| Autor: |
Dery L; Institute of Chemistry, the Hebrew University of Jerusalem, Jerusalem 9190401, Israel., Shauloff N; Ilse Katz Institute for Nanotechnology Ben Gurion University of the Negev, Beer Sheva 8410501, Israel., Turkulets Y; School of Electrical Engineering, Ben-Gurion University, Beer Sheva 8410501, Israel., Shalish I; School of Electrical Engineering, Ben-Gurion University, Beer Sheva 8410501, Israel., Jelinek R; Ilse Katz Institute for Nanotechnology Ben Gurion University of the Negev, Beer Sheva 8410501, Israel., Mandler D; Institute of Chemistry, the Hebrew University of Jerusalem, Jerusalem 9190401, Israel. |
| Jazyk: |
angličtina |
| Zdroj: |
ACS sensors [ACS Sens] 2022 Jan 28; Vol. 7 (1), pp. 296-303. Date of Electronic Publication: 2022 Jan 11. |
| DOI: |
10.1021/acssensors.1c02324 |
| Abstrakt: |
Monitoring of nanoparticles (NPs) in air and aquatic environments is an unmet challenge accentuated by the rising exposure to anthropogenic or engineered NPs. The inherent heterogeneity in size, shape, and the stabilizing shell of NPs makes their selective recognition a daunting task. Thus far, only a few technologies have shown promise in detecting NPs; however, they are cumbersome, costly, and insensitive to the NPs morphology or composition. Herein, we apply an approach termed nanoparticle-imprinted matrices (NAIM), which is based on creating voids in a thin layer by imprinting NPs followed by their removal. The NAIM was formed on an interdigitated electrode (IDE) and used for the size-selective detection of silica NPs. Three- and 5-fold increases in capacitance were observed for the reuptake of NPs with similar diameter, compared to smaller or larger NPs, in air and liquid phase, respectively. En masse, the proposed approach lays the foundation for the emergence of field-effective, inexpensive, real-life applicable sensors that will allow online monitoring of NPs in air and liquids. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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