紫外辅助微流体制备铁电复合粒子
Ultraviolet-assisted microfluidic generation of ferroelectric composite particles.
作者信息
Zhang Cancan, Yu Xiaolei, You Sujian, Cai Bo, Liu Huiqin, Zhang Lingling, Rao Lang, Liu Wei, Guo Shi-Shang, Zhao Xing-Zhong
机构信息
Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University , Wuhan 430072, People's Republic of China.
出版信息
Biomicrofluidics. 2016 Mar 15;10(2):024106. doi: 10.1063/1.4943897. eCollection 2016 Mar.
We report on the feasible fabrication of microfluidic devices for ferroelectric polymers' synthesis in a rapid and stable fashion. Utilizing micro-mixing and flow-focusing in microchannels, poly(vinylidene fluoride-trifluoroethylene) and copper phthalocyanine are uniformly dispersed in one hydrogel particle, which are then demonstrated to immediate and complete on-chip steady polymerization by moderate ultraviolet treatment. The advantage of our droplet-based microfluidic devices is generating versatile particles from simple spheres to disks or rods, and the lengths of particles can be precisely tuned from 30 to 400 μm through adjusting the flow rates of both disperse and oil phases. In addition, this mixed technique allows for the continuous production of dielectric microparticles with controlled dielectric properties between 10 and 160. Such a microfluidic device offers a flexible platform for multiferroic applications.
我们报道了以快速且稳定的方式制造用于铁电聚合物合成的微流控装置。利用微通道中的微混合和流动聚焦，聚（偏二氟乙烯 - 三氟乙烯）和铜酞菁均匀分散在一个水凝胶颗粒中，然后通过适度的紫外线处理在芯片上立即完成稳定聚合。我们基于液滴的微流控装置的优点是能够生成从简单球体到圆盘或棒状的多种颗粒，并且通过调节分散相和油相的流速，可以将颗粒长度精确调整为30至400μm。此外，这种混合技术允许连续生产介电性能在10至160之间可控的介电微粒。这种微流控装置为多铁性应用提供了一个灵活的平台。
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