Platform for anything related to graphene; its synthesis and applications | Contact experts in Graphene to get answers
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Questions related to Graphene
Usually, it can be assumed that with increasing carbon content the temperature for the onset of residual stress relaxation is lowered and the recovery rate increases. (What is the reason?)
05 December 2022 8,113 4 View
I am using a 2 year stored graphene oxide nanoparticle. There is a problem with my results . I wanna know if this can be related to nanoparticle shelf life? Dispersion is done by ultrasonic bath...
04 December 2022 6,911 1 View
Reduced Graphene Oxide (rGO) from Graphite Oxide (GO)
02 December 2022 1,283 0 View
AssalamoAlaikum Hello Everyone hope you are doing well. Yesterday I received an email from my supervisor in which he mentioned that to make a new proposal on the Topic of CO2 storage/capture as...
30 November 2022 685 6 View
I would like to ask about the best conditions of sonication of graphite oxide in terms of apparatus (probe or bath), time and power in order to effectively exfoliate the graphite oxide without...
30 November 2022 2,819 1 View
Same publications says that C2N-h2D crystal rather than only C2N
28 November 2022 2,194 2 View
It is an easy question but the answer could help me a lot. I am going to make the electrodes for a lithium ion coin cell. I want to know what are the necessary steps to clean the aluminum and...
26 November 2022 2,566 5 View
I was trying to calculate opt freq uwb97xd/lanl2dz geom=connectivity iop(6/81=3) for a neutral molecule after running. I got an error saying Unable to calculate Dipole derivatives. Why is this...
23 November 2022 3,364 2 View
Can anyone please help me how to do convergence test for K-points, meshcutoff, lattice parameters in SIESTA and also if you are comfortable please share some infput files related to it. Thanks...
17 November 2022 6,657 3 View
Hi dear friends I've faced a problem. working on garnet-type All-Solid-State lithium-ion batteries, I carried out a Raman test on Li7La3Zr2O12 solid-state electrolyte with two different...
15 November 2022 2,820 2 View
Sometimes it's reported brownish in colour. I would like understand the reason for the colour formation.
08 November 2022 4,594 4 View
I have synthesized Graphene Oxide according to Improved Hummer's method. But after adding hydrogen peroxide and water some black particle (graphite particle) have shown as precipitate with dark...
07 November 2022 7,827 0 View
I have fabricated a binary 1D photonic crystal structure. By which technique I can introduce a defect layer (air) in the middle of the structure. I want to use the defect-based structure for...
07 November 2022 2,567 2 View
For running calculation with van der waal interactions between two layers, should I use gga pseudopotentials or van der waal interactions pseudos? If I use van der waal xc in siesta scf run, will...
07 November 2022 2,163 2 View
please someone elaborate this?
06 November 2022 4,446 1 View
Using the Boltztrap and Quantum espresso I was able to calculate the electronic part of thermal conductivity but still struglling for the phononic part of thermal conductivity. I tried the...
03 November 2022 2,888 6 View
I can't find a paper where they do it, I thank you for the help!
31 October 2022 4,053 2 View
Hello. I want to simulated polymer based coating material. I did a lot of searching, but the methods I found didn't work. So I ask a few questions here. 1. I found the simulation methods using...
25 October 2022 2,240 1 View
I want to reduce the size of the graphite charcoal from micro size to nano size for that, I decided to use the ball milling equipment. Because of sample is powder, they need a cooling medium for...
20 October 2022 7,740 6 View
Software such as Mirage, Remcom's XFdtd software, OmniSim, etc. exists. but which one is the best for various purposes, for example thermal simulation, acoustic simulation, structural analysis...
19 October 2022 1,733 5 View
I am using double beam Jasco V-670 spectrophotometer to measure the transmittance of some thin film samples . first I put to two bare glass substrates(one in the reference position and the another...
12 October 2022 9,396 6 View
For a 1D system, there is a way to calculate the Zak phase in the discrete form. Suppose C is some closed path in k-space (a 1D BZ). If we suppose the path is discretized into (not necessarily...
12 October 2022 6,645 1 View
Is there any file we can use to find HOMO-LUMO after SIESTA (or) Transiesta Calculation.
10 October 2022 5,945 2 View
Dear all, After my Fe3O4 nanoparticles were modified with TOES, the water dispersibility was thus greatly improved. But when I modified APTES on the surface of Fe3O4@SiO2, the water dispersibility...
08 October 2022 7,737 4 View