Abstract

Capacitively coupled shortwave radiofrequency fields (13.56 MHz) resistively heat low concentrations (∼1 ppm) of gold nanoparticles with a thermal power dissipation of ∼380 kW/g of gold. Smaller diameter gold nanoparticles (< 50 nm) heat at nearly twice the rate of larger diameter gold nanoparticles (≥50 nm), which is attributed to the higher resistivity of smaller gold nanostructures. A Joule heating model has been developed to explain this phenomenon and provides critical insights into the rational design and engineering of nanoscale materials for noninvasive thermal therapy of cancer.

https://static-content.springer.com/image/art%3A10.1007%2Fs12274-009-9048-1/MediaObjects/12274_2009_9048_Fig1_HTML.jpg

Keywords

Resistivity radiofrequency gold nanoparticles cancer thermal

Supplementary material

12274_2009_9048_MOESM1_ESM.pdf (246 kb)
Supplementary material, approximately 340 KB.

Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2009