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- Ribet, Federico, et al.
(author)
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Zero-Loss Optical Switch Based on Ionic Liquid Microdroplet Ewod Actuation
- 2019
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In: 2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781728120072 ; , s. 2290-2293
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Conference paper (peer-reviewed)abstract
- This paper reports the first optical shutter based on electrical actuation of microdroplets featuring zero insertion loss in the open state and broad-band operation. These features are achieved by electrowetting-on-dielectric (EWOD) actuation of ionic liquid microdroplets. Due to their negligible vapor pressure, ionic liquids allow the switch to robustly operate in air, unlike previously proposed systems in which the light had to cross several attenuating and refractive layers. Moreover, this solution enables operation in a much wider wavelength range, e.g. in the infrared spectrum where glass has strong absorption. Additionally, the proposed device requires lower voltage to operate (25 V) and features zero static power consumption.
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