PVP-Capped Gold Nanoparticles: Thermal Nonlinear Refraction Probed by Spatial Self-Phase Modulation Marlon S. Ribeiro, Karen C. Ribeiro, Vinícius M. Lenart, Rozane F. Turchiello, Sergio L. Gómez Physica Status Solidi A Applications and Materials Science, 2022 Au nanoparticles have found numerous applications in medicine as therapeutic agents in hyperthermia and also as probes based on their optical properties, specifically the resonance of the localized surface plasmon. Such a resonance enables the conversion of visible radiation into heat. Hence, it is important to characterize the thermooptical properties of nanofluids containing biocompatible nanoparticles. Herein, the nonlinear refractive index of nanofluids from the ring pattern of spatial self‐phase modulation of a Gaussian beam is obtained, and it is applied to a nanofluid containing Au nanoparticles capped with citrate and polyvinylpyrrolidone. The results show that the nonlinear refractive index increases with the concentration of nanoparticles, being suitable candidates for applications in optical hyperthermia.
Low-cost nonlinear optics experiment for undergraduate instructional laboratory and lecture demonstration: A second experiment Marlon S. Ribeiro, Karen C. Ribeiro, Sergio L. Gómez, Vinicius M. Lenart, Rozane de F. Turchiello American Journal of Physics, 2020 This communication presents a second simple and affordable experiment on nonlinear optics which is suitable for an undergraduate educational laboratory and is useful as a tabletop demonstration in a lecture on nonlinear optics. The experiment is based on the spatial self-phase modulation of a laser beam that generates in the far-field a typical pattern of interference rings. Such a nonlinear optical effect is due to thermally induced changes on the phase of a Gaussian laser beam that impinges on an optically absorbing medium. As the absorber, we propose to use a commercial soy sauce or grape juice, both of which are sold in supermarkets and exhibit strong optical absorption. The activities proposed for the experiment allow us to obtain the nonlinear refractive index of the sample.This communication presents a second simple and affordable experiment on nonlinear optics which is suitable for an undergraduate educational laboratory and is useful as a tabletop demonstration in a lecture on nonlinear optics. The experiment is based on the spatial self-phase modulation of a laser beam that generates in the far-field a typical pattern of interference rings. Such a nonlinear optical effect is due to thermally induced changes on the phase of a Gaussian laser beam that impinges on an optically absorbing medium. As the absorber, we propose to use a commercial soy sauce or grape juice, both of which are sold in supermarkets and exhibit strong optical absorption. The activities proposed for the experiment allow us to obtain the nonlinear refractive index of the sample.
Influence of excitation light wavelength and irradiation time on photothermal properties of photochemically synthesized colloidal gold KC Ribeiro, RF Turchiello, SL Gómez Journal of Optics 54 (5), 2966-2974 , 2025 2025.0
Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance K C. Ribeiro, R F. Turchiello, S L. Gómez Plasmonics 20 (9), 7927-7935 , 2025 2025.0
A formação do profissional auxiliar de educador de estudantes público da educação especial no ensino fundamental: desafios da profissão DR Gallo, K Ribeiro Dialogia, e28297-e28297 , 2025 2025.0
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Photothermal Properties of Plasmonic Nanofluids Containing Ag Nanoparticles Under Off-Resonant Excitation: The Influence of Capping Agents MS Ribeiro, KC Ribeiro, RF Turchiello, SL Gómez Brazilian Journal of Physics 54 (6), 248 , 2024 2024.0
Effect of the excitation wavelength on the photochemical synthesis of citrate-capped Au nanoparticles KC Ribeiro, L Fernandes, MA Bechlin, RF Turchiello, SL Gómez Brazilian Journal of Physics 53 (2), 41 , 2023 2023.0 Citations: 6
Propriedades fototérmicas de nanofluidos plasmônicos obtidos por síntese fotoquímica KC Ribeiro 2023.0
PVP‐Capped Gold Nanoparticles: Thermal Nonlinear Refraction Probed by Spatial Self‐Phase Modulation MS Ribeiro, KC Ribeiro, VM Lenart, RF Turchiello, SL Gómez physica status solidi (a) 219 (7), 2100600 , 2022 2022.0 Citations: 5
Low-cost nonlinear optics experiment for undergraduate instructional laboratory and lecture demonstration: A second experiment MS Ribeiro, KC Ribeiro, SL Gómez, VM Lenart, RF Turchiello American Journal of Physics 88 (2), 102-107 , 2020 2020.0 Citations: 4
Bioatividade de vidros e vitrocerâmicas do sistema 2Na2O. 1CaO. 3SiO2 com adições de P2O5, K2O E SrO KC Ribeiro 2018.0
Physical and chemical effects of the hydrogen irradiation on nitrided titanium surfaces GB de Souza, SH Gonsalves, KC Ribeiro, DG Ditzel, M Ueda, ... Surface and Coatings Technology 312, 91-100 , 2017 2017.0 Citations: 10
H-IMPLANTATION CHANGES STOICHIOMETRY AND HYDROXYLATION STATES OF NITRIDED TITANIUM SURFACES GB de Souza, SH Gonsalves, KC Ribeiro, DG Ditzel, M Ueda, ...
