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Intrinsic optical response of levitating upconverting single particles

dc.contributor.authorMartínez Maestro, Laura
dc.contributor.authorAntón Revilla, Miguel Ángel
dc.contributor.authorCabrera Granado, Eduardo
dc.contributor.authorWeigand Talavera, Rosa María
dc.contributor.authorHernández Rueda, Francisco Javier
dc.date.accessioned2025-03-27T18:45:07Z
dc.date.available2025-03-27T18:45:07Z
dc.date.issued2025
dc.description2020-T1/IND-19951
dc.description.abstractToday, upconverting luminescent particles are routinely used as accurate and reliable probes to remotely measure the temperature of minute volumes of matter in the order of attoliters. Lanthanide-doped particles exhibit adaptability as optical nanothermometers within biological systems, aiding to understand cellular dynamics, pathology, and physiology. Herein, we investigate the intrinsic optical response of Er/Yb-doped single particles levitating in vacuum and compare it with the collective response of ensembles of particles embedded in application-relevant wet and dry environments. We make use of a quadrupole Paul trap that employs a time-varying electric field to confine single Er/Yb-doped particles in vacuum and a thermal bath module to study particles in the above-mentioned environments. Both sub-systems use twin-excitation/detection setups that allow us to record luminescence spectra, covering four orders of magnitude in laser intensity (e.g. 10−1-103 W/cm2 at 980 nm) and temperatures from 20◦C up to 200◦C. We revisit the well-established reliability of ratiometric measurements to accurately measure temperature. We find an almost perfect overlap of the experimental Boltzmann factor as a function of temperature for water, ethanol and air-substrate environments, which is then used to retrieve the temperature of particles levitating in vacuum. We also explore the influence of the surrounding environment for increasing laser intensities by numerically and experimentally examining the balance among relevant emission bands. Our simulations qualitatively reproduce the experimentally measured luminescence in different environments, yielding a single model to simultaneously explain the laser intensity dependence of UV-NIR transitions for both the low and strong laser excitation regimes. Our findings hold great potential to expand the range of applicability of upconverting particles as dual sensors of temperature and laser intensity in different media relevant to biological and nanophotonic applications.
dc.description.departmentDepto. de Óptica
dc.description.facultyFac. de Ciencias Físicas
dc.description.facultyFac. de Odontología
dc.description.refereedTRUE
dc.description.sponsorshipComunidad de Madrid
dc.description.sponsorshipMinisterio de Ciencia e Innovación (España)
dc.description.statuspub
dc.identifier.citationMaestro, LM; Antón, MA; Cabrera-Granado, E.; Weigand, R.; Hernandez-Rueda, J. Respuesta óptica intrínseca de partículas individuales levitantes y convertidas ascendentes. ACS Photonics 2025 , 12 (4), 1783–1792. https://doi.org/10.1021/acsphotonics.4c02024
dc.identifier.doi10.1021/acsphotonics.4c02024
dc.identifier.essn2330-4022
dc.identifier.officialurlhttps://doi.org/10.1021/acsphotonics.4c02024
dc.identifier.relatedurlhttps://pubs.acs.org/doi/10.1021/acsphotonics.4c02024
dc.identifier.urihttps://hdl.handle.net/20.500.14352/119008
dc.issue.number1
dc.issue.number4
dc.journal.titleACS Photonics
dc.language.isoeng
dc.page.final1792
dc.page.initial1783
dc.publisherAmerican Chemical Society
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/ Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/PID2022-136260NB-I00/
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.cdu535
dc.subject.keywordUpconverting particles
dc.subject.keywordLevitating particles
dc.subject.keywordNonlinear optics
dc.subject.keywordPaul trap
dc.subject.keywordLuminescence
dc.subject.keywordErbium
dc.subject.keywordLuminescent nanothermometers
dc.subject.ucmÓptica (Física)
dc.subject.unesco2209 Óptica
dc.titleIntrinsic optical response of levitating upconverting single particles
dc.typejournal article
dc.type.hasVersionVoR
dc.volume.number12
dspace.entity.typePublication
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relation.isAuthorOfPublicationa59c3727-c018-4ce7-84d5-24f3a2f3de79
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relation.isAuthorOfPublicationd9e54546-b998-4b0e-a825-e1eeef1b159b
relation.isAuthorOfPublication.latestForDiscovery98164bb5-399e-41ee-92bc-e71931b1dba1

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