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New insight into graphene

Date:
February 18, 2016
Source:
Lancaster University
Summary:
Physicists have discovered how electrons travel through the novel 2D material graphene. Graphene is a one atom thick supermaterial made from carbon with unique properties and the potential to revolutionize many areas from electronics to transport and energy.
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Physicists have discovered how electrons travel through the novel 2D material graphene.

Graphene is a one atom thick supermaterial made from carbon with unique properties and the potential to revolutionize many areas from electronics to transport and energy.

An international team of researchers with a crucial input from Lancaster University have discovered that electrons in graphene move like molecules in liquid water.

Dr Leonid Ponomarenko from Lancaster University said: "Graphene never stops surprising us.

"This regime of electron transport, known as hydrodynamic regime, has been predicted decades ago, but experimental observation has become possible only now.

"It turns out that electrons in graphene frequently collide with each other resulting in a new form of collective behavior, which has not been observed in other conducting materials."

Electrical currents in graphene form "whirlpools" just like water does when a stream is being diverted. These whirlpools can then be detected in resistance measurements.

The research published in Science is by Lancaster University in collaboration with Manchester University's National Graphene Institute and Scuola Normale Superiore in Pisa.


Story Source:

The above post is reprinted from materials provided by Lancaster University. Note: Materials may be edited for content and length.


Journal Reference:

  1. D. A. Bandurin, I. Torre, R. K. Kumar, M. Ben Shalom, A. Tomadin, A. Principi, G. H. Auton, E. Khestanova, K. S. Novoselov, I. V. Grigorieva, L. A. Ponomarenko, A. K. Geim, M. Polini. Negative local resistance caused by viscous electron backflow in graphene. Science, 2016; DOI: 10.1126/science.aad0201

Cite This Page:

Lancaster University. "New insight into graphene." ScienceDaily. ScienceDaily, 18 February 2016. <www.sciencedaily.com/releases/2016/02/160218083603.htm>.
Lancaster University. (2016, February 18). New insight into graphene. ScienceDaily. Retrieved July 24, 2016 from www.sciencedaily.com/releases/2016/02/160218083603.htm
Lancaster University. "New insight into graphene." ScienceDaily. www.sciencedaily.com/releases/2016/02/160218083603.htm (accessed July 24, 2016).

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