Tiny graphene wrinkles create surprisingly powerful electrical effects
Rice University researchers have demonstrated that physical wrinkles in graphene can alter its electrical properties through a phenomenon called flexoelectricity. This discovery suggests that material geometry could be used to control electronics at the atomic scale.
Why it matters
This could lead to the development of more sensitive sensors and thinner electronic devices by manipulating structure rather than chemical composition.
Researchers at Rice University have found that extremely small wrinkles in graphene can alter how the material behaves electrically. The results provide experimental evidence for flexoelectricity, an effect in which uneven bending causes a material to develop an electric charge. The findings are published in Advanced Materials .
The work points to a possible new way to control electricity in materials only a few atoms thick. Instead of changing a material by adding chemicals or combining it with something else, scientists may be able to tune its electrical properties simply by changing its shape. In the future, that strategy could contribute to more sensitive sensors and extremely thin electronic devices.
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