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Journal article

Optical trapping of interfaces at ultra-low interfacial tension.

Abstract:
We achieve active control of interfacial phenomena by optically trapping the interface using the gradient forces of a strongly focussed laser beam parallel to the interface. We illustrate our technique in a phase separated colloid-polymer mixture by distorting the interface in a very controlled way. The static structure of the manipulated interface as well as its dynamic relaxation behaviour are analysed. Both the statics and dynamics can be related to the capillary wave height-height correlation functions using the fluctuation dissipation theorem up to surprisingly large deformations of the interface. To underline the novelty and potential of our approach we also show multiple interface distortions and the controlled snap-off of liquid droplets.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1039/c5sm00192g

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Role:
Author


More from this funder
Funding agency for:
Verhoeff, A
Grant:
PIEFGA-2011-302798
More from this funder
Funding agency for:
Lavergne, F
Dullens, R
Grant:
279541-IMCOLMAT
279541-IMCOLMAT
More from this funder
Funding agency for:
Verhoeff, A
Grant:
PIEFGA-2011-302798


Publisher:
Royal Society of Chemistry
Journal:
Soft matter More from this journal
Volume:
11
Issue:
16
Pages:
3100-3104
Publication date:
2015-04-01
DOI:
EISSN:
1744-6848
ISSN:
1744-683X


Language:
English
Pubs id:
pubs:514973
UUID:
uuid:c623d858-a420-4724-9d25-cdd50774bdba
Local pid:
pubs:514973
Source identifiers:
514973
Deposit date:
2015-07-10

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