Active liquid flow control through a polypyrrole-coated macroporous silicon membrane toward chemical stimulation applications
Active liquid flow control through a polypyrrole-coated macroporous silicon membrane toward chemical stimulation applications
复制标题
通过聚吡咯涂层大孔硅膜进行主动液体流量控制,用于化学刺激应用
DOI:
10.1016/j.sna.2020.112512
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Seo, Sang-woo
中科院分区:
文献类型:
--
作者:
Rostami Azmand, Hojjat;Enemuo, Amarachukwu N.;Seo, Sang-woo
In this paper, we demonstrate the voltage-controlled flow of organic liquid through a macroporous silicon structure. The demonstrated flow control structure consists of a silicon-based macropore membrane and flow control units formed on polypyrrole (PPy)-coated pores, which are actuated by its electrochemical wetting change. Conformal coating of a PPy layer along macropore silicon walls is achieved with the help of spray-deposited tin-oxide (SnO2) layer on the pores. The transport of organic liquid through the developed membrane is successfully controlled by low-voltage external bias on the PPy layer. Cyclic deliveries of organic liquid were demonstrated using the proposed concept. Considering the highly-ordered fluidic channel structure formed in silicon, which can have multiple separated electrodes, the proposed concept has the potential to achieve an actuated fluidic dispenser in an arrayed form.
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