Measuring the three-phase contact angle of nanoparticles at fluid interfaces

Measuring the three-phase contact angle of nanoparticles at fluid interfaces

We report a generic technique to image and study the wettability of spherical nanoparticles adsorbed at liquid surfaces and demonstrate that nanoparticle monolayers can be imprinted at air-water and oil-water interfaces and their three-phase contact angle at the original liquid interface can be dete...

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Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP Vol. 12; no. 2; p. 328
Main Authors: Arnaudov, Luben N, Cayre, Olivier J, Cohen Stuart, Martien A, Stoyanov, Simeon D, Paunov, Vesselin N
Format: Journal Article
Language:English
Published: England 01-01-2010
Subjects:
Air
Dimethylpolysiloxanes - chemistry
Microscopy, Atomic Force
Nanoparticles - chemistry
Oils - chemistry
Surface Properties
Water - chemistry
Online Access:Get more information
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Summary:We report a generic technique to image and study the wettability of spherical nanoparticles adsorbed at liquid surfaces and demonstrate that nanoparticle monolayers can be imprinted at air-water and oil-water interfaces and their three-phase contact angle at the original liquid interface can be determined by an atomic force microscopy scan on a replica of the interface; the technique is tested using four different types of nanoparticles, the smallest one having a radius of 37 nm.
ISSN:1463-9084
DOI:10.1039/b917353f