Person:
Gámez Márquez, Francisco De Asis

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First Name
Francisco De Asis
Last Name
Gámez Márquez
URI
https://hdl.handle.net/20.500.14352/80780
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Químicas
Department
Química Física
Area
Química Física
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Author: González Gómez, Carlos David × Subject: 577.1 ×

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    Light-to-Heat Conversion of Optically Trapped Hot Brownian Particles
    (ACS Nano, 2023) Ortiz Rivero, Elisa; Orozco Barrera,Sergio; Chatterjee, Hirak; Caro, Carlos; González Gómez, Carlos David; García Martín, María Luisa; Haro González, Patricia; Rica, Raúl A.; Gámez Márquez, Francisco De Asis
    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.