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Acoustomicrofluidic Concentration and Signal Enhancement of Fluorescent Nanodiamond Sensors
https://repo.qst.go.jp/records/85669
https://repo.qst.go.jp/records/856693b29e0f3-e2a4-4a85-830a-739638a5a7fb
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-03-04 | |||||
| タイトル | ||||||
| タイトル | Acoustomicrofluidic Concentration and Signal Enhancement of Fluorescent Nanodiamond Sensors | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Akther, Asma
× Akther, Asma× P. Walsh, Ella× Reineck, Philipp× C. Gibson, Brant× Takeshi, Ohshima× Hiroshi, Abe× McColl, Gawain× L. Jenkins, Nicole× T. Hall, Liam× A. Simpson, David× R. Rezk, Amgad× Y. Yeo, Leslie× Takeshi, Ohshima× Hiroshi, Abe |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Diamond nitrogen-vacancy (NV) centers constitute a promising class of quantum nanosensors owing to the unique magneto-optic properties associated with their spin states. The large surface area and photostability of diamond nanoparticles, together with their relatively low synthesis costs, make them a suitable platform for the detection of biologically relevant quantities such as paramagnetic ions and molecules in solution. Nevertheless, their sensing performance in solution is often hampered by poor signal-to-noise ratios and long acquisition times due to distribution inhomogeneities throughout the analyte sample. By concentrating the diamond nanoparticles through an intense microcentrifugation effect in an acoustomicrofluidic device, we show that the resultant dense NV ensembles within the diamond nanoparticles give rise to an order-of-magnitude improvement in the measured acquisition time. The ability to concentrate anoparticles under surface acoustic wave (SAW) microcentrifugation in a sessile droplet is, in itself, surprising given the welldocumented challenge of achieving such an effect for particles below 1 μm in dimension. In addition to a demonstration of their sensing performance, we thus reveal in this work that the reason why the diamond nanoparticles readily concentrate under the SAWdriven recirculatory flow can be attributed to their considerably higher density and hence larger acoustic contrast compared to those for typical particles and cells for which the SAW microcentrifugation flow has been shown to date. |
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| 書誌情報 |
Analytical Chemistry 巻 93, 号 48, p. 16133-16141, 発行日 2022-03 |
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| 出版者 | ||||||
| 出版者 | ACS publications | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0003-2700 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1021/acs.analchem.1c03893 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1021/acs.analchem.1c03893 | |||||
