Integrated 2-D optical lenses designed in PDMS layer to improve fluorescence spectroscopy using optical fibers
SENSORS, 2002 IEEE - Tập 1 - Trang 187-191 vol.1
Tóm tắt
In this paper, the fabrication, characterization and test of 2D-optical lenses using PDMS material are reported in order to perform on a portable chip a fluorescence spectroscopy using optical fibers. The technological steps to make the PDMS layer are first detailed, and the patterns then checked with a SEM. By comparing different interfacial structures, it is shown that the light beam characteristics can be modified and slightly focused on the micro-channels where fluorescent dye is flowing. For a constant dye concentration, the use of such lenses enables one to increase the intensity of fluorescent response compared to the same design with a flat interface, which corresponds to a better sensitivity of the detection method.
Từ khóa
#Integrated optics #Lenses #Optical design #Fluorescence #Spectroscopy #Optical fibers #Optical sensors #Optical device fabrication #Materials testing #Optical fiber testingTài liệu tham khảo
lorentz, 1998, High-aspect-ratio, ultrathick, negative-tone near-UV photoresist and its applications for MEMS, Sensors and Actuators A, 33, 10.1016/S0924-4247(98)80055-1
yamamoto, 2000, Cell free protein synthesis in PDMS-glass hybrid microreactor, Proc of SPIE, 4177, 72
0, Rhodamine B data sheets are available at this address
10.1016/S0142-9418(01)00005-8
10.1063/1.1326929
10.1109/84.967369