Spectral tuning of liquid microdroplets standing on a superhydrophobic surface using electrowetting | Zendy

Alper Kıraz | Zendy; Yasin Karadağ | Zendy; Ahmet F. Coskun | Zendy

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Spectral tuning of liquid microdroplets standing on a superhydrophobic surface using electrowetting

Author(s) -

Alper Kıraz,

Yasin Karadağ,

Ahmet F. Coskun

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2927373

Subject(s) - electrowetting , contact angle , materials science , wetting , optics , whispering gallery wave , optoelectronics , surface (topology) , nanotechnology , resonator , composite material , physics , geometry , mathematics , dielectric

Using electrowetting, we demonstrate reversible spectral tuning of the whispering gallery modes of glycerol/water microdroplets standing on a superhydrophobic surface by up to 4.7 nm at 400 V. Our results can inspire electrically tunable optical switches and filters based on microdroplets on a superhydrophobic surface. The sensitivity of the observed spectral drift to the contact angle can also be used to measure the contact angles of microdroplets on a superhydrophobic surface. (C) 2008 American Institute of Physics

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