A spin-off of Philips, Liquavista [74], develops color screens based on electrowetting.
We introduce a novel optofluidic solar concentration system based on electrowetting tracking.
Proposed microfluidic actuation and control is based on electrowetting on dielectrics, autonomous capillary networks and active valves.
Each of the liquid prism modules is implemented by a microfluidic (i.e. non-mechanical) technology based on electrowetting for adaptive solar beam steering.
Because focusing speed and aperture size usually correlate inversely, standard liquid variable-focus lenses that are based on electrowetting are, however, not fast enough for such applications or they are only available with relatively small aperture sizes [ 17, 18].
The technology of tunable lenses has progressed rapidly during the recent years; different lens types have been proposed based on electrowetting [ 17, 18], piezo-hydraulic actuation [ 16], or acoustic radiation force [ 19].
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The advantages of the latter, which is based on ElectroHydroDynamics and Electrowetting, are emphasized, with a particular focus on its enhanced capacity for integration of elementary fluidic functions into the microsystems.
