Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 429, Issue -, Pages 19-23Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2013.03.050
Keywords
Ionic liquid; Nano-droplet; AFM; Dynamic force; Adhesion
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Funding
- National Natural Science Foundation of China [51205070]
- Natural Science Foundation of Guangxi [2012GXNSFBA053023]
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A novel microfabrication method is presented to fabricate nano wells on silicon surfaces by using a patterned self-assembly technique combine with a dip-coating process. The bottom of the nanowell is fabricated with hydrophilic surface and the top with hydrophobic surface. A single ionic liquid droplet was immobilized in a nanowell by employing the dip-coating process. Dynamic forces of individual ionic liquid nano-droplets with various dimensions were investigated by atomic force microscope (AFM). The effectiveness of the AFM to probe dynamic interactions between ionic liquid nano-droplet in atmosphere was demonstrated. Qualitative trends in the force behavior of the ionic liquid nano-droplets have been obtained by a modified AFM probe. (C) 2013 Elsevier B.V. All rights reserved.
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