A laser driven optofluidic device for high-speed and precise volume-controlled droplet generation on demand

Author

Park, Sung-Yong ; Wu, Ting-Hsiang ; Chen, Yue ; Chiou, Pei Yu

Author_Institution

Dept. of Mech. & Aerosp. Eng., Univ. of California at Los Angeles, Los Angeles, CA, USA

fYear

2010

Firstpage

45

Lastpage

46

Abstract

We report on an ultra-fast, pulse laser-driven droplet generation (PLDG) mechanism that enables on-demand droplet generation up to 10,000 droplets/sec, and continuous tuning of injected droplet volume ranging from 1pL to 150pL with precise volume control (0.26% volume variation) in a microfluidic device. On-demand droplet generation in PLDG is realized by focusing intense laser pulses into water to induce rapid bubble expansion and perturbing an oil-water interface for droplet formation. Device reliability testing of continuous excitation for 3.6 million laser pulsing cycles is also achieved without any damages.

Keywords

bubbles; drops; high-speed optical techniques; micro-optomechanical devices; microfluidics; optical testing; reliability; water; device reliability testing; laser driven optofluidics device; microfluidic device; oil-water interface; rapid bubble expansion; ultrafast pulse laser-driven droplet generation; Distance measurement; Laser excitation; Laser tuning; Microfluidics; Petroleum;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical MEMS and Nanophotonics (OPT MEMS), 2010 International Conference on

Conference_Location

Sapporo

Print_ISBN

978-1-4244-8926-8

Electronic_ISBN

978-1-4244-8925-1

Type

conf

DOI

10.1109/OMEMS.2010.5672193

Filename

5672193