Fabrication of Microfluidic Hemicylindrical Lenses for Light Scanning of Laser Sheet

Title
Fabrication of Microfluidic Hemicylindrical Lenses for Light Scanning of Laser Sheet
Author(s)
당중덩Young Ho Kim[Young Ho Kim]Cheol-Woo Park[Cheol-Woo Park]Gyu-Man Kim[Gyu-Man Kim]
Keywords
LIQUID MICROLENS; MICROSCOPE; CRYSTAL
Issue Date
201210
Publisher
KOREAN SOC PRECISION ENG
Citation
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING, v.13, no.10, pp.1877 - 1882
Abstract
A light scanning device with two microfluidic hemicylindrical lenses was demonstrated for adjustable laser sheet beam scanning applications. An elastomeric hemicylindrical lens, whose focal length can be adjusted by control of the applied fluidic pressure, was fabricated by application of the pressurized casting process on polydimethylsiloxane (PDMS) obtained from a prepared microsized mold. The hemicylindrical lens consisted of a thin membrane, a liquid chamber and a microchannel The applied fluidic pressure deformed the lens membrane and changed the lens shape. The change of the lens shape allowed beam shape transformation or beam scanning according to the relative size of the beam to the lens. By orthogonally placing two microfluidic lenses of different sizes, 1 mm x 5 mm and 3 mm x 15 mm, respectively, a spot laser beam from a 200 mu m-large pinhole was transformed into laser sheet, and then the laser sheet was scanned. The relationship between the lens properties, including lens curvature and laser beam shaping according to different applied pressures on the lens, were systematically investigated. Laser beam scanning properties of the microfluidic light scanning device were also characterized for various applied pressures and offset distances.
URI
http://hdl.handle.net/YU.REPOSITORY/27111http://dx.doi.org/10.1007/s12541-012-0246-5
ISSN
2234-7593
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공과대학 > 기계공학부 > Articles
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