Double Sided-Design of Electrodes Driving Tunable Dielectrophoretic Miniature Lens
Autor: | Yousuf D. Almoallem, Hongrui Jiang |
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Rok vydání: | 2018 |
Předmět: |
Materials science
business.industry Mechanical Engineering 02 engineering and technology Dielectrophoresis 021001 nanoscience & nanotechnology Optofluidics Article law.invention Lens (optics) 020210 optoelectronics & photonics Optics law Goniometer Electrode 0202 electrical engineering electronic engineering information engineering Focal length Electrohydrodynamics Electrical and Electronic Engineering 0210 nano-technology business Voltage |
Zdroj: | Journal of microelectromechanical systems : a joint IEEE and ASME publication on microstructures, microactuators, microsensors, and microsystems. 26(5) |
ISSN: | 1057-7157 |
Popis: | We demonstrate the design methodology, geometrical analysis, device fabrication, and testing of a double-sided design of tunable-focus dielectrophoretic liquid miniature lenses. This design is intended to reduce the driving voltage for tuning the lens, utilizing a double-sided electrode design that enhances the electric field magnitude. Fabricated devices were tested and measurements on a goniometer showed changes of up to 14° in the contact angle when the dielectrophoretic force was applied under 25 Vrms. Correspondingly, the back focal length of the liquid lens changed from 67.1 to 14.4 mm when the driving voltage was increased from 0 to 25 Vrms. The driving voltage was significantly lower than those previously reported with similar device dimensions using single-sided electrode designs. This design allows for a range of both positive and negative menisci dependent on the volume of the lens liquid initially dispensed. [2017-0011] |
Databáze: | OpenAIRE |
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