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- W3213531520 endingPage "151831" @default.
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- W3213531520 abstract "Surface plasmon resonance (SPR) is a proven technique in sensorics. Wide application of the method is still limited by a necessity of a complex optical equipment using special dispersion elements like a prism or diffraction grating (DG). We have implemented a novel and inexpensive way for fabrication of the DG on a silicon substrate using femtosecond laser ablation (highly regular laser-induced periodic surface structures - HR-LIPSS) technique. The potential of the method has been illustrated for the case of detection of uranium in water. For this purpose, fabricated gratings were coated with thermally evaporated nanofilms of gold and then used as substrates for deposition of nanoparticles of bioinspired polymer polydopamine (PDA) highly selective to uranium under neutral pH. Synergistic combination of the advanced nanofabrication and SPR sensing techniques with advanced PDA ligand allowed preparation of sensing elements with a sub-microgram sensitivity to uranium (∼1.0 × 10−7 g/cm2). Even though the results reported here are just a proof of concept, we believe the approach can be expanded to selective detection of various types of analytes (heavy metals, biomolecules, viruses etc.) under different environments (water, air, aerosols) in the future." @default.
- W3213531520 created "2021-11-22" @default.
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- W3213531520 date "2022-02-01" @default.
- W3213531520 modified "2023-10-16" @default.
- W3213531520 title "Femtosecond laser nano-structuring for surface plasmon resonance-based detection of uranium" @default.
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- W3213531520 doi "https://doi.org/10.1016/j.apsusc.2021.151831" @default.
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