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 incidence axis
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
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
say you exposure your sample to gamma souce what is the effect on the optical properties?
06 July 2014 5,218 1 View
i am unable to interpret why its increases in start as shown in figure
11 August 2024 2,179 1 View
I am using Rhodamine6G as gain medium and silver nanoparticles as scatterers on a microscope slide and laser input 532 nm comes from above.
09 August 2024 9,894 2 View
I need a very narrow glass capillary for my research. How can I make a glass capillary with an inner diameter of around 200 to 500 nanometers?
08 August 2024 8,915 0 View
I am interested to know the behavior of dyes toward light. Specifically, Blue dyes re-emit the spectrum, especially from the green zone (known as principal in LED lamps, and blue dyes are known...
05 August 2024 3,290 1 View
There are three operating parameters - the laser power, the diameter of the focus spot and the scanning speed. It is necessary to obtain a seam of a given depth without pores. What parameter...
27 July 2024 7,168 2 View
Though much literature suggests fitting a Voigt profile on a LIBS peak, is it also possible to fit a Gaussian profile on the LIBS peak? I have 204 spectra files, and I am building a pipeline for...
23 July 2024 6,127 1 View
I would like to use biofilmQ to analyse confocal laser image, how can do?
16 July 2024 7,628 2 View
I will polymerise Aniline on ITO glass WE, using 1M of H2SO4 and a potentiostat. However, I am not sure if I have to do the electrochemical polymerisation inside a hood. Is it necessary? Is the...
10 July 2024 2,937 3 View
Hello ! I would like to do band structure calculations of perovsikites materials with quantum espresso. For this I installed the Intel Fortran compiler. This is what I get when I run the...
08 July 2024 1,207 0 View
Hi, I am trying to model laser cladding in Ansys FLUENT. There are two phase: one is base metal surrounded by an inert gas (shown in the image). I want to add a cladding layer of the same metal....
07 July 2024 1,182 8 View