Open AccessGold nanostars as thermoplasmonic nanoparticles for optical heating
Author(s) -
Rogelio Rodríguez-Oliveros,
José A. SánchezGil
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.000621
Subject(s) - materials science , nanoparticle , scattering , optics , absorption (acoustics) , plasmon , surface plasmon resonance , colloidal gold , thermal , surface plasmon , mie scattering , light scattering , molecular physics , nanotechnology , optoelectronics , chemistry , physics , composite material , meteorology
Gold nanostars are theoretically studied as efficient thermal heaters at their corresponding localized surface-plasmon resonances (LSPRs). Numerical calculations are performed through the 3D Green's Theorem method to obtain the absorption and scattering cross sections for Au nanoparticles with star-like shape of varying symmetry and tip number. Their unique thermoplasmonic properties, with regard to their (red-shifted) LSPR wavelentgh, (∼ 30-fold increase) steady-state temperature, and scattering/absorption cross section ratios, make them specially suitable for optical heating and in turn for cancer thermal therapy.