Mukesh Pandey

22 Questions 27 Answers 0 Followers

Questions related from Mukesh Pandey

Why is the response of graphene under strain different to the other centrosymmetric TMDCs?

Is the anisotropic behavior of graphene, owing to asymmetrical strain distributions and asymmetric Poisson's ratio, the only reason for the opening or increment of band-gap at the Fermi level,...

30 March 2022 9,416 0 View

Does polymer encapsulation increase the interfacial shear strength of 2D materials?

Please explain.

19 June 2021 7,871 2 View

Why does the Raman spectrum of Poly vinyl alcohol (PVA) polymer thin coating shift upwards suddenly on heating it at 200 degree Celsius?

The baseline of PVA jumps suddenly towards higher intensity (on the Y axis) on reaching 200 degree Celsius.

08 June 2021 9,047 13 View

What is the effect of polymer encapsulation of 2D materials on its effective adhesion energy?

The substrate to 2D material interaction has its impact on the adhesion properties, so the adhesion energy measurements have been carried out for 2D materials lying over different substrates. The...

31 May 2021 4,529 1 View

What is the Poisson's ratio of single-crystalline multi-layer graphene ?

Poisson’s ratio is the ratio of transverse contraction strain to longitudinal extension strain in the direction of the stretching force.

27 May 2021 10,091 5 View

What is the gruneisen parameter for Graphite under biaxial strain?

The Gruneisen parameter is a very important parameter for validating the strain response in graphene and graphite.

25 May 2021 2,586 4 View

Raman spectral resolution versus the minimum shifting in the Raman peaks?

Raman spectral resolution of 1.65 cm^-1 is obtained while using the 600 lines per mm grating in the spectrometer; in this condition can we compare and analyze the Raman peak shifting trends with...

19 May 2021 2,436 10 View

Given the volume of ellipsoidal water droplet and the inter-facial contact angle (measured by Goniometer); How to find out the height of the droplet?

How to find out the height of the ellipsoidal water droplet at the center, when its volume and contact angle with the substrate is given. (Ignoring the evaporation of water droplet with time)

19 April 2021 3,663 2 View

How to bond PDMS film to PMMA polymer layer by heating?

Polymer gets softened at glass-transition temperature (Tg), so the bonding of two polymeric layers is possible. What are the operating procedures for thermally bonding PDMS to PMMA?

05 February 2021 3,353 8 View

Is it possible to find out the wettability and contact angle of water on the rough or corrugated substrate?

First of all, whether it is possible to identify the presence of water and its amount on the Silicon substrate by using only FT-IR spectroscopy. Can ATR-FTIR spectroscopy find out the wettability...

04 February 2021 9,449 4 View

How to make CAB/PMMA polymer blend?

I need to synthesis CAB/PMMA polymer blend. Please tell me how to do it.

20 October 2020 10,037 3 View

Why is there splitting in Raman bands with symmetry lowering?

I have encountered the splitting of Raman bands (especially G band in G+ and G- peaks) while characterizing graphene under strain using Raman spectroscopy.

03 September 2020 6,967 3 View

Which phenomenon is responsible for showing unusual PL Spectra of a 2D material based hetero-structure in view of inter-layer coupling?

Shift in PL emission peaks of SL- WS2 and SL-MoS2 is observed individually under applied strain but due to inter-layer coupling WS2/MoS2 hetero-structure does not show Excitonic behaviour...

28 August 2020 4,618 3 View

How to make PDMS film (or stamp) in the laboratory in order to use it for dry transfer of thin films (< 1 mm) (pick-up and release technique)?

Polydimethylsiloxane (PDMS) stamp is used for the deterministic placement of 2D materials and the fabrication of van der Waals heterostructures.

23 December 2019 9,252 3 View

Why does the quenching of PL intensity occur in Graphene/MoS2 hetero-structure?

Can you explain in a more practical point of view?

13 September 2019 10,421 3 View

How can I increase the Responsivity of Graphene ?

Responsivity is a measure of the electrical output per optical input.

21 April 2019 9,688 7 View

Which technique (reported till date) is proved to be the best in order to get "Direct CVD grown Graphene" of high crystalline quality on an Insulator?

Is there any better technique relative to one reported by Kwon and co-workers, The interfacial segregation growth technique using Graphite powder coating on a poly-crystalline Ni layer (deposited...

14 February 2019 8,443 3 View

Do the properties of bernal stacked bilayer graphene exactly match with the mechanically stacked (AB_AB like) bilayer graphene ?

Is the processes of stacking the monolayers mechanically and exfoliating a bernal stacked multilayer graphene to yield a perticular microstructure "reversible" in terms of optical and electrical...

01 February 2019 8,535 4 View

Can a Bilayer graphene show the electronic structural properties as that of an isolated monolayer graphene?

Is there a way, to get the same electronic structure of the Bilayer graphene and isolated monolayer graphene?

18 January 2019 4,735 7 View

How can we explain the concept of isospin and real spin in the graphene?

Degeneracy of electrons in graphene is 4. 2 for isospin and 2 for real spin. How do we get the degeneracy here?

01 January 2019 8,429 4 View

Do you think that Doped Graphene can replace the Silicon based Electronics? Argue on scientific aspects.

Graphene Electronics Vs Silicon Electronics !! Silicon has a band gap of 1.1 eV but graphene is zero band gap semi metal. Therefore graphene has a very less scope in achieving the goal. Further,...

01 January 1970 7,077 3 View

Up to what extent, the mechanical strains applied on 2D materials are helpful in order to increase the efficiency of Gas-sensors?

Explain this in context of 2D materials as applicable for gas sensing.

01 January 1970 8,017 0 View