Title :
Control of Plural Number of Arrayed Microvalves using pH-responsive Hydrogel
Author :
Park, Joong Yull ; Lee, Sang Hoon ; Liu, Chenwei
Author_Institution :
Korea Univ., Seoul
Abstract :
We present a pH-responsive microvalve array system and new multiplexing technology that facilitates the operation of microvalve arrays using pH-responsive hydrogel microspheres. By incorporating these microspheres inside of the arrayed microvalve polydimethylsiloxane (PDMS) platform, we produced pH-responsive arrayed microvalves with ´Open´ and ´Close´ operations carried out by the multiphase laminar streams of pH solutions. The constructed arrayed microvalves were adequately controlled by the multiphase pH-buffer streams with the widths controlled only by the pressure of the pH-buffer solutions.
Keywords :
microvalves; multiphase flow; pH; polymer gels; arrayed microvalves; microspheres; microvalve array system; multiphase laminar streams; multiphase pH-buffer streams; multiplexing technology; pH solutions; pH-responsive hydrogel; plural number control; polydimethylsiloxane; Biological control systems; Chemical technology; Control systems; Microactuators; Microfluidics; Microvalves; Parallel processing; Polymers; Pressure control; Valves;
Conference_Titel :
Sensors, 2007 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1261-7
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.4388671
