Subrata Ghosh

12 Questions 150 Answers 0 Followers

Questions related from Subrata Ghosh

What are the criteria/physical properties to chose positive and negative electrode for asymmetric supercapacitor?

To fabricate asymmetric supercapacitor, what should be the properties of metal oxides/hydroxides, polymers to select them as positive or negative electrode? For example, MnO2 used as positive as...

12 December 2017 2,753 2 View

Several issues on Researchgate. What you think regarding that?

In my two years of experience in RG, I have seen several issues, which I don't like at all. May be that is my personal issues, but what you think regarding the following issues? First, In...

07 July 2014 7,519 4 View

Dissolving of PMMA layer

Is there any method to completely dissolve the PMMA layer?

01 January 1970 1,037 7 View

Raman Spectroscopy of graphene.

'For n-LG , we have n2 (square of n) DR processes' according to Annu.Rev.Condens.Matter Phys.2010.1:89-108. But Physics Report 473 (2009) 51-87 : for 3-LG , ''one should model the DR Raman...

01 January 1970 8,680 4 View

Which one is the appropriate to use among wavenumber and Raman shift for the Raman spectra?

In the existing literatures, some authors labelling X-axis as Raman shift and others as wavenumber for the Raman plot. Which will be the appropriate to use. Is their any difference between these...

01 January 1970 1,547 4 View

Does thermal conductivity depend on the orientation of plane of the substrates?

To be specific, what is the thermal conductivity of Si[100] and Si[111]? Are they the same? If not, can someone explain with references? Thank you, in advance.

01 January 1970 7,373 9 View

Is it possible to get n-type carrier in the film although XPS result doesn't show any nitrogen peak?

The film are grown using PECVD by CH4/Ar/N2 composition. XPS spectra of as grown film is not showing any N-peak, whereas Hall measurement confirmed the n-type carrier concentration. How to explain...

01 January 1970 1,389 11 View

How the mass of carbon nanowalls/vertical graphene can be calculated for specific capacitance measurement?

Carbon nanowalls/vertical graphene grow vertically on substrates. To calculate the specific capacitance from cyclic voltammetry measurement, I wanted to know how the mass of the samples can be...

01 January 1970 5,366 2 View

What is the difference between vacancy-like defects and hopping defects?

In the article "Probing the nature of defects in graphene by Raman spectroscopy" [Nano Lett., 2012, 12 (8), pp 3925–3930], the author mentioned that ID/ID' is the measure of nature of defects. If...

01 January 1970 10,163 2 View

How do you calculate wall density of carbon nanowalls/vertical graphene?

Please see the attached image. Can anyone tell me how wall density can be calculate? Simple "ImageJ" can be use for that, after choosing the area and one can count manually. Is it the only way? I...

01 January 1970 7,548 4 View

How can I subtract the background of C-K edge EELS ?

I want to quantify sp2 content and sp3 content from the C_K edge EELS of probed volume of the sample. Can anyone suggest that how to subtract the background from the spectra? Thanks, in advance

01 January 1970 1,831 5 View

How do I get a charge discharge curve for fixed potential window in autolab instrument with nova software?

In capacitor charge discharge, set repeat no. followed by set current (charging and discharging). Potential value in record signal-cut off > 1 for charging current and

01 January 1970 1,556 12 View