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1 results

  • Strain-controlled Graphene-Polymer Angular Actuator

  • S. Matt Gilbert, Adam Molnar, Donez Horton-Bailey, Helen Y. Yao, Alex Zettl
  • Journal:
    MRS Advances / Volume 4 / Issue 40 / 2019
    Published online by Cambridge University Press:
    19 June 2019, pp. 2161-2167
    Print publication:
    2019

  • We demonstrate a suspended graphene-(poly(methyl methacrylate) (PMMA) polymer angular displacement actuator enabled by variable elastic modulus of the perforated stacked structure. Azimuthal flexures support a central disc-shaped membrane, and compression of the membrane can be used to control the rotation of the entire structure. Irradiating the PMMA on graphene stack with 5 kV electrons in a convention scanning electron microscope reduces the elastic modulus of the PMMA and allows graphene’s built in strain to dominate and compress the flexures, thus rotating the actuator.