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Probing specific gravity in real-time with graphene oxide plasmonics
https://oist.repo.nii.ac.jp/records/693
https://oist.repo.nii.ac.jp/records/693a085a998-ceda-4700-bbe1-eff15d971236
名前 / ファイル | ライセンス | アクション |
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Accepted verison (6.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-12-07 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Probing specific gravity in real-time with graphene oxide plasmonics | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Garifullina, Ainash
× Garifullina, Ainash× Bhalla, Nikhil× Shen, Amy Q. |
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書誌情報 |
en : Analytical Methods 巻 10, 号 3, p. 290-297, 発行日 2018-12-06 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Specific gravity (SG), the ratio of the density of a substance to the density of a reference material, is a standard indicator of the concentration of an analyte in a given solution. SG is routinely used for product quality assessment in the food industry. However, currently available commercial SG meters, such as hand-held refractometers and density meters, are highly sensitive to humidity and temperature, and do not allow real-time measurements. For these reasons, SG detection is often time-consuming which leads to unwanted interruptions in food manufacturing processes. Therefore, highly sensitive, label-free, and real-time sensors for the detection of SG are urgently needed for food quality control. In this context, we develop a graphene oxide (GO)-coated gold (Au) surface plasmon resonance (SPR) sensor, for the first time, to measure the SG of food samples in real-time. The SG values of sample solutions are correlated with the refractive indices (RI) of these solutions, which are captured by the SPR measurements, with a sensitivity of 105 SPR response units. Moreover, the use of a GO coating provides a strong enhancement of plasmonic resonances due to its optoelectronic properties, doubling the sensitivity of SPR response units per RI unit (2 × 105) when compared to conventional Au SPR chips (1 × 105). We also validate our sensor performance by measuring the SG in real food samples. Our results demonstrate a highly sensitive, efficient, high throughput, and reproducible approach for SG measurements in food industry settings, and open new opportunities to utilize improved SPR sensor technology for many other label-free analytical sensing applications. | |||||
出版者 | ||||||
出版者 | The Royal Society of Chemistry | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1759-9679 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1759-9660 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1039/C7AY02423A | |||||
権利 | ||||||
権利情報 | © 2018 The Royal Society of Chemistry. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://pubs.rsc.org/en/Content/ArticleLanding/2018/AY/C7AY02423A#!divAbstract | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |