Title :
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
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;
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
DOI :
10.1109/OMEMS.2010.5672193
