Refractive index of multilayer graphene in optical wavelength?

More Reza Hekmati's questions See All

What is the concept of graphene's relaxation time and its relation with doping?

Is it right when doping of graphene increased, its relaxation time decreased? if there is a formula, let me know about that.

07 August 2014 5,848 4 View

How can I find permittivity of p-doped silicon?

Looking for optical parameters (like permittivity or refractive index) of p-doped Si. I checked refractiveindex.info and Palik's book but found nothing.

02 March 2014 8,973 3 View

How to find propertiies for palladium, titanium, gold, etc. in THz frequency?

I am referring to optical parameters like permittivity and refractive index

09 October 2013 5,664 1 View

Random Phase Approximation (RPA) for Graphene - can anyone help?

I need a book or article which could explain in details this theory for graphene.

09 October 2013 894 4 View

Fermi energy of intrinsic and doped graphene?

Is there any formula to explain the fermi energy of graphene?

09 October 2013 3,511 4 View

Fabricating a pt-porous si schottky diode as a gas sensor?

I fabricated a pt-porous si schottky diode as a gas sensor. Adjacent to NO2 or NO gases I expected to have a low breakdown voltage (in constant current) or high current (in constant voltage) due...

08 September 2013 275 6 View

Effects of strain on graphene nanoribbons?

If we model FET by source, gate and drain capacitors, when strain is applied how will its capacity will change?

08 September 2013 8,491 3 View

ZnO parameters?

In order to simulate nanowire ZnO based devices, I want to use effective DOS of both electron and hole. I also need its electron affinity. Unfortunately I could not find any thing about mentioned...

08 September 2013 5,277 3 View

What is generation and recombination formula?

I want to apply it in continuity equation

07 August 2013 3,528 3 View

Graphene mobility

Papers just talk about graphene surface horizontal mobility but what about its vertical mobility? (I mean perpendicular to its surface) Does it play an important role in bipolar transistor?

04 May 2013 2,224 10 View

How to increase citation in Research Gate?

How to enhanced h-index in Research Gate?

04 August 2024 3,368 4 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

H-index issues?

Hi Sir/Madam, I would like to know why my h-index is stuck to 15 despite the number of new publications added. Could you explain me how marks are granted. Best, Daniel

28 July 2024 2,607 2 View

BD Cell Viability Kit - TO evaporation?

Hello, I'm conducting flow cytometry experiments using the BD Cell Viability Kit and I've noticed that the TO solution ends much faster than the PI solution. I store the solutions according to...

22 July 2024 2,257 0 View

Refractive index in the W-band (75-110 GHz) of some material (Teflon - PTFE) ?

08 July 2024 9,140 1 View

Graphene and graphene oxide as cancer factor?

Please, can any one inform us about risks of graphene and graphene oxide as a factor of cancer growth?

28 June 2024 6,815 4 View

QUESTIONs about Annexin V/ PI apoptosis experiment: Are these pictures acceptable?

I am evaluating the apoptosis of two types of cells, which are derived from primary mammalian cells (fibroblasts). When I use the Annexin V/PI method, the image I get is like this. It seems not...

17 June 2024 5,570 1 View

How to eliminate imaginary phonon frequency in phonon dispersion of Coved Graphene Nanoribbons?

Dear all, I want to calculate the phonon dispersion of 4CNR-1-0 (structure is in Fig. 2 (b) in this article Designing coved graphene nanoribbons with charge carrier mob... ) and then calculate...

17 June 2024 6,911 2 View

Do we need a femto laser for good LIG?

Do we really need a femtosecond laser for Laser-induced graphene(LIG) production on polymers? Other than better resolution and lesser thermal damage is there any other advantages?

13 June 2024 5,294 0 View

Roman Kubrin

J. W. Weber, V. E. Calado and M. C. M. van de Sanden. Optical constants of graphene measured by spectroscopic ellipsometry, Appl. Phys. Lett. 97, 091904

Reza Hekmati

Dear Roman,

Thanks. I checked and it was related to just one layer. My question is about multilayer graphene's refractive index in near 1.55 um.

I assume that with addition of further layers it will simply approach the properties of graphite

yes, I guess so. your description will help me. but in parallel I'm searching for its formula or experiment data.

Zhihong Li

Dear Hekmati, I'm also searching for the refractive index of few layer or multilayer graphene. Could you please help me? Thanks.