Files in this item
Local sensing of absolute refractive index during protein-binding using microlasers with spectral encoding
Item metadata
dc.contributor.author | Caixeiro , Soraya | |
dc.contributor.author | Kunstmann-Olsen, Casper | |
dc.contributor.author | Schubert, Marcel | |
dc.contributor.author | Hill, Joseph Samuel | |
dc.contributor.author | Barnard, Isla Rose Mary | |
dc.contributor.author | Simmons, Matthew D. | |
dc.contributor.author | Johnson, Steven | |
dc.contributor.author | Gather, Malte Christian | |
dc.date.accessioned | 2023-04-12T14:30:09Z | |
dc.date.available | 2023-04-12T14:30:09Z | |
dc.date.issued | 2023-07-04 | |
dc.identifier | 283630337 | |
dc.identifier | c0bd70e8-f86f-4be7-9fa6-b2dd59e9015c | |
dc.identifier | 85151977194 | |
dc.identifier.citation | Caixeiro , S , Kunstmann-Olsen , C , Schubert , M , Hill , J S , Barnard , I R M , Simmons , M D , Johnson , S & Gather , M C 2023 , ' Local sensing of absolute refractive index during protein-binding using microlasers with spectral encoding ' , Advanced Optical Materials , vol. 11 , no. 13 , 2300530 . https://doi.org/10.1002/adom.202300530 | en |
dc.identifier.issn | 2195-1071 | |
dc.identifier.other | ORCID: /0000-0002-8739-4852/work/133187139 | |
dc.identifier.other | ORCID: /0000-0002-4857-5562/work/133187433 | |
dc.identifier.uri | https://hdl.handle.net/10023/27388 | |
dc.description | Funding: Engineering and Physical Sciences Research Council - EP/P030017/1; Alexander von Humboldt-Stiftung; European Research Council - 640012; Royal Society - DH160102. | en |
dc.description.abstract | Multiplexed, specific, and sensitive detection of antigens is critical for the rapid and accurate diagnosis of disease and the informed development of personalized treatment plans. Here, it is shown that polymer microsphere lasers can be used as photonic sensors to monitor and quantify direct surface binding of biomolecules via changes in the refractive index. The unique spectral signature of each individual laser can be used to find their size and effective refractive index which adds a new encoding dimension when compared to conventional fluorescent beads. Antibody-functionalized microlasers selectively detect protein binding, as demonstrated for Immunoglobulin G and C-reactive protein, and have the ability to resolve different stages of the multilayer surface modification. Moreover, by continuously monitoring single lasers, the possibility of real-time monitoring of binding dynamics between antigens in solution phase and the immobilized antibodies is demonstrated. For multiplexed detection, the microlasers are employed in a flow cytometer configuration, with fast spectral detection and identification of microlasers with and without antigen binding. It is envisioned that by combining microlasers with well-established surface modification chemistries and flow geometries, the multiplexing ability of microbead immunoassays can be strongly increased while also opening avenues for single-cell profiling within heterogeneous cell populations. | |
dc.format.extent | 10 | |
dc.format.extent | 2320083 | |
dc.language.iso | eng | |
dc.relation.ispartof | Advanced Optical Materials | en |
dc.subject | Immunoassays | en |
dc.subject | Microfluidics | en |
dc.subject | Microlasers | en |
dc.subject | Refractive index sensing | en |
dc.subject | Whispering gallery modes | en |
dc.subject | QC Physics | en |
dc.subject | QH301 Biology | en |
dc.subject | DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QC | en |
dc.subject.lcc | QH301 | en |
dc.title | Local sensing of absolute refractive index during protein-binding using microlasers with spectral encoding | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.sponsor | European Research Council | en |
dc.contributor.sponsor | The Royal Society | en |
dc.contributor.institution | University of St Andrews. Centre for Biophotonics | en |
dc.contributor.institution | University of St Andrews. Sir James Mackenzie Institute for Early Diagnosis | en |
dc.contributor.institution | University of St Andrews. Institute of Behavioural and Neural Sciences | en |
dc.contributor.institution | University of St Andrews. Biomedical Sciences Research Complex | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.identifier.doi | https://doi.org/10.1002/adom.202300530 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | EP/P030017/1 | en |
dc.identifier.grantnumber | 640012 | en |
dc.identifier.grantnumber | DH160102 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.