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Ultrasmall Microlens Array Based on Vertically Aligned Carbon Nanofibers
Author(s) -
Dai Qing,
Rajasekharan Ranjith,
Butt Haider,
Qiu Xiaohui,
Amaragtunga Gehan,
Wilkinson Timothy D.
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201200397
Subject(s) - microlens , materials science , carbon nanofiber , electric field , electrode , optoelectronics , liquid crystal , dielectric , nanofiber , lens (geology) , carbon fibers , electrospinning , nanotechnology , optics , polymer , composite material , carbon nanotube , chemistry , physics , quantum mechanics , composite number
An ultrasmall tunable microlens with a diameter of 1.5 μm is fabricated using nematic liquid crystals (electrically tunable medium) and vertically aligned carbon nanofibers (CNFs, electrodes). Individual CNFs are grown at the center of circular dielectric regions. This allows the CNFs to produce a more Gaussian electric field profile and hence more uniformity in lens array switching.