نتایج جستجو برای: Bias-induced absorption

تعداد نتایج: 1207012  

Journal: :journal of sciences islamic republic of iran 0
a. eskandari-asl department of physics, faculty of sciences, university of shahid beheshti, tehran, islamic republic of iran

the one photon absorption (opa) cross section of a current carrying two-orbital quantum dot (qd) with strong electron-phonon interaction (polaron regime) is considered. using the self-consistent non-equilibrium hartree-fock (hf) approximation, we determine the dependence of opa cross section on the applied bias voltage, the strength of effective electron-electron interaction, and level spacing ...

A. Eskandari-asl

The one photon absorption (OPA) cross section of a current carrying two-orbital quantum dot (QD) with strong electron-phonon interaction (polaron regime) is considered. Using the self-consistent non-equilibrium Hartree-Fock (HF) approximation, we determine the dependence of OPA cross section on the applied bias voltage, the strength of effective electron-electron interaction, and level spacing ...

Journal: :iranian journal of medical sciences 0
bahia namavar jahromi maternal-fetal medicine research center, infertility research center, department of gynecology and obstetrics, school of medicine, shiraz university of medical sciences, shiraz, iran foroogh poorgholam student research center, department of gynecology and obstetrics, school of medicine, shiraz university of medical sciences, shiraz, iran gholamhossein yousefi department of pharmaceutics, school of pharmacy, shiraz university of medical sciences, shiraz, iran leila salarian department of pediatrics, school of medicine, shiraz university of medical sciences, shiraz, iran

background: we sought to compare the effectiveness and safety of sublingual versus vaginal misoprostol for the termination of pregnancy with a live full-term fetus. methods: this randomized, triple-blind, placebo-controlled clinical trial was performed on 200 primiparous women with normal, singleton, full-term pregnancies candidated for the induction of labor. sublingual and vaginal tablets con...

2003
N. Bellouin O. Boucher D. Tanré O. Dubovik

[1] We estimate aerosol absorption over the clear-sky oceans using aerosol geophysical products from POLDER-1 space measurements and absorption properties from ground-based AERONET measurements. Our best estimate is 2.5 Wm 2 averaged over the 8-month lifetime of POLDER-1. Low and high absorption estimates are 2.2 and 3.1 Wm 2 based on the variability in aerosol singlescattering albedo observed ...

Journal: :international journal of optics and photonics 0
siamak khademi department of physics, university of zanjan samira alipour department of physics, university of zanjan

the semi-classical model of atom-field interaction has been fully studied for some multilevel atoms, e.g. vee, l, cascade x , y, and inverted y and so on. this issue is developed into the full-quantum electrodynamics formalism, where the probe and coupling electromagnetic fields are quantized. in this article, we investigate the full-quantum model of absorption and dispersion spectrum of trappe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

Journal: :Analytical chemistry 2012
Andrew P Bonifas Richard L McCreery

To understand the mechanism of bias-induced resistance switching observed in polypyrrole (PPy) based solid state junctions, in situ UV-vis absorption spectroscopy was employed to monitor oxidation states within PPy layers in solution and in PPy/metal oxide junctions. For PPy layers in acetonitrile, oxidation led primarily to cationic polaron formation, while oxidation in 0.1 M NaOH in H(2)O res...

Journal: :Monthly Notices of the Royal Astronomical Society 2022

Ultraviolet (UV) transmission spectroscopy probes atmospheric escape, which has a significant impact on planetary evolution. If unaccounted for, interstellar medium absorption (ISM) at the position of specific UV lines might bias transit depth measurements, and thus potentially affect (non-)detection features in spectra. Ultimately, this is connected to so called ``resolution-linked bias'' (RLB...

Journal: :journal of sciences islamic republic of iran 0

in this paper we examine the absorption and dispersion properties of a weak probe field via electromagnetically induced transparency (eit) in a four-level system. it is shown that under certain condition, using this model, the absorption cancellation is appeared and the medium becomes transparent to the weak probe field. it will be shown that the controlling of absorption and dispersion spectru...

Journal: :Nano letters 2015
Vrinda Thareja Ju-Hyung Kang Hongtao Yuan Kaveh M Milaninia Harold Y Hwang Yi Cui Pieter G Kik Mark L Brongersma

We demonstrate electrical control over coherent optical absorption in a graphene-based Salisbury screen consisting of a single layer of graphene placed in close proximity to a gold back reflector. The screen was designed to enhance light absorption at a target wavelength of 3.2 μm by using a 600 nm-thick, nonabsorbing silica spacer layer. An ionic gel layer placed on top of the screen was used ...

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