Shahran Ahmed Joy

9 Questions 15 Answers 0 Followers

Questions related from Shahran Ahmed Joy

How to choose proper fitting parameters of a Optical Material in Ansys FDTD?

I was trying to fit the optical data of a material in Ansys FDTD. When I used imaginary weight 1, fit tolerance 0, and max coefficient 16, the fitted graph appeared as Figure 1 and 2...

08 December 2024 8,887 2 View

How to calculate Power density map of a thin film by using monochromatic source in a Lumerical FDTD simulation?

Hello everyone, I have recently started learning about FDTD simulation. While refabricating the simulation results of a paper, I saw that they had analyzed the power density maps using a...

08 April 2024 3,367 2 View

Can anyone help to download Copper (II) Oxide (CuO) cif file for Ritveld Refinement?

Hi, I am having trouble downloading the Copper (II) Oxide (CuO) cif file (Space Group: C2/C) from the Crystallographic Open Database (COD) for Rietveld refinement. Can anyone please help me to...

09 December 2023 9,235 4 View

Why are DFT+U tags ignored in Quantum Espresso?

Hello, I was trying to relax a structure of BiVO4 using PBE pseudopotentials by using Quantum Espresso. But, after being finished the calculation, the starting of the output is given...

25 May 2023 4,602 3 View

Is negative frequency modes in phonon always indicates structural instability?

Dear all, I was trying to calculate a double perovskite's phonon band structure and density of States using VASP and Phonopy. After the calculation, the result shows that there are quite a lot of...

17 May 2022 469 5 View

How to solve "Ifort not found in VASP compilation via mpiifort"?

I am facing this problem in VASP 6.1.0 compilation with mpiifort: if [ ! -d build/std ] ; then mkdir build/std ; fi; \ cp src/makefile src/.objects makefile.include build/std ; \ make -C...

07 December 2021 3,200 5 View

What is the suitable solvent for bulk perovskites to determine bandgap using UV spectroscopy?

Hello everyone, I am trying to perform UV spectroscopy on doped and undoped bulk SrTiO3, but I am having trouble finding the band gaps. The absorbance graph doesn't come as intended. I have tried...

07 April 2021 8,214 6 View

Can anyone tell how to simulate ferroelectric properties using VASP?

Hello,I have just started learning simulations using VASP.But as a newbie, I am having trouble to find out the simulation process for finding out ferroelectric properties(ferroelectric...

21 August 2020 1,693 0 View

Does impact factor play any major role on any B.Sc/M.Sc student's application for phd?

I have just completed my B.Sc(Engineering) in EEE from University of Dhaka. I have some research experience (both theoritical and practical). I am preparing to publish some of the works I had done...

01 January 1970 2,785 4 View