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Fresnel phase plates as reconfigurable microfluidic lenses

Author(s)
Tsikata, Sedina, 1981-
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Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Advisor
Todd Thorsen.
Terms of use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582
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Abstract
In this study, Fresnel phase plates were tested as reconfigurable lenses. The lenses were constructed from a Fresnel pattern which was transferred to a silicon substrate via photolithography. A layer of PDMS was spin-coated on the substrate and cured to produce the lens. This lens was attached to a PDMS control layer which enabled specific regions of the lens to addressed, via the application of pressure. It was concluded that based on the limitations of the pressure-based Fresnel lenses, liquid-filled flow channels, while possessing slower response times, might be a more promising means of modulating phase.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2004.
 
Includes bibliographical references (leaf 49).
 
Date issued
2004
URI
http://hdl.handle.net/1721.1/32792
Department
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Publisher
Massachusetts Institute of Technology
Keywords
Mechanical Engineering.

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  • Mechanical Engineering - Bachelor's degree
  • Mechanical Engineering - Bachelor's degree

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