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dc.contributor.author | Kritzinger, Ane![]() |
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dc.contributor.author | Forbes, Andrew![]() |
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dc.contributor.author | Forbes, Patricia B.C.![]() |
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dc.date.accessioned | 2023-02-10T05:33:39Z | |
dc.date.available | 2023-02-10T05:33:39Z | |
dc.date.issued | 2022-10 | |
dc.description.abstract | Here we functionalized micro-scaled polymer beads with nano-scaled quantum dots and demonstrate optical trapping and tweezing, with in-situ fluorescence measurement, in an all-digital all-optical configuration. We outline the chemistry required to facilitate this, from deactivating the optical trapping environment to size, adhesion and agglomeration control. We introduce a novel holographic optical trapping set-up that leverages on vectorially structured light, allowing for the delivery of tuneable forms of light from purely scalar to purely vector, including propagation invariant flat-top beams for uniform illumination and tailored intensity gradient landscapes. Finally, we show how this has the potential to quench bleaching in a single wavelength trap by linear (spatial mode) rather than non-linear effects, advancing the nascent field of optics for chemistry. | en_US |
dc.description.department | Chemistry | en_US |
dc.description.librarian | am2023 | en_US |
dc.description.sponsorship | The National Research Foundation of South Africa. | en_US |
dc.description.uri | http://www.nature.com/scientificreports | en_US |
dc.identifier.citation | Kritzinger, A., Forbes, A. & Forbes, P.B.C. 2022, 'Optical trapping and fluorescence control with vectorial structured light', Scientific Reports, vol. 12, art. 17690, pp. 1-12, doi : 10.1038/s41598-022-21224-1. | en_US |
dc.identifier.issn | 2045-2322 (online) | |
dc.identifier.other | 10.1038/s41598-022-21224-1 | |
dc.identifier.uri | https://repository.up.ac.za/handle/2263/89381 | |
dc.language.iso | en | en_US |
dc.publisher | Nature Research | en_US |
dc.rights | © The Author(s) 2022. This article is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.subject | Optical trapping | en_US |
dc.subject | Tweezing | en_US |
dc.subject | Vectorially structured light | en_US |
dc.subject | Bleaching | en_US |
dc.title | Optical trapping and fluorescence control with vectorial structured light | en_US |
dc.type | Article | en_US |