Electrowetting actuation of a dye-doped fluorescent droplet

Raphael A. Guerrero; Rea Divina C. Mero

doi:10.1117/12.2071730

13 November 2014 Electrowetting actuation of a dye-doped fluorescent droplet

Raphael A. Guerrero, Rea Divina C. Mero

Proceedings Volume 9277, Nanophotonics and Micro/Nano Optics II; 92771X (2014) https://doi.org/10.1117/12.2071730
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

We report tunable color output from a fluorescent dye-doped droplet actuated by electrowetting. The system design, based on a planar electrowetting set-up, is compact and straightforward, with minimal voltage requirements for effective actuation. Fluorescent droplets are sourced from a 1 mM solution of rhodamine 6G in distilled water. Initial contact angle for a dye-doped droplet is 72.1°. At a maximum applied voltage of 20 V, the contact angle decreases to 56.5°. Emission spectra are collected as the droplet fluoresces under UV illumination. Over an electrowetting voltage range of 0 to 20 V, the peak fluorescence wavelength shifts from 568 to 546 nm.

Citation Download Citation

Raphael A. Guerrero and Rea Divina C. Mero "Electrowetting actuation of a dye-doped fluorescent droplet", Proc. SPIE 9277, Nanophotonics and Micro/Nano Optics II, 92771X (13 November 2014); https://doi.org/10.1117/12.2071730

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