Weight difference of graphene vs copper?

In summary, graphene is a superior conductor compared to copper and can carry the same amount of current while being much lighter. To compare their weight difference, you can calculate the specific resistivity by dividing resistivity by density, similar to specific strength. However, copper is still used as bus bars due to its lower cost/kg compared to graphene.
  • #1
Dash-IQ
108
1
I know that graphene is a far more superb conductor than copper, but I'm trying to compare their weight difference. I mean, let's take an example: A copper busbar that is 7kg with resistance of 2 micro-Ω can carry a lot of current(in kA), I assume a much lighter(possible less than a kg) graphene conductor can conduct the same current range and is much much lighter?

Trying to grasp more about this amazing material.
 
Engineering news on Phys.org
  • #2
You want specific resistivity: divide resistivity by density.

This will give you a resistivity to weight ratio much like specific strength:


http://en.wikipedia.org/wiki/Specific_strength


If you divide resistivity by cost/kg you'll see one reason why copper is used as bus bars rather than graphene...
 

What is the weight difference between graphene and copper?

The weight difference between graphene and copper is significant. Graphene is the lightest material known to man, with a density of only 0.77 milligrams per square meter. Copper, on the other hand, has a density of 8.96 grams per cubic centimeter, making it much heavier than graphene.

Why is graphene so much lighter than copper?

Graphene is lighter than copper because of its unique atomic structure. It is made up of a single layer of carbon atoms arranged in a hexagonal lattice, making it incredibly thin and lightweight. In comparison, copper is made up of multiple layers of atoms, which contribute to its heavier weight.

How does the weight difference between graphene and copper affect their properties?

The weight difference between graphene and copper greatly impacts their properties. Graphene's lightweight nature makes it incredibly strong and flexible, while copper's weight gives it high thermal and electrical conductivity. This is why both materials have different applications in various industries.

Can the weight difference between graphene and copper be measured?

Yes, the weight difference between graphene and copper can be measured using various techniques such as atomic force microscopy, X-ray diffraction, and Raman spectroscopy. These methods can accurately determine the weight and thickness of graphene and copper samples.

Are there any potential applications that take advantage of the weight difference between graphene and copper?

Yes, there are several potential applications that take advantage of the weight difference between graphene and copper. Graphene's light weight makes it suitable for use in lightweight and flexible electronics, while copper's weight makes it ideal for structural components in buildings and vehicles.

Similar threads

  • Materials and Chemical Engineering
Replies
1
Views
1K
  • General Engineering
Replies
14
Views
2K
  • Electrical Engineering
Replies
5
Views
1K
Replies
1
Views
1K
  • Electrical Engineering
Replies
13
Views
2K
  • Introductory Physics Homework Help
Replies
19
Views
4K
Replies
2
Views
1K
  • Introductory Physics Homework Help
Replies
4
Views
6K
Replies
6
Views
799
  • Engineering and Comp Sci Homework Help
Replies
4
Views
2K
Back
Top