期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 398, 期 -, 页码 64-68出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2012.02.010
关键词
Evaporation; Self-assembly; Coffee stain
资金
- Australian Research Council [DP110104010]
It is well known that particulate matter is drawn to the periphery of evaporating droplets, hence once evaporation is complete a ring of dried matter can be deposited (depending on the wetting conditions of the original drop). The focus of this work is the alteration of the natural process, such that the advantages of simplicity and low cost are not lost, however additional control is gained over the resulting depositions. Timely interventions allow control over the geometrical features of the ring, and allow the deposition of a second particulate matter on top of the first in two ways. Firstly without destruction of the original ring, for biosensing, and secondly with destruction of the original ring to create self-supporting thin chains of particles for flagella construction. (C) 2012 Elsevier B.V. All rights reserved.
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