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Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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Sensors and Materials, Volume 29, Number 3 (2017)
Copyright(C) MYU K.K.
pp. 273-280
S&M1319 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2017.1447
Published: March 15, 2017

Lifted Bottom of Microfluidic Channel for Cell Absorption Spectroscopy Using Optical Fibers [PDF]

Motohide Yoshimi, Shinya Kumagai, Yasutake Ohishi, and Minoru Sasaki

(Received August 8, 2016; Accepted January 19, 2017)

Keywords: absorption spectroscopy, cell, optical fiber, bias spring, lifted bottom

A Si microoptical bench has been developed for measuring the absorption spectrum of cells in suspension. Optical fibers are the elements for constructing a light path inside a Si chip. The sensing light is introduced, transmitted through the sample, and detected. The light propagates in the core. A thick surrounding cladding protects the beam from optical disturbance. In many cases, the cells in suspension tend to sink to the bottom of the microfluidic channel because their density is higher than that of water. For bringing the cell in the sensing light beam, the bottom of the microfluidic channel is lifted up to the core height of the optical fiber in the device. The absorption caused by the chlorophyll of the chlorella is observed.

Corresponding author: Minoru Sasaki


Cite this article
Motohide Yoshimi, Shinya Kumagai, Yasutake Ohishi, and Minoru Sasaki, Lifted Bottom of Microfluidic Channel for Cell Absorption Spectroscopy Using Optical Fibers, Sens. Mater., Vol. 29, No. 3, 2017, p. 273-280.



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