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Nanovortex-Driven All-Dielectric Optical Diffusion Boosting and Sorting Concept for Lab-on-a-Chip Platforms
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SYSNO ASEP 0525154 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanovortex-Driven All-Dielectric Optical Diffusion Boosting and Sorting Concept for Lab-on-a-Chip Platforms Author(s) Valero, A.C. (RU)
Kislov, D. (RU)
Gurvitz, E.A. (RU)
Shamkhi, H. (RU)
Pavlov, A.A. (RU)
Redka, D. (RU)
Yankin, S. (RU)
Zemánek, Pavel (UPT-D) RID, SAI, ORCID
Shalin, A.S. (RU)Number of authors 9 Article number 1903049 Source Title Advanced Science. - : Wiley
Roč. 7, č. 11 (2020)Number of pages 12 s. Publication form Online - E Language eng - English Country US - United States Keywords all-dielectric nanophotonics ; lab-on-a-chip platforms ; nanofluidics ; optomechanical manipulations ; spin-orbit couplings Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects GA19-17765S GA ČR - Czech Science Foundation (CSF) TE01020233 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Open access Institutional support UPT-D - RVO:68081731 UT WOS 000528046700001 EID SCOPUS 85083784457 DOI 10.1002/advs.201903049 Annotation The ever-growing field of microfluidics requires precise and flexible control over fluid flows at reduced scales. Current constraints demand a variety of controllable components to carry out several operations inside microchambers and microreactors. In this context, brand-new nanophotonic approaches can significantly enhance existing capabilities providing unique functionalities via finely tuned light-matter interactions. A concept is proposed, featuring dual on-chip functionality: boosted optically driven diffusion and nanoparticle sorting. High-index dielectric nanoantennae is specially designed to ensure strongly enhanced spin-orbit angular momentum transfer from a laser beam to the scattered field. Hence, subwavelength optical nanovortices emerge driving spiral motion of plasmonic nanoparticles via the interplay between curl-spin optical forces and radiation pressure. The nanovortex size is an order of magnitude smaller than that provided by conventional beam-based approaches. The nanoparticles mediate nanoconfined fluid motion enabling moving-part-free nanomixing inside a microchamber. Moreover, exploiting the nontrivial size dependence of the curled optical forces makes it possible to achieve precise nanoscale sorting of gold nanoparticles, demanded for on-chip separation and filtering. Altogether, a versatile platform is introduced for further miniaturization of moving-part-free, optically driven microfluidic chips for fast chemical analysis, emulsion preparation, or chemical gradient generation with light-controlled navigation of nanoparticles, viruses or biomolecules. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2021 Electronic address https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201903049
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