نتایج جستجو برای: visible wavelengths

تعداد نتایج: 94611  

Journal: :Astrophysical Journal Supplement Series 2023

Abstract We present an advanced light-scattering model to retrieve the optical constants of three Martian dust analogs: Johnson Space Center regolith simulant, Enhanced Mojave Mars Simulant, and Global Simulant. The samples are prepared have narrow particle-size distributions within geometric-optics domain. carry out laboratory measurements obtain distributions, shapes, diffuse reflectance spec...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2011
Sivalogeswaran Ratnasingam Steve Collins Javier Hernández-Andrés

In this paper, the results of an investigation of the possibility of extending "color constancy" to obtain illuminant-invariant reflectance features from data in the near-ultraviolet (UV) and near-infrared (IR) wavelength regions are reported. These features are obtained by extending a blackbody-model-based color constancy algorithm proposed by Ratnasingam and Collins [J. Opt. Soc. Am. A27, 286...

The acid oxidation of carbon nanotube generally results in opening the close ends of the nanotube and to make surface modifications. Herewith, Multiwall carbon nanotubes (MWCNTs) were oxidized in acids at high temperature experimental conditions which led to the formation of graphene quantum dots (GQDs).   High resolution transmission electron microscope (HRTEM), energy dispersive X-ray spectro...

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