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01.02.2013 | Technical Paper

Light-actuated water droplet motions on ZnO nanorods

verfasst von: Chien-Wei Liu, Chen-Pin Hsu, J. Andrew Yeh, Yuh-Chang Sun, Yu-Fen Huang, Byung Hwan Chu, Fan Ren, Yu-Lin Wang

Erschienen in: Microsystem Technologies | Ausgabe 2/2013

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Abstract

Water droplets were either pushed or pulled with an ultra-violet (UV) light on vertically aligned ZnO nanorods. Steric acid-immobilized ZnO nanorods grown on quartz substrates exhibit a hydrophobic surface possessing high contact angles between water droplets and the substrates. Exposure of UV onto droplets on ZnO NRs led to reduction of contact angles and resulted the internal circulating flows inside the droplets. Droplets located at different sites under the spot of the UV light created different magnitudes of contact angle changes and the internal circulating flows which allowed us to push the droplets away or pull the droplets toward the centre of the UV spot.

Vorheriger Artikel A new design of multi-bit RF MEMS distributed phase shifters for phase error reduction

Nächster Artikel Silver (Ag) as a novel masking material in glass etching for microfluidics applications

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Titel: Light-actuated water droplet motions on ZnO nanorods
verfasst von: Chien-Wei Liu
Chen-Pin Hsu
J. Andrew Yeh
Yuh-Chang Sun
Yu-Fen Huang
Byung Hwan Chu
Fan Ren
Yu-Lin Wang
Publikationsdatum: 01.02.2013
Verlag: Springer-Verlag
Erschienen in: Microsystem Technologies / Ausgabe 2/2013
Print ISSN: 0946-7076
Elektronische ISSN: 1432-1858
DOI: https://doi.org/10.1007/s00542-012-1562-5

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