28am2-F-2 多孔高分子膜を用いたイオンラチェットポンプの整流機構

Translated title of the contribution: 28am2-F-2 Rectification mechanism in ion ratchet pump with porous polymer membranes

松崎 嘉仁, 奥村 泰志, 樋口 博紀, 菊池 裕嗣

Research output: Contribution to journalArticle

Abstract

The electroosmotic flow pumps which are non-mechanical pumps consisting of a porous material and a pair of electrode have attracted a great interest of many scientists because of their simple structure. In the pumps, movement of counter ions by electrophoresis induces the electroosmotic flow of water within the pores of the porous material. However, generations of gases like hydrogen and oxygen and pH change are caused by electrolysis of water under direct current driving. Recently, alternating current driven electroosmotic flow pump using track etched membrane was proposed by us. From the measurement of zeta potential on the both surface of the membrane, asymmetry of the pump is considered to arise from the asymmetry of the counter ions on the both surfaces of membrane. In this study, rectification mechanism in the pump is proposed through measurement of asymmetry of electric current under alternative current driving, the zeta potentials and the hydrodynamic radius of the pores obtained by the streaming potential measurements.
Original languageJapanese
Pages (from-to)"28am2-F-2-1"-"28am2-F-2-2"
Journalマイクロ・ナノ工学シンポジウム
Volume2015
Issue number7
Publication statusPublished - Oct 21 2015

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ion pumps
rectification
pumps
membranes
polymers
asymmetry
porous materials
counters
porosity
electrolysis
electrophoresis
electric current
water
alternating current
ions
direct current
hydrodynamics
radii
electrodes
oxygen

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28am2-F-2 多孔高分子膜を用いたイオンラチェットポンプの整流機構. / 松崎嘉仁; 奥村泰志; 樋口博紀; 菊池裕嗣.

In: マイクロ・ナノ工学シンポジウム, Vol. 2015, No. 7, 21.10.2015, p. "28am2-F-2-1"-"28am2-F-2-2".

Research output: Contribution to journalArticle

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AU - 奥村, 泰志

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AB - The electroosmotic flow pumps which are non-mechanical pumps consisting of a porous material and a pair of electrode have attracted a great interest of many scientists because of their simple structure. In the pumps, movement of counter ions by electrophoresis induces the electroosmotic flow of water within the pores of the porous material. However, generations of gases like hydrogen and oxygen and pH change are caused by electrolysis of water under direct current driving. Recently, alternating current driven electroosmotic flow pump using track etched membrane was proposed by us. From the measurement of zeta potential on the both surface of the membrane, asymmetry of the pump is considered to arise from the asymmetry of the counter ions on the both surfaces of membrane. In this study, rectification mechanism in the pump is proposed through measurement of asymmetry of electric current under alternative current driving, the zeta potentials and the hydrodynamic radius of the pores obtained by the streaming potential measurements.

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