Chemistry, Biotechnology, and Chemical Engineering (Chemistry and Biotechnology)

Assistant professor

Mitsushio, Masaru

Study on miniaturized and simple sensor systems using Surface Plasmon Resonance phenomenon

A Refractive index sensor made of a glass rod

Making a sensor to measure something is a significant research activity in chemistry. This field is called "analytical chemistry".
The SPR-based sensor allows a rapid, non-destructive, remote, and continuous analysis. SPR is a resonance phenomenon occurring between an electric light field and the free electrons on a metal surface. The resonance condition is influenced by an analyte coming in contact with the metal surface.
The SPR phenomenon using gold, in particular, has attracted attention in recent years because it can find the refractive index at the speed of light without contaminating the analyte to be measured.

Construction of the SPR glass-rod sensor

Addition of the selective layer for the SPR sensor

SEM image of the Teflon AF2400 layer on the Au-deposited glass rod

We developed a Au-deposited optical fiber sensor or glass rod sensor that was coated with a Teflon AF2400 overlay. These sensors allowed us to measure the ethanol concentrations in sugar mixture solutions.
In this research project, we have developed a methodology that efficiently utilizes the SPR phenomenon. We have also studied about sensors that measure only the concentration of a specific analyte from mixtures of various substances.

Profile

Chemistry, Biotechnology, and Chemical Engineering (Chemistry and Biotechnology)

Assistant professor

Mitsushio, Masaru

Masaru Mitsushio was born in Kagoshima in 1971. He received his Ph.D. in 2000 at Kagoshima University. His research interests cover the development of sensing systems using surface plasmon resonance phenomenon. He likes cats very much. His hobby is all about computers.

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