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Annealing Effect of High Dielectric Material for Low Voltage Electrowetting on Dielectric (EWOD)

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  • Hsiu-Hsiang Chen
  • Chien-Chung Fu

Abstract

In this paper, the high dielectric constants for Ta2O5 (~18.8) and Nb2O5 (~25.5) were deposited by a RF reactive magnetron sputtering and respectively annealed at 700 °C and 400 °C O2 ambiance for 30 min in a conventional furnace. The purpose of this study is to optimize the annealing condition (various temperatures at N2 or O2 ambiance) of the high-dielectric-constant Ta2O5 and Nb2O5 films deposited by RF reactive magnetron sputtering to enhance the dielectric constant of those films to further lower the operating voltage. Based on the results, an electrowetting optical deflector (EOD) filled with the water (1% sodium dodecyl sulfate (SDS)) and dodecane was fabricated and tested, and the contact angle of the inclined liquid surface on the left and right sidewall can be varied about 70° at 9 V operating voltage. This study provides a practical way to fabricate a high dielectric constant layer for low voltage electrowetting on dielectric (EWOD) application.

Suggested Citation

  • Hsiu-Hsiang Chen & Chien-Chung Fu, 2014. "Annealing Effect of High Dielectric Material for Low Voltage Electrowetting on Dielectric (EWOD)," Modern Applied Science, Canadian Center of Science and Education, vol. 8(3), pages 1-10, June.
    • Handle: RePEc:ibn:masjnl:v:8:y:2014:i:3:p:10
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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