Microfluidic Valve Employing the pH-Responsive Hydrogel Microsphere as an Actuating Element

Ji Young Park, Duck-Joong Kim, Sung Rak Kim, J. Baek, K. Sun, Sang Hoon Lee
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引用次数: 1

Abstract

In this paper, we propose a new fabrication method of pH-responsive microfluidic valves and suggest the feasibility as a microminiature systems without peripheral devices. Conventionally, in-situ photopolymerization method has been employed to build the micro functional structure inside microfluidic channel. Here, we suggest a new method allowing the mass production of stimuli-responsive microsystem through the use of pre-made microstructure as actuating element like assembly of commercial products in the factory. We have massively fabricated pH-responsive microspheres that act as actuating component through the use of PDMS-based microfluidic apparatus and 'on the fly' photopolymerization method. By the incorporation of this microsphere into the microvalve during the fabrication process, we have produced the pH-responsive microfluidic valve in a simple way. The operation and the function of the fabricated microvalve were evaluated through the diverse experiments. The microvalve was successfully fabricated, and functioned well according to the pH change
采用ph响应水凝胶微球作为驱动元件的微流体阀
在本文中,我们提出了一种新的ph响应微流体阀的制造方法,并提出了其作为微微型系统的可行性。传统的原位光聚合方法是构建微流控通道内部的微功能结构。在这里,我们提出了一种新的方法,通过使用预制微结构作为驱动元件,像在工厂中组装商业产品一样,允许大规模生产刺激响应微系统。通过使用基于pdm的微流体装置和“动态”光聚合方法,我们大量制造了ph响应微球,作为驱动组件。通过在制造过程中将这种微球结合到微阀中,我们以一种简单的方式生产了ph响应微流体阀。通过各种实验对制备的微阀的工作性能和功能进行了评价。该微阀制备成功,并能根据pH值的变化发挥良好的作用
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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