Graphene Electronics

Tuning graphene at a stretch

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Science  08 Jan 2016:
Vol. 351, Issue 6269, pp. 135-136
DOI: 10.1126/science.351.6269.135-e

Graphene is often described as the superlative material, collectively possessing electronic, thermal, and mechanical properties that exceed those of most other materials. The ability to tune these properties is, however, challenging. Stretching graphene alters the lattice structure, causing a change in the electronic properties as if there was a large magnetic field locally applied to the electrons. Zhu et al. exploit this electromechanical property to demonstrate that, by patterning the geometry of the graphene layer in just the right way, they can design-in the desired strain that then gives rise to uniform pseudomagnetic fields. The engineered stretching technique should offer a route toward enhanced and tunable functionality of graphene.

Testing cell circuits like an engineer

PHOTO: KRYSTIAN NAWROCKI/ISTOCK PHOTO

Phys. Rev. Lett. 115, 245501 (2015).

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