Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period
When microspheres are illuminated by tightly focused vortex beams, they can be trapped in a non-equilibrium steady state where they orbit around the optical axis. By using the Mie–Debye theory for optical tweezers, we demonstrate that the orbital period strongly depends on the particle’s chirality i...
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| Format: | Article |
| Language: | English |
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De Gruyter
2025-01-01
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| Series: | Nanophotonics |
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| Online Access: | https://doi.org/10.1515/nanoph-2024-0517 |
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| author | Diniz Kainã Schoger Tanja da Fonseca Arthur L. Dutra Rafael S. Ether Jr Diney S. Ingold Gert-Ludwig Pinheiro Felipe A. Viana Nathan B. Neto Paulo A. Maia |
| author_facet | Diniz Kainã Schoger Tanja da Fonseca Arthur L. Dutra Rafael S. Ether Jr Diney S. Ingold Gert-Ludwig Pinheiro Felipe A. Viana Nathan B. Neto Paulo A. Maia |
| author_sort | Diniz Kainã |
| collection | DOAJ |
| description | When microspheres are illuminated by tightly focused vortex beams, they can be trapped in a non-equilibrium steady state where they orbit around the optical axis. By using the Mie–Debye theory for optical tweezers, we demonstrate that the orbital period strongly depends on the particle’s chirality index. Taking advantage of such sensitivity, we put forth a method to experimentally characterize with high precision the chiroptical response of individual optically trapped particles. The method allows for an enhanced precision at least one order of magnitude larger than that of similar existing enantioselective approaches. It is particularly suited to probe the chiroptical response of individual particles, for which light-chiral matter interactions are typically weak. |
| format | Article |
| id | doaj-art-f6a1881a65a2439dbe939608413e9401 |
| institution | Kabale University |
| issn | 2192-8614 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj-art-f6a1881a65a2439dbe939608413e94012025-02-10T13:24:47ZengDe GruyterNanophotonics2192-86142025-01-0114220921710.1515/nanoph-2024-0517Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital periodDiniz Kainã0Schoger Tanja1da Fonseca Arthur L.2Dutra Rafael S.3Ether Jr Diney S.4Ingold Gert-Ludwig5Pinheiro Felipe A.6Viana Nathan B.7Neto Paulo A. Maia8Instituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilInstitut für Physik, Universität Augsburg, 86135Augsburg, GermanyInstituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilLISComp-IFRJ, Instituto Federal de Educação, Ciência e Tecnologia, Rua Sebastão de Lacerda, Paracambi, Rio de Janeiro, 26600-000, BrazilInstituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilInstitut für Physik, Universität Augsburg, 86135Augsburg, GermanyInstituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilInstituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilInstituto de Física, 28125Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, 21941-972, BrazilWhen microspheres are illuminated by tightly focused vortex beams, they can be trapped in a non-equilibrium steady state where they orbit around the optical axis. By using the Mie–Debye theory for optical tweezers, we demonstrate that the orbital period strongly depends on the particle’s chirality index. Taking advantage of such sensitivity, we put forth a method to experimentally characterize with high precision the chiroptical response of individual optically trapped particles. The method allows for an enhanced precision at least one order of magnitude larger than that of similar existing enantioselective approaches. It is particularly suited to probe the chiroptical response of individual particles, for which light-chiral matter interactions are typically weak.https://doi.org/10.1515/nanoph-2024-0517vortex beamsoptical tweezerslight-chiral matter interactionschirality measurementschiral nanoparticles |
| spellingShingle | Diniz Kainã Schoger Tanja da Fonseca Arthur L. Dutra Rafael S. Ether Jr Diney S. Ingold Gert-Ludwig Pinheiro Felipe A. Viana Nathan B. Neto Paulo A. Maia Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period Nanophotonics vortex beams optical tweezers light-chiral matter interactions chirality measurements chiral nanoparticles |
| title | Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| title_full | Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| title_fullStr | Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| title_full_unstemmed | Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| title_short | Probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| title_sort | probing the chirality of a single microsphere trapped by a focused vortex beam through its orbital period |
| topic | vortex beams optical tweezers light-chiral matter interactions chirality measurements chiral nanoparticles |
| url | https://doi.org/10.1515/nanoph-2024-0517 |
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