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Ortiz-Rivero E, Orozco-Barrera S, Chatterjee H, González-Gómez CD, Caro C, García-Martín ML, González PH, Rica RA, Gámez F. Light-to-Heat Conversion of Optically Trapped Hot Brownian Particles. ACS NANO 2023; 17:24961-24971. [PMID: 38048481 PMCID: PMC10754033 DOI: 10.1021/acsnano.3c07086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 11/09/2023] [Accepted: 11/09/2023] [Indexed: 12/06/2023]
Abstract
Anisotropic hybrid nanostructures stand out as promising therapeutic agents in photothermal conversion-based treatments. Accordingly, understanding local heat generation mediated by light-to-heat conversion of absorbing multicomponent nanoparticles at the single-particle level has forthwith become a subject of broad and current interest. Nonetheless, evaluating reliable temperature profiles around a single trapped nanoparticle is challenging from all of the experimental, computational, and fundamental viewpoints. Committed to filling this gap, the heat generation of an anisotropic hybrid nanostructure is explored by means of two different experimental approaches from which the local temperature is measured in a direct or indirect way, all in the context of hot Brownian motion theory. The results were compared with analytical results supported by the numerical computation of the wavelength-dependent absorption efficiencies in the discrete dipole approximation for scattering calculations, which has been extended to inhomogeneous nanostructures. Overall, we provide a consistent and comprehensive view of the heat generation in optical traps of highly absorbing particles from the viewpoint of the hot Brownian motion theory.
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Affiliation(s)
- Elisa Ortiz-Rivero
- Nanomaterials
for Bioimaging Group, Departamento de Física de Materiales,
& Instituto de materiales Nicolás Cabrera & Institute
for Advanced Research in Chemical Sciences,, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Sergio Orozco-Barrera
- Universidad
de Granada, Nanoparticles Trapping
Laboratory, Research Unit Modeling Nature (MNat) and Department of
Applied Physics, 18071 Granada, Spain
| | - Hirak Chatterjee
- Universidad
de Granada, Nanoparticles Trapping
Laboratory, Research Unit Modeling Nature (MNat) and Department of
Applied Physics, 18071 Granada, Spain
| | - Carlos D. González-Gómez
- Universidad
de Granada, Nanoparticles Trapping
Laboratory, Research Unit Modeling Nature (MNat) and Department of
Applied Physics, 18071 Granada, Spain
- Universidad
de Málaga, Department of Applied
Physics II, 29071 Málaga, Spain
| | - Carlos Caro
- Biomedical
Magnetic Resonance Laboratory-BMRL, Andalusian Public Foundation Progress
and Health-FPS, 41092 Sevilla, Spain
- Biomedical
Research Institute of Málaga and Nanomedicine Platform (IBIMA-BIONAND
Platform), University of Málaga, C/Severo Ochoa 35, 29590 Málaga, Spain
| | - María-Luisa García-Martín
- Biomedical
Magnetic Resonance Laboratory-BMRL, Andalusian Public Foundation Progress
and Health-FPS, 41092 Sevilla, Spain
- Biomedical
Research Institute of Málaga and Nanomedicine Platform (IBIMA-BIONAND
Platform), University of Málaga, C/Severo Ochoa 35, 29590 Málaga, Spain
- Biomedical
Research Networking Center in Bioengineering, Biomaterials & Nanomedicine
(CIBER-BBN), 28029 Madrid, Spain
| | - Patricia Haro González
- Nanomaterials
for Bioimaging Group, Departamento de Física de Materiales,
& Instituto de materiales Nicolás Cabrera & Institute
for Advanced Research in Chemical Sciences,, Universidad Autónoma de Madrid, Madrid 28049, Spain
| | - Raúl A. Rica
- Universidad
de Granada, Nanoparticles Trapping
Laboratory, Research Unit Modeling Nature (MNat) and Department of
Applied Physics, 18071 Granada, Spain
| | - Francisco Gámez
- Department
of Physical Chemistry, Universidad Complutense
de Madrid, 28040 Madrid, Spain
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Pattloch S, Dzubiella J. Mean-field models for the chemical fueling of transient soft matter states. SOFT MATTER 2023; 19:7804-7814. [PMID: 37795797 DOI: 10.1039/d3sm00742a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
The chemical fueling of transient states (CFTS) is a powerful process to control the nonequilibrium structuring and the homeostatic function of adaptive soft matter systems. Here, we introduce a simple mean-field model of CFTS based on the activation of metastable equilibrium states in a tilted 'Landau' bistable energy landscape along a coarse-grained reaction coordinate (or 'order parameter') triggered by a nonmonotonic two-step chemical fueling reaction. Evaluation of the model in the quasi-static (QS) limit-valid for fast system relaxation-allows us to extract useful analytical laws for the critical activation concentration and duration of the transient states in dependence of physical parameters, such as rate constants, fuel concentrations, and the system's distance to its equilibrium transition point. We apply our model in the QS limit explicitly to recent experiments of CFTS of collapsing responsive microgels and find a very good performance with only a few global and physically interpretable fitting parameters, which can be employed for programmable material design. Moreover, our model framework also allows a thermodynamic analysis of the energy and performed work in the system. Finally, we go beyond the QS limit, where the system's response is slow and retarded versus the chemical reaction, using an overdamped Smoluchowski approach. The latter demonstrates how internal system time scales can be used to tune the time-dependent behavior and programmed delay of the transient states in full nonequilibrium.
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Affiliation(s)
- Sven Pattloch
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany.
- Cluster of Excellence livMatS@FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, Albert-Ludwigs-Universität Freiburg, D-79110 Freiburg, Germany
| | - Joachim Dzubiella
- Applied Theoretical Physics-Computational Physics, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg, Germany.
- Cluster of Excellence livMatS@FIT-Freiburg Center for Interactive Materials and Bioinspired Technologies, Albert-Ludwigs-Universität Freiburg, D-79110 Freiburg, Germany
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