Abstract
Any solid in contact with a liquid acquires some immobilized charge on its surface. The immobile charge on the surface attracts counter ions. This structure is so-called electrical double layer (EDL). This is a kind of capacitor, an electrical double layer capacitor (EDLC). We investigated an EDLC in a liquid droplet bridge between two parallel solids under vertical vibration. The solid substrate is an Indium tin oxide (ITO) and the upper solid plate has teflon coating on the ITO surface. It changes that the contact area of the solid-liquid interface at the upper plate when the lower plate vibrates vertically. During this process it repeats that the EDLC is charged and discharged. The results of this experiment can be useful for constructing an micro-fluidic power generation.
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