A pumping technique using electrohydrodynamic flow inside a gel

We demonstrated a new type of electrohydrodynamic (EHD) pump that had a pair of electrodes placed inside a gel (poly(vinyl alcohol) swollen by dimethyl sulfoxide). The fluid (decahydronaphthalene) was in contact with the gel surface. During a voltage application to the electrodes, the EHD flow of dimethyl sulfoxide inside the gel caused the flow of the fluid outside the gel. An advantage of this pumping technique is that one can dissolve some chemicals in the fluid without the fear of their electrochemical decomposition because the electrodes inside the gel are not in contact with the fluid.

[1]  R. Zengerle,et al.  A Simple and Flexible Micro Reactor for Investigations of Heterogeneous Catalytic Gas Phase Reactions , 1999 .

[2]  Jen-Shih Chang,et al.  Electrical current conduction and electrohydrodynamically induced fluid flow in an AW type EHD pump , 2001 .

[3]  Stephanie Y. F. Wong,et al.  The preparation of a series of nitrostilbene ester compounds using micro reactor technology. , 2001, The Analyst.

[4]  Toshihiro Hirai,et al.  Electrically Induced Rapid Deformation of Nonionic Gel , 2000 .

[5]  Toshihiro Hirai,et al.  Actuation of Poly(vinyl alcohol) Gel by Electric Field , 1993 .

[6]  Stephen F. Bart,et al.  Microfabricated electrohydrodynamic pumps , 1990 .

[7]  W. Pickard.  Ion Drag Pumping. I. Theory , 1963 .

[8]  J. Melcher.  Traveling‐Wave Induced Electroconvection , 1966 .

[9]  N. G. Wilson,et al.  The fabrication of micro-porous silica structures for micro-reactor technology , 1998 .

[10]  J. Seyed-Yagoobi,et al.  An analytical study of electrohydrodynamic induction pumping of a stratified liquid/vapor medium , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[11]  Shigeru Nakagawa,et al.  Micropump and sample-injector for integrated chemical analyzing systems , 1990 .

[12]  K. Ikuta,et al.  Micro concentrator with opto-sense micro reactor for biochemical IC chip family. 3D composite structure and experimental verification , 1999, Technical Digest. IEEE International MEMS 99 Conference. Twelfth IEEE International Conference on Micro Electro Mechanical Systems (Cat. No.99CH36291).

[13]  G. Jorgenson,et al.  Improved Ion Drag Pump , 1962 .

[14]  Klaus Hofmann,et al.  A micromachined electrohydrodynamic (EHD) pump , 1991 .

[15]  William F. Pickard,et al.  Ion Drag Pumping. II. Experiment , 1963 .

[16]  G. Barbini,et al.  Influence of electrode geometry on ion-drag pump static pressure , 1995, IEEE Transactions on Dielectrics and Electrical Insulation.

[17]  Toshihiro Hirai,et al.  Electrostriction of highly swollen polymer gel: Possible application for gel actuator , 1994 .

[18]  J. Seyed-Yagoobi,et al.  An experimental investigation of an ion-drag pump in a vertical and axisymmetric configuration , 1989, Conference Record of the IEEE Industry Applications Society Annual Meeting,.

[19]  Robin H. Liu,et al.  Functional hydrogel structures for autonomous flow control inside microfluidic channels , 2000, Nature.

[20]  Yong-Kweon Kim,et al.  Micro electrohydrodynamic pump driven by traveling electric fields , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[21]  A. Harry Sharbaugh,et al.  The Design and Evaluation of an Ion-Drag Dielectric Pump to Enhance Cooling in a Small Oil-Filled Transformer , 1985, IEEE Transactions on Industry Applications.