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"Micromolding in Capillaries" for Making Ordered Polymer Beads Crystal Array
Wu Xiaosong,Jin Bangkun,He Pingsheng
Author NameAffiliationE-mail
Wu Xiaosong Department ofPolymer Science and Engineering, University ofScience andTechnology ofChina, Hefei 230026  
Jin Bangkun Department ofPolymer Science and Engineering, University ofScience andTechnology ofChina, Hefei 230026  
He Pingsheng Department ofPolymer Science and Engineering, University ofScience andTechnology ofChina, Hefei 230026 hpsm@ustc.edu.cn 
Abstract:
An effective procedure was demonstrated to crystallize spherical micro-beads into ordered arrays by means of “micromolding in capillaries (MIMIC)”in soft lithography. Patterned microstructures of polystyrene micro-beads were formed by molding in enclosed continuous channels formed by the conformal contact between a solid support and an elastomeric mold whose surface had been patterned with a relief structure having micrometer-scale dimensions. Awater suspension of PS micro-beads filled these channels by capillary action and was allowed to solidify. The mold was then removed. The results showthat the polystyrene micro-beads can be assembled in thisway, and the order and tight two-dimensional andQuasi-three dimensional crystals array can be obtained atthe exit end of capillaries. Theweight concentration of the polymer latex, the dimension of the noncircular capillaries and the environmental temperature are three main factors to govern the ordering of polymer micro-beads.
Key words:  Micromolding in capillary, Polymer beads, Ordered crystals array
FundProject:
毛细微模塑法制作聚合物微球的有序结构
吴晓松,金邦坤,何平笙*
摘要:
用毛细微模塑法在玻璃基片上组装了聚苯乙烯微球紧密的有序阵列.扫描电镜观察了组装后的微球排列.结果表明,在毛细通道的出口端,聚苯乙烯的微球堆积得紧密有序.毛细通道的尺寸,环境温度和聚合物微球乳液的浓度是毛细微模塑法的主要影响因素.
关键词:  毛细微模塑  聚合物纳米微球  有序结构
DOI:10.1088/1674-0068/16/5/406-410
分类号: