期刊
LANGMUIR
卷 26, 期 14, 页码 11690-11698出版社
AMER CHEMICAL SOC
DOI: 10.1021/la101110t
关键词
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资金
- Center for -Nanoscale Mechatronics & Manufacturing (CNMM) [2009K000069]
- Ministry of Education, Science and Technology, Korea
- U.S. Department of Energy (DOE) [DE-AC02-05CH112]
- Samsung Scholarship Foundation
- National Research Foundation of Korea [14-2008-01-001-00] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We develop a novel patterning technique to create 3D patterns of micro and nanoparticle assembly via evaporative self-assembly based on the coffee-ring effect of an evaporating suspension. The principle of the technique is analyzed theoretically by the scaling analysis of main parameters of the process and the scaling effect, the effect of the volume, the concentration of the suspension, and the effect of surface treatment on the patterning are studied. On the basis of the presented technique, we demonstrate that the patterns of 3D assembly of various sizes of microparticles (Silica), metal oxide nanoparticles (TiO2, ZnO), and metallic nanoparticles (Ag) can be successfully generated by low-concentrated particle suspension (1.25-5 wt %) without additional sintering steps, and we also show the geometries of the patterns can be finely controlled by adjusting the parameters of the process.
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