Microfluidic Control Using Surface Regulation by Electrochemical Reactions

• Project/Area Number: 23656184
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Nagoya University
• Principal Investigator: MARUYAMA Hisataka 名古屋大学, 工学研究科, 助教 (60377843)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 電気化学反応 / 親水性 / 疎水性 / マイクロ流体チップ / 流体制御

Research Abstract

We studied the microfluidic components controlled by surface modification induced by electrochemical reaction. The surface which can control the microparticle adhesion electrochemically was prepared by using Indium Thin Oxide (ITO) electrode and silane coupling agent. The ITO surface, modified with the vinyl-terminated silane coupling agent, showed the reversible change between hydrophilic and hydrophobic surface. Flow speed control was succeeded by proposed method. Reversible adhesion control of polystyrene (PS) microparticles were also succeeded in a microchip.