نتایج جستجو برای: optical transmittance
تعداد نتایج: 269282 فیلتر نتایج به سال:
in this paper thin films of tin sulfide (sns) were deposited on the glass substrates using spray pyrolysis method with the substrate temperatures in the range of 400–600℃, keeping the other deposition parameters constant. in this work the characteristic of sns thin films investigated. the xrd pattern and optical transmittance of thin films also are discussed. with the change in concen...
The propagation of light in tissue may be calculated by exact transport theory, or the approximate diffusion theory, provided the optical properties are known at the source wavelength. Optical properties for the exact methods are the absorption coefficient, scattering coefficient, and angular distribution of scattering. Appropriate properties for diffusion theory are the diffusion length and di...
Abstract: Different thickness of Cu2S thin films were prepared by vacuum evaporation under a pressure of 10-6 torr at an evaporation rate of 3Å /sec. Cu2S has direct band gap energy and indirect band gap energy at 1.2eV and 1.8 eV respectively. This paper presents the analysis of structural and optical properties of the Cu2S thin film by X-ray diffractometer (XRD) and UV-Vis-NIR Spectrophotomet...
Tungsten trioxide (WO3) thin films were coated onto fluorine tin oxide coated glass substrates, using electrodeposition technique via aqueous solution of peroxotungstic acid. WO3 films were evaluated as a function of annealing temperature (60°C, 100°C, 250°C and 400°C). The films were analyzed by field emission Scanning Electron Microscopy (SEM), UV-visible spectrometer and cyclic voltammogram....
In this paper thin films of tin sulfide (SnS) were deposited on the glass substrates using spray pyrolysis method with the substrate temperatures in the range of 400–600℃, keeping the other deposition parameters constant. In this work the characteristic of SnS thin films investigated. The XRD pattern and optical transmittance of thin films also are discussed. With the change in concen...
The phenomenon of photon tunneling, which depends on evanescent waves for radiative transfer, has important applications in microscale energy conversion devices and nearfield optical microscopy. In recent years, there has been a surge of interest in the socalled negative index materials (NIMs), which have simultaneously negative electric permittivity and negative magnetic permeability. The pres...
This work accounts for an investigation about the diurnal variation of aerosol spectral transmittance of solar irradiance under dominant wind conditions as case studies. Such a work is carried out in Athens for first time. The spectral transmittance values estimated were derived using Ž . ground-based spectral measurements of beam irradiance in the range 310–575 nm UV and VIS . The data were re...
For transparent conducting electrodes in optoelectronic devices, electrical sheet resistance and optical transmittance are two of the main criteria. Recently, metal nanowires have been demonstrated to be a promising type of transparent conducting electrode because of low sheet resistance and high transmittance. Here we incorporate a mesoscale metal wire (1-5 μm in diameter) into metal nanowire ...
In this study, Spark Plasma Sintering (SPS) of both slip casted and powder specimens of alumina/ yttria core-shell nanocomposite were utilized for fabricating transparent Yttrium Aluminum Garnet (YAG) ceramics. Phase evolution, optical transmittance and the microstructure of sintered samples were compared. In slip casting process, Dolapix CE64 was used as a dispersant for preparing t...
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