Md.Akibul Islam

20 Questions 19 Answers 0 Followers

Questions related from Md.Akibul Islam

How can we achieve a PDMS thickness of less than 5 micron using spin coating?

We are trying to spin coat PDMS on a Si substrate to achieve PDMS thickness of less than 5 microns.

24 July 2021 4,217 4 View

What are some of the optically transparent elastomers (except PDMS)?

I am trying to prepare transparent thin film from elastomers. For this application, the elastomer must be optically transparent.

14 April 2021 8,385 5 View

What is the best substrate for exfoliating few layers of hexagonal boron nitride (hBN) using traditional scotch tape method?

Unlike graphene, it is usually very difficult to exfoliate few layers (~10 nm thick) of hBN on SiO2 substrate due to lip-lip interaction at the edges. Au substrates have been proven very useful...

17 February 2021 2,920 2 View

How to make few mm (~4-5 mm) thick Poly(methyl methacrylate) film?

Hi, I'm aware that thin film of PMMA can be spin coated. But I'm more interested in making few mm thick PMMA which will act as a substrate. Please share your expertise on how this can be...

22 November 2020 4,674 10 View

Can the band gap of Graphene be calculated using raman Spectra in case of few layer graphene flakes?

I'm wondering if I can measure the band gap of my graphene sample if it is not single layer, but few layers

07 March 2020 2,756 9 View

How can I avoid the wrinkling of monolayer hBN onto Silicon substrate while annealing?

I'm trying to transfer a monolayer of CVD grown hBN from Cu foil to a target substrate ( in this case, a Si substrate with micro wells. )To improve the adhesion between hBN and So substrate, I'm...

07 February 2020 8,078 1 View

How to transfer a CVD grown monolayer of hBN from the Cu foil to a polymer substrate?

i am looking for ways to transfer hBN nano sheets from the Cu foil used in the CVD process to a polymer substrate (PDMS or PMMA)

29 January 2020 6,839 7 View

Can anyone please provide me any evidence of using CVD grown graphene for heavy metal removal from water?

I am looking for a potential application of CVD grown graphene. I am wondering if there is any literature on it. Almost all the literature on heavy metal removal from water is with Graphene Oxide....

01 July 2019 3,877 3 View

How to estimate the number of atoms per unit surface area of a fresh crystal surface exposed to a pressure of 10^-9 MPa?

Crystal Structure

26 March 2019 4,262 2 View

What kind of shifting of the peak position (in the Raman spectra) of the G (1590/cm) is observed when graphite is exfoliated in few layer graphene?

I am asking a technical question regarding the Raman spectra of graphene

08 October 2018 3,432 4 View

Will the intensity of G band(magnitude) in bulk Graphite be same as the intensity of the G band exfoliated from that same graphite powder?

Graphene Exfoliation

11 May 2018 4,777 3 View

Will it matter if I use 632nm laser excitation (Raman Spectroscopy) instead of 532nm excitation to characterize Graphene?

Dear Scholars, I am trying to characterize the Graphene I exfoliated using Raman. Literature indicates that 514-532 nm laser excitations were used for almost all cases. Unfortunately, in my...

07 May 2018 7,807 7 View

Can anyone please provide me the Raman spectra of a mono/few layers 2D hBN flake/film?

I am looking for a Raman spectra of 2D hBN flake/film. The film can be mono/few layers. But I need the intensity value of D,G and 2D peak. Thank you for your help.

17 April 2018 1,443 3 View

Dear scholars, is there any solvent which if mixed with NMP, will bring down the boiling temperature of NMP?

I want to evaporate NMP (N-methyl-pyrolidone). But its' boiling point is really high and it polymerizes at the boiling temperature. I am looking for solvents which if mixed with NMP, will bring...

02 April 2018 2,887 3 View

I have Grpahene dispersed in NMP. What are the protocols to vacuum dry the Graphene in a vacuum oven(i.e. to evaporate the NMP)?

In our method, we exfoliate Graphene into NMP. Now I want to isolate Graphene flakes by evaporating NMP from it

06 February 2018 7,599 3 View

Why resistive switching memory devices(ReRAM) have not become popular despite showing great promises over conventional RAMs

I am interested to know why ReRAM is not yet used. It's been in the academia for almost 10 years. Still very few people work on that.

01 January 1970 4,436 13 View

Is it possible to get a job in semiconductor industry if I have doctoral research experience in memory devices (ReRAM)?

I am looking forward to hearing from experts in semiconductor industry

01 January 1970 9,118 2 View

Measuring mechanical properties of two dimensional (2D) hetero-structures

2D hetero-structures are finding numerous applications in energy storage, flexible electronics and nano-composites. But there has not been much experimental work in investigating the mechanical...

01 January 1970 5,743 3 View

Two Dimensional Hetero-structures

What are the most useful mechanical applications of two dimensional heterostructures? And what are the most efficient 2D heterostructure systems for flexible electronics?

01 January 1970 2,926 2 View

Why there has not been much study on the mechanics of 2D hexagonal boron nitride?

I'm just wondering why the 2D material community ignored to study the mechanical properties of hBN elaborately unlike graphene

01 January 1970 7,573 4 View