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Experimental study demonstrates two orders of magnitude switching time reduction in thermocapillarity optical switches, suggesting competitive performance with microelectromechanical devices.
The switching time of existing thermocapillarity optical switches is about two orders of magnitude larger than that of other optical switches, such as a thermooptics switch and a free-space switch using microelectromechanical system technology. This paper reports a thermocapillarity switch whose switching time is comparable to that of the thermooptics and free-space switches. The greatly improved switching time is achieved by lowering the absolute viscosity of the refractive-index matching liquid and improving the switch design.
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Sakata et al. (2001) studied this question.
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