Md.Akibul Islam

45 Questions 28 Answers 0 Followers

Questions related from Md.Akibul Islam

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)

01 January 2020 2,297 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....

07 July 2019 7,179 2 View

Can anyone please provide me with a paper or book regarding the basic nucleation process of graphene on Ni substrate?

I am trying to learn how nucleation of graphene actually happens on a Ni substrate.

06 June 2019 3,868 3 View

Why the intensity of the XRD of CdS changes when I use Ni anode instead of Cu?

XRD analysis of CdS

03 March 2019 1,683 4 View

Why the position of the XRD peak of CdS changes when I use Ni anode instead of Cu?

XRD

03 March 2019 531 1 View

Is it possible to probe the conductivity of exfoliated graphene using scanning probe microscopy (i.e. cAFM) ?

I am trying to measure the conductivity of exfoliated graphene nano sheets using conductive atomic force microscopy

01 January 2019 6,821 4 View

How much energy is required to peel of a single layer graphene from bulk graphite (using liquid exfoliation)?

Graphene Exfoliation

12 December 2018 5,507 0 View

How to calculate the number of layers in nano sheets of the exfoliated MoS2 from it's UV ViS spectra?

I am trying to estimate the number of layers present in exfoliated 2D MoS2 nano sheets from it's UV ViS spectra

11 November 2018 5,434 2 View

How to calculate extinction from absorbance/tranmittece?

I am trying to measure the extinction of a solvent which contains nanomaterials.

10 October 2018 5,949 4 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

10 October 2018 2,566 2 View

Should the intensity of G peak ( Raman spectra) increase as the graphene nano sheets become thinner and thinner?

I am trying to find out a relation between the G peak and thickness of graphene.

09 September 2018 7,603 0 View

Will the graphene flakes (dispersed in Water-Sodium Cholate) aggregate if I evaporate the solution to increase concentration of graphene?

I have graphene dispersed in 500mL Water-SC solution. I am trying to make ink out of it. To increase the concentration, I am planning to evaporate the solution to 50-70 mL. Will the individual...

09 September 2018 3,350 5 View

Why does the intensity of the G peak(1590/cm) change as the graphene nano sheets become thinner ?

I knew that the 2D peak(2650/cm) of the Raman spectra of graphene changes as the graphene nano sheets become thinner. But I am observing that the G peak is also changing. Can anyone please explain...

09 September 2018 6,867 4 View

Why do the larger exfoliated graphene flakes have higher ID/ID' than the smaller flakes?

I am size selecting the graphene produced in the lab. While performing Raman analysis, I am finding that the larger flakes have a greater ID/ID' than the smaller flakes. Could anyone please...

09 September 2018 3,242 4 View

Why do the larger exfoliated graphene flakes have higher ID/ID' than the smaller flakes?

I am size selecting the graphene produced in the lab. While performing Raman analysis, I am finding that the larger flakes have a greater ID/ID' than the smaller flakes. Could anyone please...

09 September 2018 7,598 3 View

How do you rate an Asst Professor with 350+ citations in 5 years?

looking for recommendation

08 August 2018 9,716 2 View

Can anyone please share a latest review paper on resistive memory devices?

ReRAM

08 August 2018 7,799 0 View

Is it really possible to make economically feasible transistor less than 7 nm?

Before, scientists believed that a transistor less than 5 nm will face the problem of quantum tunneling. But IBM recently made a 5 nm transistor.

08 August 2018 4,432 1 View

Is the resistive/non-volatile RAM is a dead concept?

I want to know the future prospect of resistive/NV RAM

07 July 2018 3,843 0 View

Why defect study is important in graphene?

Graphene

06 June 2018 7,428 0 View

What are the things can be interpreted from the electron diffraction pattern of graphene nano sheet?

graphene-TEM

06 June 2018 7,801 0 View

Can anyone please tell me the grade and vendor of graphite powders(preferably in US) with very low defect?

I am working on a project where defect analysis of exfoliated graphene is very important. I am looking for very low defect graphite powders ( 1-10 micron grain size) which I will use to synthesis...

06 June 2018 8,660 1 View

What is the significance of the ratio of D to G peak in the Raman spectra of mono/few layered graphene?

Raman spectra of Graphene

06 June 2018 3,033 4 View

What is the significance of the ratio of 2D to G peak in the Raman spectra of mono/few layered graphene?

Raman spectrum of Graphene

06 June 2018 9,745 2 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

05 May 2018 5,391 4 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...

05 May 2018 1,072 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.

04 April 2018 2,910 4 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...

04 April 2018 8,674 3 View

Is there any D peak for 2D Hexagonal Boron Nitride while observing Raman Spectra?

I am trying to get a Raman spectrum for 1D hBN nanosheet. But I am only getting a G peak. There is no D peak. How is it possible? Thanks

04 April 2018 5,399 0 View

What is the value of surface energy of 2D Hexagonal Boron Nitride nanosheet?

I am looking for the surface energy of 2D hBN

04 April 2018 3,679 2 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

02 February 2018 4,569 4 View

Dear scholars, what is the ASTM standard for the flammability test of polymer films? (i.e flame specification, flame temp etc) ?

I want to perform flammability test of a polymer film.

02 February 2018 3,569 3 View

Dear scholars, what is the ASTM standard for the vertical flame test of polymer films(my polymer is PVC)?

ASTM

02 February 2018 6,563 0 View

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

I have Graphene dispersed in NMP. I want to dry the NMP to get Graphene flakes

12 December 2017 6,921 1 View

Hi, how do I transfer Graphene from NMP to IPA using filtration process? I usually have little gr on the filter and also NMP remains on the filter?

I have graphene dispersed in NMP. Now I want to transfer the Graphene into IPA/Water. Vacuum filtration is the process I am using. But when I filter it, there is too little Graphene on the filter...

10 October 2017 3,792 2 View

I have Graphen dispersed in NMP. Now I want to measure the concentration of Graphene which includes drying NMP in an oven. How do I do that?

NMP polymerizes while drying. I tried to dry it at 150oC. But it polymerizes. how do I avoid this polymerization?

09 September 2017 9,828 5 View

I have graphene dispersed in NMP. Now I want to measure the concentration of graphene by drying he NMP. But the NMP polymerizes. how do I avoid that?

I tried drying at 150oC. But I can not avoid polymerization.

09 September 2017 852 3 View

AFM of 2D BN nanolayers

When I am doing AFM , I am seeing big particles in the image. How do I get rid of it? I am trying to image 2D BN nanolayers. I need to have some better image of mono/few layers of BN. Thanks

07 July 2017 9,317 4 View

The question has been answered. Thank you

. Thank you

01 January 1970 7,776 10 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 440 9 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 1,722 2 View

Does the Intensity of the G (1590/cm) peak (in the Raman spectra) increase as the graphene flakes become thinner (i.e less number of layers)?

Raman spectra of graphene

01 January 1970 8,614 2 View

Why do the larger exfoliated graphene flakes have higher ID/ID' than the smaller flakes?

I am size selecting the graphene produced in the lab. While performing Raman analysis, I am finding that the larger flakes have a greater ID/ID' than the smaller flakes. Could anyone please...

01 January 1970 6,459 0 View

What are the challenges in fabricating a graphene based FET sensors for the detection of metal ions in liquid?

Although, graphene based FETs provide a label free, fast and portable mean of detecting heavy metal ions in liquid (i.e. water, blood etc.), there has not been a huge development on this. Why is that?

01 January 1970 1,032 1 View

Why is compositionally graded electrolytes not common in fuel cell applications?

Electrolyte/Electrode/SOFC

01 January 1970 4,194 2 View