The Hong Kong University of Science and Technology

Mengying Zhang

Weijia Wen

Limu Wang

An apparatus for controlling flow of ER fluid. The apparatus has a first channelfor conveying carrier fluidof a first dielectric constant and dropletsof a second dielectric constant in the carrier fluid. The apparatus further comprises a second channelconveying the ER fluid and a first conductorfor conveying an electrical potential from the second channel to the first channel. A circuitis provided for applying potential difference between the first and second channels. When a droplet is present in the first channel, the ER fluid is solidified in the second channel; when no droplet is present, the ER fluid flows as liquid in the second channel. Therefore the apparatus acts as an IF gate. Arrangements for other types of fluidic logic gate are also disclosed.

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Hong Kong, China

Mengying Zhang