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Updated: Jun 17, 2026
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Trapping of Micro Particles in Nanoplasmonic Optical Lattice
Published on: September 5, 2017
Temperature-dependent dielectric function in plasmonic nanobubble formation
Yukun Ji1, Huaxin Li1, Jiaqi Sun1
1School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China. renyt@hit.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|June 16, 2026
Summary
This study models plasmonic nanobubble formation using gold nanoparticles. Nanobubble growth dynamics and optical property changes are analyzed, offering insights for biomedical applications.
Area of Science:
- Biomedical Engineering
- Nanotechnology
- Optical Physics
Background:
- Plasmonic nanobubbles from noble metals are key in biomedical theranostics.
- Understanding nanoparticle photothermal properties during nanobubble formation is vital for optical detection.
Purpose of the Study:
- To establish a coupled model for gold nanoparticle-induced plasmonic nanobubble formation.
- To investigate the dynamic optical properties of nanoparticles during nanobubble generation.
- To explore the effect of SiO2 coating on nanobubble optical properties.
Main Methods:
- Coupled modeling incorporating temperature-dependent dielectric constants of gold and water.
- Lattice Boltzmann Method (LBM) for determining nanobubble size.
- Mie theory for multilayered spheres to calculate optical cross-sections (absorption, scattering, extinction).
Main Results:
- A decrease in gold nanoparticle absorption cross-section during nanobubble formation was observed.
- Reduced heat generation by nanoparticles prolongs nanobubble nucleation time.
- The influence of SiO2 coating on nanobubble optical properties was investigated.
Conclusions:
- The study provides a theoretical framework for controlling plasmonic nanobubbles.
- Findings support advancements in biomedical diagnostics and therapy using nanobubbles.
