Measurement of gasoline concentratin in flex fuel by usin gold nanoparticle-immibilized hetero-core structured fiber optic

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420420
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: Soka University
• Principal Investigator: Seki Atsushi 創価大学, 理工学部, 教授 (70226629)
• Co-Investigator(Kenkyū-buntansha): Kazuhiro Watanabe 創価大学, 理工学部, 教授 (40240478)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: ヘテロコア光ファイバ / 金ナノ粒子 / 局在表面プラズモン共鳴 / 屈折率 / フレックス燃料 / バイエタノール

Outline of Final Research Achievements

Localized surface plasmon resonance (LSPR) sensor was fabricated by immobilizing gold nanoparticles (AuNPs) on the surface of hetero-core fiber optic, and the sensor was applied to measure gasoline concentration in flex fuel that is a mixture of gasoline and bioethanol.
The spectra measured by using multichannel analyzer show a peak at 540nm, and the peak strength increased according to increasing of gasoline concentration. This result indicates that gasoline concentration in flex fuel could be measured by using this LSPR sensor. The propagating loss spectra varied by depositing layer-by layer thin film on the sensor surface. In case that porous glass beads were immobilizing and hydrophobized, the sensor characteristic was improved in the sensitivity and linearity in wide concentration range. Furthermore, the miniaturized measurement system was developed by using LED, PD and one-board data-processing substrate. The output had a good agreement with that of the multichannel analyzer.

Free Research Field

化学センサ