Author Topic: Volume of a graphene sheet  (Read 4389 times)

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Offline sitangshu

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Volume of a graphene sheet
« on: February 15, 2013, 08:37 »
Hi,

      Can you let me know how to calculate the volume of a single layer graphene sheet with 3 um and 2 um as length and breadth?


Thanks is advance!

Offline Anders Blom

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Re: Volume of a graphene sheet
« Reply #1 on: February 15, 2013, 10:01 »
The volume of a sheet, or any 2D object, is zero.

Offline sitangshu

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Re: Volume of a graphene sheet
« Reply #2 on: February 15, 2013, 10:41 »
Dear Dr. Blom,

                  I understand. In such case how to find heat capacity (units: J/K) of an SLG sheet knowing that specific heat (Unit: J/Kg-K) is known? (The specific heat of an SLG sheet is about 225 J/Kg-K at 300 K).

Offline Anders Blom

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Re: Volume of a graphene sheet
« Reply #3 on: February 15, 2013, 10:43 »
Looking at the units alone, I'd say by multiplying with the weight?

Offline sitangshu

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Re: Volume of a graphene sheet
« Reply #4 on: February 15, 2013, 11:25 »
To get heat capacity (Unit: J/K) one has to multiply the specific heat (Unit: J/Kg/K) by mass of the substance. What could be the mass of a 3 um X 2 um SLG sheet?

Regards.

Offline Anders Blom

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Re: Volume of a graphene sheet
« Reply #5 on: February 15, 2013, 13:45 »
What could be the mass of a 3 um X 2 um SLG sheet?

http://en.wikipedia.org/wiki/Graphene says "a 1-square-meter sheet [of graphene weighs] only 0.77 milligrams". You can compute it from there.