摘要
在微流控器件的微通道内表面制备了分布可控的ZnO纳米棒阵列。先利用单分散的反相胶束借助非传统的去乳化作用在玻璃毛细管通道内壁上得到了分散很好的ZnO晶种,随后得到了ZnO纳米棒的花状簇阵列。通过调控微乳体系中的W值（水与表面活性剂的摩尔比值）得到了分散密度不同的晶种,从而在毛细管内壁上制备出了分布密度可控的ZnO纳米棒阵列,为密封的长微通道功能化改性提出了一种新的方法,经该方法改善后,可在微通道内得到纳米尺度下的一维纳米材料的特殊结构,用来设计和构筑功能化、集成化的微流控器件。
Distribution-tunable ZnO nanorod arrays are prepared on the inner wall of microchannels of microfluidics devices. Firstly well-dispersed ZnO crystal seeds are fabricated on the inner walls of long silica microcapillaries through utilization of nanosized reverse micelles combining with an unconventional demulsification technique. By using the asprepared ZnO seeds, flower-like clusters of ZnO nanorod arrays are obtained on the inner surface of the microcapillaries. By tuning the molar ratio of water to cetyltrimethyl ammonium bromide, distances among the seeds are well tailored and simultaneously control the distribution density of the final ZnO nanorod arrays. This work opens a new possibility for the formation of nanopatterns on long sealed microchannels. Moreover, further improvements of this approach are expected to result in unique architectures at the nanoscale in microchannels suitable for the development of functional integrated microfluidic devices.
基金
国家自然科学基金项目（No.50772022 50772127）
教育部科技创新工程重大项目培育资金项目（No.708039）
高等学校学科创新引智计划项目（No.111-2-04）
上海教委“曙光人才计划”项目（No.07SG37）
上海市重点学科建设项目（B603）
