Size-dependent joule heating of gold nanoparticles using capacitively coupled radiofrequency fields


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.


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Correspondence to Paul Cherukuri.

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These two authors made an equal contribution to the work.

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Moran, C.H., Wainerdi, S.M., Cherukuri, T.K. et al. Size-dependent joule heating of gold nanoparticles using capacitively coupled radiofrequency fields. Nano Res. 2, 400–405 (2009).

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  • Resistivity
  • radiofrequency
  • gold
  • nanoparticles
  • cancer
  • thermal