GOLD NANOPARTICLES LASER ABLATED IN ETHANOL FOR BIOSENSORS: OPTICAL AND STRUCTURAL PROPERTIES

Author (s) : K.Saravanan, B.Kumar, K.Bhuvaneswari, J.Udayaseelan

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Abstract :
This paper investigates the effects of laser wavelength on the physical properties of gold nano particles (Au NPs) ablated using laser ablation in ethanol. The technique uses a high-purity gold target and a tattoo removal Q-switching Nd:YAG laser with a 6 nanosecond pulse duration, 2000 mj energy, 500 laser pulses, and 6 Hz frequency. The gold NPs were investigated using structural, X-ray diffraction, and optical analysis. The results show that the best preparation conditions for ablating nanoparticles are 532 nm and 1064 nm, respectively.

Keywords : Laser ablation in liquid; optical preparation; Gold nanoparticles (Au); Photonic crystal fiber; sensors; Biosensors.

Conference Date : 17/09/2021

Pages : 179

Paper ID : IESMDT177