MS Physics Thesis defense of Rea Divina Mero: Electrowetting actuation of dye-doped liquid droplets for tunable fluorescent displays

MS Thesis Defense of Ms. Rea Divina Mero
Thesis Title: Electrowetting actuation of dye-doped liquid droplets for tunable fluorescent displays
Date and Venue: 430 PM, February 4, 2014, F318

Flourescing dye droplet

Flourescing dye droplet

Abstract
Tunable fluorescence from electrowetting a 1mM rhodamine 6g-doped liquid droplet is demonstrated. The electrowetting set-up consists of a platinum wire electrode in contact with the liquid drop that sits on an electrode with a layer of silicone oil. An actuation of the dye-doped liquid droplet from a contact angle of 90° to 64° was observed with an applied voltage of 24V. The characteristic fluorescence of the droplets was shifted to shorter wavelengths by at least 17nm, with 23nm as the highest shift noted. From an initial wavelength of 568 nm, the peak gradually shifted to 563 nm at 8V, 553 nm at 16V and 545 nm at 20V. Fluorescence peak shifts are attributed to the increase in solvent polarity that affects the molar absorptivity of the dye.

Advertisements

About ateneophysicsnews
Physics News and Features from Ateneo de Manila University

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: