Strong size-dependent photoacoustic effect on gold nanoparticles by laser-induced nanobubbles

González, Martín G.; Xiangjiang Liu; Niessner, Reinhard; Haisch, Christoph
April 2010
Applied Physics Letters;4/26/2010, Vol. 96 Issue 17, p174104
Academic Journal
In this paper we propose a mathematical model and an approximate equation to explain the behavior found on the photoacoustic effect generated by laser-induced nanobubbles in colloidal gold solutions. To obtain the equation, we developed a simulation program based on the widely known Rayleigh–Plesset model. A set of measurements was carried out to assess its accuracy on real samples. The equation gives a good approximation for spherical gold nanoparticles with sizes between 10 and 80 nm, and laser fluences larger than the fluence threshold for bubble formation.


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