Fundamental study on Seebeck effect in liquid induced by thermophoresis

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K17973
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Osaka University
• Principal Investigator: Tsuji Tetsuro 大阪大学, 基礎工学研究科, 助教 (00708670)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 分子流体力学 / 熱泳動 / 熱電効果 / マイクロ流体デバイス / 界面現象

Outline of Final Research Achievements

Temperature gradient in continuous fluids induces the motion of dispersed micro/nano particles even when fluids are motionless. This phenomenon is known as thermophoresis and is expected to develop a novel control technique of the particle motion. However, the driving mechanism of thermophoresis is not yet fully understood. In this research, we carried out some experimental studies to investigate thermoelectric effect in water solution. Thermoelectric effect is expected to play a key role in thermophoresis. In fact, we found that the addition of NaOH to water solution reverses the direction of thermophoresis of micro particles. Moreover, we developed an on-chip microfluidic device which utilizes thermophoresis for the controｌ of microparticle motion.

Free Research Field

分子流体力学