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Physical and chemical effects of the hydrogen irradiation on nitrided titanium surfaces GB de Souza, SH Gonsalves, KC Ribeiro, DG Ditzel, M Ueda, ... Surface and Coatings Technology 312, 91-100 , 2017 2017.0 Citations: 10
Effect of the excitation wavelength on the photochemical synthesis of citrate-capped Au nanoparticles KC Ribeiro, L Fernandes, MA Bechlin, RF Turchiello, SL Gómez Brazilian Journal of Physics 53 (2), 41 , 2023 2023.0 Citations: 6
PVP‐Capped Gold Nanoparticles: Thermal Nonlinear Refraction Probed by Spatial Self‐Phase Modulation MS Ribeiro, KC Ribeiro, VM Lenart, RF Turchiello, SL Gómez physica status solidi (a) 219 (7), 2100600 , 2022 2022.0 Citations: 5
Low-cost nonlinear optics experiment for undergraduate instructional laboratory and lecture demonstration: A second experiment MS Ribeiro, KC Ribeiro, SL Gómez, VM Lenart, RF Turchiello American Journal of Physics 88 (2), 102-107 , 2020 2020.0 Citations: 4
Influence of excitation light wavelength and irradiation time on photothermal properties of photochemically synthesized colloidal gold KC Ribeiro, RF Turchiello, SL Gómez Journal of Optics 54 (5), 2966-2974 , 2025 2025.0
Enhancement of Thermal Diffusivity in Au Nanofluids by the Localized Surface Plasmon Resonance K C. Ribeiro, R F. Turchiello, S L. Gómez Plasmonics 20 (9), 7927-7935 , 2025 2025.0
A formação do profissional auxiliar de educador de estudantes público da educação especial no ensino fundamental: desafios da profissão DR Gallo, K Ribeiro Dialogia, e28297-e28297 , 2025 2025.0
Comunicação alternativa: Comunicação alternativa: aplicativos para comunicação de pessoas com transtorno do espectro autista DR Gallo, K Ribeiro Revista Teias de Conhecimento 1 (5) , 2025 2025.0
Photothermal Properties of Plasmonic Nanofluids Containing Ag Nanoparticles Under Off-Resonant Excitation: The Influence of Capping Agents MS Ribeiro, KC Ribeiro, RF Turchiello, SL Gómez Brazilian Journal of Physics 54 (6), 248 , 2024 2024.0
Propriedades fototérmicas de nanofluidos plasmônicos obtidos por síntese fotoquímica KC Ribeiro 2023.0
Bioatividade de vidros e vitrocerâmicas do sistema 2Na2O. 1CaO. 3SiO2 com adições de P2O5, K2O E SrO KC Ribeiro 2018.0
H-IMPLANTATION CHANGES STOICHIOMETRY AND HYDROXYLATION STATES OF NITRIDED TITANIUM SURFACES GB de Souza, SH Gonsalves, KC Ribeiro, DG Ditzel, M Ueda, ...