properties of RHDPE Cantula Composite

open access: yesMekanika, 2017
In this study, composites made from recycled HDPE and Cantula fiber have been done and the absorption coefficient have been measured. Composites rHDPE-Cantula were made using hot press for approximately 60 minutes with 170oC temperature while pressure ...
Muhammad Taufik Burhany Hendrowarsito   +2 more
doaj   +1 more source

Absorption-based algorithm for satellite estimating the particulate organic carbon concentration in the global surface ocean

open access: yesFrontiers in Marine Science, 2023
Particulate organic carbon (POC) in the surface ocean contributes to understanding the global ocean carbon cycle system. The surface POC concentration can be effectively detected using satellites.
Qiang Li   +4 more
doaj   +1 more source

Interplay between localization and absorption in disordered waveguides [PDF]

open access: yes, 2013
This work presents results of ab-initio simulations of continuous wave transport in disordered absorbing waveguides. Wave interference effects cause deviations from diffusive picture of wave transport and make the diffusion coefficient position- and ...
Payne, Ben, Yamilov, Alexey G.
core   +3 more sources

Optimization of Sound Absorption Performance of OGFC Asphalt Mixture Based onAcoustic Parameters [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban
In the phenomenological model, the sound absorption coefficient of porous materials was used to explaintakes into account the energy dissipation generated by the propagation of sound waves in the void structure.
WU Wenliang, LI Chenyue, DAI Shenglin
doaj   +1 more source

Ab Initio Study of Optical Properties of Hybrid Films Based on Bilayer Graphene and Single-Walled Carbon Nanotubes

open access: yesC, 2023
In recent years, the possibility of combining graphene and carbon nanotubes has attracted much attention from researchers attempting to obtain new multifunctional hybrid materials with promising properties.
Michael M. Slepchenkov   +3 more
doaj   +1 more source

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