Light-powered micromotor driven by geometry-assisted, asymmetric photon-heating and subsequent gas convection

Li Hsin Han, Shaomin Wu, J. Christopher Condit, Nate J. Kemp, Thomas E. Milner, Marc D. Feldman, Shaochen Chen

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Abstract

We report on the design, fabrication, and analysis of a light-driven micromotor. The micromotor was created from a nanoporous polymer with close-packed gold nanoparticles which generate heat by absorbing light. The blades of the micromotor were curved, forming convex and concave sides. Upon lateral irradiation, by geometric effect the convex side transfers more photon-generated heat to the surrounding gas molecules, causing a convective motion of gas and leading to the rotation of the micromotor. The light-driven motions of gas molecules were analyzed using molecular dynamics modeling.

Original languageEnglish (US)
Article number213509
JournalApplied Physics Letters
Volume96
Issue number21
DOIs
Publication statusPublished - May 24 2010

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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