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Strain-controlled Graphene-Polymer Angular Actuator

Published online by Cambridge University Press:  19 June 2019

S. Matt Gilbert ,
Adam Molnar ,
Donez Horton-Bailey ,
Helen Y. Yao  and
Alex Zettl Open the ORCID record for Alex Zettl [Opens in a new window]
S. Matt Gilbert
Affiliation:
Department of Physics, University of California, Berkeley, CA, 94720 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 Kavli Energy Nanosciences Institute, Berkeley, CA, 94720
Adam Molnar
Affiliation:
Department of Physics, University of California, Berkeley, CA, 94720 Kavli Energy Nanosciences Institute, Berkeley, CA, 94720
Donez Horton-Bailey
Affiliation:
Department of Physics, University of California, Berkeley, CA, 94720 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 Kavli Energy Nanosciences Institute, Berkeley, CA, 94720
Helen Y. Yao
Affiliation:
Department of Physics, University of California, Berkeley, CA, 94720 Kavli Energy Nanosciences Institute, Berkeley, CA, 94720
Alex Zettl*
Affiliation:
Department of Physics, University of California, Berkeley, CA, 94720 Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720 Kavli Energy Nanosciences Institute, Berkeley, CA, 94720
*
*(Email: azettl@berkeley.edu)
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Abstract

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.

Keywords

grapheneNanoelectromechanical systems (NEMS)actuation

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Type
Articles
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MRS Advances , Volume 4 , Issue 40: Quantum and Nanomaterials , 2019 , pp. 2161 - 2167
Copyright
Copyright © Materials Research Society 2019 

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