Title :
Droplet-based lateral tunable optofluidic microlens array with pneumatic control
Author :
Liu, Ye ; Jiang, Hongrui
Author_Institution :
Univ. of Wisconsin at Madison, Madison, WI, USA
Abstract :
We report on a droplet-based, in situ formed tunable cylindrical microlens array in microchannels. The deionized water microlenses are formed via liquid-air interfaces of liquid droplets at T-shaped junctions of octadecyltrichlorosilane (OTS) treated polymerized isobornyl acrylate [poly(IBA)] microchannels, and their focal length can be tuned individually by pneumatic manipulation. These microlenses possess low spherical aberrations. Gravity, which affects the shape of the liquid microlenses, is considered in the design. Fluorescence enhancement for potential lab-on-a-chip applications is also demonstrated using such microlens array.
Keywords :
drops; manipulators; micro-optomechanical devices; microchannel flow; microlenses; optical arrays; optical design techniques; optical tuning; pneumatic control equipment; water; cylindrical microlens array; deionized water microlenses; fluorescence; focal length; gravity; isobornyl acrylate; lab-on-a-chip; liquid droplets; microchannels; octadecyltrichlorosilane; optofluidic microlens array; pneumatic manipulation; spherical aberrations; Arrays; Fluorescence; Junctions; Lenses; Microchannel; Microoptics; Shape;
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.2010.5672148
