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TMNN-2011. Proceedings of the International Symposium on Thermal and Materials Nanoscience and Nanotechnology
May 29 - June 3, 2011, Antalya, Turkey

DOI: 10.1615/ICHMT.2011.TMNN-2011


ISBN Print: 978-1-56700-271-3

ISSN: 2642-5386

NANOPARTICLE-MEDICATED ULTRASONIC HEATING FOR BIOMEDICAL APPLICATIONS
(INVITED PAPER)

page 10
DOI: 10.1615/ICHMT.2011.TMNN-2011.280
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Краткое описание

An experimental investigation on ultrasonic heating effect of different nanoparticle dispersions is conducted in this work to examine the feasibility of nanoparticle-mediated ultrasonic therapy. Different sized spherical-shaped gold nanoparticles (GNPs) are fabricated by the citrate reduction method with the aid of an ultrasonic device. The heating response of different concentrations of GNP dispersions under an external ultrasound irradiation is revealed, and compared with other nanoparticles including alumina and nickel. The results clearly show that nanomaterials have great capability to focus ultrasonic irradiation even at very low concentrations. Up to four-fold increase in the temperature rise rate is observed for GNP at a concentration of 150 μM/L. The effect of GNPs is much higher than that of alumina and nickel nanoparticles. Further discussion shows that possible reasons for the rapid temperature increase shall be related to the enhanced cavitation effect and modified thermal-physical properties of the base fluid.

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