Rich stochastic dynamics of co-doped Er: Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces
Stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (COEY NPs) were investigated from experiments and simulations. The COEY NPs were characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single COEY NP measur...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97815575_vPartF64-OTA2017_n_p_Nome http://hdl.handle.net/20.500.12110/paper_97815575_vPartF64-OTA2017_n_p_Nome |
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paper:paper_97815575_vPartF64-OTA2017_n_p_Nome2023-06-08T16:38:03Z Rich stochastic dynamics of co-doped Er: Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces Stochastic dynamics Upconversion nanoparticles Diffusion Dynamics Erbium Fluorescence Light scattering Nanoparticles Scanning electron microscopy Suspensions (fluids) Trajectories Viscoelasticity Ytterbium Brownian dynamics simulations Fluorescence upconversion High-resolution scanning electron microscopies Stochastic dynamics Time-dependent diffusion coefficient Two-dimensional trajectory Upconversion nanoparticles Zeta potential measurements Stochastic systems Stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (COEY NPs) were investigated from experiments and simulations. The COEY NPs were characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single COEY NP measurements were performed by fluorescence upconversion micro-spectroscopy and optical trapping. The home-built apparatus was initially calibrated by performing individual trajectory measurements to determine diffusion coefficients in solution from displacement histograms, mean-squared displacement (MSD), and power spectra. MSDs from single COEY NP exhibited timedependent diffusion coefficient which was compared with Brownian dynamics simulations of a viscoelastic model of harmonically bound spheres. Experimental timedependent two-dimensional trajectories of individual COEY NP revealed correlated twodimensional nanoparticle motion. The measurements were compared with stochastic trajectories calculated in the presence of a non-conservative rotational force field. Overall, the complex interplay of COEY NP adhesion, thermal fluctuations and optical forces led to a rich stochastic behavior of these nanoparticles. © 2017 OSA. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97815575_vPartF64-OTA2017_n_p_Nome http://hdl.handle.net/20.500.12110/paper_97815575_vPartF64-OTA2017_n_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 |
Stochastic dynamics Upconversion nanoparticles Diffusion Dynamics Erbium Fluorescence Light scattering Nanoparticles Scanning electron microscopy Suspensions (fluids) Trajectories Viscoelasticity Ytterbium Brownian dynamics simulations Fluorescence upconversion High-resolution scanning electron microscopies Stochastic dynamics Time-dependent diffusion coefficient Two-dimensional trajectory Upconversion nanoparticles Zeta potential measurements Stochastic systems |
| spellingShingle |
Stochastic dynamics Upconversion nanoparticles Diffusion Dynamics Erbium Fluorescence Light scattering Nanoparticles Scanning electron microscopy Suspensions (fluids) Trajectories Viscoelasticity Ytterbium Brownian dynamics simulations Fluorescence upconversion High-resolution scanning electron microscopies Stochastic dynamics Time-dependent diffusion coefficient Two-dimensional trajectory Upconversion nanoparticles Zeta potential measurements Stochastic systems Rich stochastic dynamics of co-doped Er: Yb fluorescence upconversion nanoparticles in the presence of thermal, nonconservative, harmonic and optical forces |
| topic_facet |
Stochastic dynamics Upconversion nanoparticles Diffusion Dynamics Erbium Fluorescence Light scattering Nanoparticles Scanning electron microscopy Suspensions (fluids) Trajectories Viscoelasticity Ytterbium Brownian dynamics simulations Fluorescence upconversion High-resolution scanning electron microscopies Stochastic dynamics Time-dependent diffusion coefficient Two-dimensional trajectory Upconversion nanoparticles Zeta potential measurements Stochastic systems |
| description |
Stochastic dynamics of individual co-doped Er:Yb upconversion nanoparticles (COEY NPs) were investigated from experiments and simulations. The COEY NPs were characterized by high-resolution scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Single COEY NP measurements were performed by fluorescence upconversion micro-spectroscopy and optical trapping. The home-built apparatus was initially calibrated by performing individual trajectory measurements to determine diffusion coefficients in solution from displacement histograms, mean-squared displacement (MSD), and power spectra. MSDs from single COEY NP exhibited timedependent diffusion coefficient which was compared with Brownian dynamics simulations of a viscoelastic model of harmonically bound spheres. Experimental timedependent two-dimensional trajectories of individual COEY NP revealed correlated twodimensional nanoparticle motion. The measurements were compared with stochastic trajectories calculated in the presence of a non-conservative rotational force field. Overall, the complex interplay of COEY NP adhesion, thermal fluctuations and optical forces led to a rich stochastic behavior of these nanoparticles. © 2017 OSA. |
| 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_97815575_vPartF64-OTA2017_n_p_Nome http://hdl.handle.net/20.500.12110/paper_97815575_vPartF64-OTA2017_n_p_Nome |
| _version_ |
1768545166946205696 |