Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces

The stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (UCNP) were investigated from experiments and simulations. TheUCNPwere characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single UCNPmeasurements wer...

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Detalles Bibliográficos
Publicado: 2017
Materias:
Microscopy
Stochastic dynamics
Upconversion nanoparticles
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20506120_v5_n1_p_Nome
http://hdl.handle.net/20.500.12110/paper_20506120_v5_n1_p_Nome
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling paper:paper_20506120_v5_n1_p_Nome2023-06-08T16:33:51Z Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces Microscopy Stochastic dynamics Upconversion nanoparticles The stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (UCNP) were investigated from experiments and simulations. TheUCNPwere characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single UCNPmeasurements were performed by fluorescence upconversion micro-spectroscopy and optical trapping. The mean-square displacement (MSD) from singleUCNPexhibited a time-dependent diffusion coefficient which was compared with Brownian dynamics simulations of a viscoelastic model of harmonically bound spheres. Experimental time-dependent two-dimensional trajectories of individualUCNPrevealed correlated two-dimensional nanoparticle motion. The measurements were compared with stochastic trajectories calculated in the presence of a non-conservative rotational force field. Overall, the complex interplay ofUCNPadhesion, thermal fluctuations and optical forces led to a rich stochastic behavior of these nanoparticles. ©2017 IOP Publishing Ltd. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20506120_v5_n1_p_Nome http://hdl.handle.net/20.500.12110/paper_20506120_v5_n1_p_Nome
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Microscopy
Stochastic dynamics
Upconversion nanoparticles
spellingShingle Microscopy
Stochastic dynamics
Upconversion nanoparticles
Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
topic_facet Microscopy
Stochastic dynamics
Upconversion nanoparticles
description The stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (UCNP) were investigated from experiments and simulations. TheUCNPwere characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single UCNPmeasurements were performed by fluorescence upconversion micro-spectroscopy and optical trapping. The mean-square displacement (MSD) from singleUCNPexhibited a time-dependent diffusion coefficient which was compared with Brownian dynamics simulations of a viscoelastic model of harmonically bound spheres. Experimental time-dependent two-dimensional trajectories of individualUCNPrevealed correlated two-dimensional nanoparticle motion. The measurements were compared with stochastic trajectories calculated in the presence of a non-conservative rotational force field. Overall, the complex interplay ofUCNPadhesion, thermal fluctuations and optical forces led to a rich stochastic behavior of these nanoparticles. ©2017 IOP Publishing Ltd.
title Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
title_short Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
title_full Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
title_fullStr Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
title_full_unstemmed Rich stochastic dynamics of co-doped Er:Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
title_sort rich stochastic dynamics of co-doped er:yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20506120_v5_n1_p_Nome
http://hdl.handle.net/20.500.12110/paper_20506120_v5_n1_p_Nome
_version_ 1768544524948209664

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