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Sharp‐Cornered Liquid Drops by Wetting of Nanoscale Features
Author(s) -
Birembaut Fabrice,
Perney Nicolas,
Pechstedt Katrin,
Bartlett Philip N.,
Russell Andrea E.,
Baumberg Jeremy J.
Publication year - 2008
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.200800564
Subject(s) - wetting , materials science , nanoscopic scale , raman scattering , substrate (aquarium) , evaporation , bending , microstructure , contact angle , nanotechnology , wetting transition , composite material , raman spectroscopy , optics , oceanography , physics , geology , thermodynamics
Serrated‐edge droplets : The wetting of metallic microstructures with nanoscale features, used as substrates for surface‐enhanced Raman scattering, can result in sharp bending of the droplet edges. Tethering of the liquid/air/substrate contact line induces flows of analyte to particular locations as the droplet recedes during evaporation (see SEM image). Molecules are preferentially deposited in the pyramidal pits on these structures.