New technique shows how 2-D thin films take the heat | Science News

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New technique shows how 2-D thin films take the heat

Figuring out ways the materials react to higher temps will determine their use in electronics

11:26am, February 13, 2018
2-D material illustration

A HEATED RESPONSE  Probing 2-D materials with high-energy particle beams reveals how these superthin films perform when the heat is on.  

High-energy particle beams can reveal how 2-D thin sheets behave when the heat is cranked up.

Researchers have devised a way to track how these materials, such as the supermaterial graphene, expand or contract as temperatures rise (SN: 10/3/15, p. 7). This technique, described in the Feb. 2 Physical Review Letters, showed that 2-D semiconductors arranged in single-atom-thick sheets expand more like plastics than metals when heated. Better understanding the high-temp behaviors of these and other 2-D materials could help engineers design sturdy nano-sized electronics.

Commonly used silicon-based electronics are “hitting a brick wall,” regarding how much smaller they can get, says Zlatan Aksamija, an electrical engineer at the University of

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