TY - JOUR
T1 - Design of an optofluidic diffusion sensor by transient grating using dielectrophoresis
AU - Kamata, Makoto
AU - Taguchi, Yoshihiro
AU - Nagasaka, Yuji
N1 - Funding Information:
JSPS KAKENHI Grant Numbers JP18H01388, and JP17J04445; Keio Leading-edge Laboratory of Science and Technology (KLL) specified research projects.
PY - 2018/6/25
Y1 - 2018/6/25
N2 - An optofluidic diffusion sensor using laser-induced dielectrophoresis in a device with a sputtered a-Si:H layer is presented. Diffusion sensors enabling high-speed measurement have important potential uses as bio-sensors and for quantitative analysis of nano-sized products. The present sensor was developed for measurement in a few seconds by optic observations of the sample diffusion from transient grating formed by laser-induced dielectrophoresis. As a photoconductive layer for the proposed device, we used a sputtered a-Si:H film. The optical (refractive index and extinction coefficient), structural (Raman and IR spectroscopy), and optoelectronic properties of this film, as well as its applicability to the proposed device are characterized. Nano-sized beads were measured by the fabricated device, and its performance as a diffusion sensor was validated.
AB - An optofluidic diffusion sensor using laser-induced dielectrophoresis in a device with a sputtered a-Si:H layer is presented. Diffusion sensors enabling high-speed measurement have important potential uses as bio-sensors and for quantitative analysis of nano-sized products. The present sensor was developed for measurement in a few seconds by optic observations of the sample diffusion from transient grating formed by laser-induced dielectrophoresis. As a photoconductive layer for the proposed device, we used a sputtered a-Si:H film. The optical (refractive index and extinction coefficient), structural (Raman and IR spectroscopy), and optoelectronic properties of this film, as well as its applicability to the proposed device are characterized. Nano-sized beads were measured by the fabricated device, and its performance as a diffusion sensor was validated.
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U2 - 10.1364/OE.26.016970
DO - 10.1364/OE.26.016970
M3 - Article
C2 - 30119514
AN - SCOPUS:85049036210
VL - 26
SP - 16970
EP - 16983
JO - Optics Express
JF - Optics Express
SN - 1094-4087
IS - 13
ER -