say you exposure your sample to gamma souce what is the effect on the optical properties?
It depends on composition of chalcogen alloy,
dose (power and time ) of used radiation.
If I have deposited semiconductor thin film followed by metal deposition for electrical measurements, and since both of the shape and area of the contact electrode a can be varied,s illustrated in...
08 September 2018 918 4 View
Optical absorption of nanoparticles is characterized by broad absorption spectrum with no clear edge for the main absorption band (I. e. Band gap). What are the main reasons?
01 February 2018 4,690 7 View
Through the analysis of some spectroscopic spectra (e.g. XRD, PL, FTIR and Raman) various baseline mode can be applied for obtaining a well defined Gaussian or lorentzian peaks, hence baseline...
31 December 2017 6,726 2 View
in the case of ZnS nanoparticles, the transformation from cubic to hexagonal associated with the increase in the particle size and decrease in the value of optical band gap, which is contrary to...
06 July 2016 10,128 1 View
I excited nanostructured ZnS with two different wavelengths and get the same emission peak center, but there is a big difference in the emission intensity, really I found difficulty in the...
06 July 2016 6,139 1 View
in attempt for investigation the distribution of trap states in ternary alloy of ZnxCd1-xS quantum dots, which produced by Zn, Cd and S interstitial and vacancies, some confusion in understanding...
09 October 2015 2,657 2 View
in some physical experiment glass convex lens were placed in the path of laser light for magnification geometrically not Intensity. I wander how this and the laser incident parallel to the...
02 March 2015 9,192 0 View
I tried to measure I - V characteristics for nanoparticles in the powder form, but I found it was not easy. What are the suitable circumstances for an accurate measurement?
10 November 2014 5,678 9 View
I have a strange result, in which CdSO3 is formed with annealing of CdS nanoparticles at 600oC. I assumed that I would be getting CdO, so it's a strange result for me and no literature confirms...
08 September 2014 2,423 3 View
Polyethylene glycol used as a surfactant to prepare metal oxide nano particles.
06 July 2014 8,162 1 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!
11 August 2024 3,770 4 View
Require for Rietveld refinement in XRD.
08 August 2024 3,081 2 View
If we map as a continuous motion an ionising electron (beginning its journey at n=1) in an H atom, a specific hyperbolic spiral appears (see animation). When we solve this spiral formula, we find...
07 August 2024 5,343 2 View
Let's say we have a standard, regular hexagonal honeycomb with a 3-arm primitive unit cell (something like the figure attached; the figure is only representative and not drawn to scale). The...
07 August 2024 1,937 1 View
Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...
05 August 2024 3,783 2 View
I am currently using CASTEP version 2020. When I want to run optical properties calculations with spin-orbit coupling(SOC), I encounter the following error in a pop-up window before the job gets...
02 August 2024 2,890 0 View
I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....
31 July 2024 3,843 7 View
Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.
31 July 2024 9,140 2 View
Hello everyone, I am new to this characterization but watching videos on youtube I have already plotted a Nyquist plot (Z' and -Z'') and already fitted models on my material using Zsim. But now I...
29 July 2024 1,376 0 View