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Proceedings Paper

Photothermal nanopositioner based on graphene nanocomposites
Author(s): James Loomis; Xiaoming Fan; Balaji Panchapakesan
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Paper Abstract

By dispersing graphene nanoplatelets (GNPs) within a polydimethylsiloxane matrix, we show that light absorption by GNPs and subsequent energy transduction to the polymeric chains can be used to controllably produce significant amounts of motion through entropic elasticity of the pre-strained composite. Using dual actuators, a two-axis sub-micron resolution stage was developed, and allowed for two-axis photo-thermal positioning (~100 μm per axis) with 120 nm resolution (feedback sensor limitation), and ~5μm s–1 actuation speeds. A PID control loop automatically stabilizes the stage against thermal drift, as well as random thermal-induced position fluctuations (up to the bandwidth of the feedback and position sensor).

Paper Details

Date Published:
Proc. SPIE 8816, Nanoengineering: Fabrication, Properties, Optics, and Devices X, 88160Y; doi: 10.1117/12.2036777
Show Author Affiliations
James Loomis, Massachusetts Institute of Technology (United States)
Xiaoming Fan, Univ. of Louisville (United States)
Balaji Panchapakesan, Univ. of Louisville (United States)

Published in SPIE Proceedings Vol. 8816:
Nanoengineering: Fabrication, Properties, Optics, and Devices X
Eva M. Campo; Elizabeth A. Dobisz; Louay A. Eldada, Editor(s)

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