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Precise switching control of liquid crystalline microgears driven by circularly polarized light |
Optics Express, Vol. 20, Issue 4, pp. 4254-4259 (2012)
http://dx.doi.org/10.1364/OE.20.004254
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Abstract
Liquid crystalline molecules carrying photopolymerizable end groups absorb photon energy via a two-photon process, enabling the photofabrication of 3D structures. In this work, we prepared microgears with different heights and tooth lengths. These birefringent microgears can be induced to rotate by circularly polarized light. Here, we demonstrate that the use of phase plate for switching between left- and right-handed polarization reverses the optically induced rotation while maintaining the same rotational frequency. Due to the precise switching control, these birefringent microgears have advantages over previous microrotors that are fabricated from non-birefringent light-curing resins.
© 2012 OSA
OCIS Codes
(160.3710) Materials : Liquid crystals
(220.4610) Optical design and fabrication : Optical fabrication
(220.4880) Optical design and fabrication : Optomechanics
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
ToC Category:
Optical Trapping and Manipulation
History
Original Manuscript: January 4, 2012
Revised Manuscript: January 28, 2012
Manuscript Accepted: January 30, 2012
Published: February 6, 2012
Virtual Issues
Vol. 7, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Kiminori Ito, Hiroshi Frusawa, and Masahiro Kimura, "Precise switching control of liquid crystalline microgears driven by circularly polarized light," Opt. Express 20, 4254-4259 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-4254
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