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Optical absorption coefficients of gold nanorods through acoustic waves in an optical hyperthermia system

Abstract:

The irradiation of small suspensions of gold nanorods (GNRs) using laser pulses at 808nm and 25KHz, produces a series of effects occurring during the interaction of each laser pulse with the amount of gold nanorods in suspension. The result of the interaction laser-GNRs is the generation of acoustic waves, which may influence on cell death in an optical hyperthermia therapy system. Therefore the identification and characterization of acoustic signals and their absorption coefficients is performed in a phantom based in a neutral gelatin system, in order to able to identify and quantify the influence of these acoustic waves in cell death in optical hyperthermia essays.