Messages

1

Scripts, Tutorials and Applications / Re: Puzzle about the I-V characteristics of bilayer graphene compared with monolayer

« on: January 16, 2012, 20:54 »

Thanks for your reply, I am going through that paper. But how can we realize bulk structure of graphine on silicon sturucture. How do we generally convert fro bulk configuration to mass configuration.

2

Scripts, Tutorials and Applications / Re: Puzzle about the I-V characteristics of bilayer graphene compared with monolayer

« on: January 16, 2012, 20:43 »

Hi Anders,

Thanks for your reply .I am going through this paper they have created a bulk graphene on si structure. Can I create something like this, isn't it like we have only use the bulk structure available in database. Can we repeat the unit structure to supercell. I am just new to this software. Actually I have just stated my graduate program and I am assisting my lab mates who are working on a device in which graphene is placed on Si(already fabricate). Now we want to study effect on optical properties( absorption of light) of device after placing graphene on top.

Thanks

3

General Questions and Answers / Re: Simulation and study opticals effects of graphene on different substares

« on: January 16, 2012, 19:08 »

Please can somebody help me in this?

4

General Questions and Answers / Re: how to analysis the band structure of B-doped armchair graphene ribbons

« on: January 16, 2012, 18:12 »

Hi ,
Can u please tell me how did you do doping of graphene layer.

5

Scripts, Tutorials and Applications / Re: Puzzle about the I-V characteristics of bilayer graphene compared with monolayer

« on: January 16, 2012, 12:51 »

Thanks for the reply.I am very much confused about how to decide the number of k points needed as they seemed to be the most important part of the calculation. I want to study effects of graphene layer placed on different kind of substrates(e.g SiC, GaAs, Si). How can we do such kind of epitaxial simulation in quantum wise.

6

Scripts, Tutorials and Applications / Re: Puzzle about the I-V characteristics of bilayer graphene compared with monolayer

« on: January 16, 2012, 12:22 »

Hi ,
i have a quick qusetion for you.I am a new user of quantumwise.How to make bilayer or monolayer graphene ,is it done by starting from a graphene sheet(not ribbon) and repition in A direction two times. I want to study effect of graphene bilayer placed on different kind of substrates.

7

General Questions and Answers / Simulation and study opticals effects of graphene on different substares

« on: January 16, 2012, 02:34 »

I am new to this forum. Quantumwise is a nice simulation software and very informative too. I am just curious can we do epitaxially (layer by layer) grown nanodevice simulation on this. For e.g I want to study if we place a graphene layer on top of Si or Sic . How will it change the light absorption capacities and optical spectrum of graphene or silicon.One more question , how do we decide the sampling points.