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A pair of electrodes for an ion drag pump were coated with a gel. The gel was silicone swollen by xylene. The working fluid was also xylene. Voltage applications to the gel-coated electrodes caused the fluid to flow. The flow velocity was comparable to that obtained using untreated electrodes. Thus, we found that the gel coat did not prevent the electrohydrodynamic flow by the ion-dragging effect. The water-proof ability of the coating was also examined. The gel successfully repelled water and showed no significant increase in the current during the voltage application. [ABSTRACT FROM AUTHOR]

Presents a study which demonstrated a type of electrohydrodynamic (EHD) pump that had a pair of electrodes placed inside a gel which can avoid electrochemical decomposition. Advantage of the pumping technique; Description of the EHD flow in a liquid-liquid two phase system; Information on the EHD flow in a gel-liquid two phase system.