Synthesis of Nanomaterials by Pulsed Laser Ablation in Liquid Environment

A.M. Darwish, W. Hosam, A. Shabaka, M. Talaat

Laser Technology Unit (LTU) in the Center Of Excellence for Advanced Sciences (CEAS), Spectroscopy department, Physics division, National Research Center (NRC), Cairo, Egypt

A pulsed laser-assisted in liquid environment method has been developed successfully to synthesis size-tunable (5-12nm) and different shape (sphere, rode, rope) of nano II–VI semiconductor (Cadmium sulfide). This method can be carried by two ways; the first one is Top-Down technique appeared in publications in the last few decades while the other one is Bottom-Up technique appeared to be the first time in this paper. X-ray diffraction, Ultraviolet Visible spectroscopy, and transmission electron microscopy confirm that the nanoparticles are crystalline. The methods lead to the production of nanomaterials, which are of importance for photonics and biosensing applications. The both synthesized methods can be applied in all materials because of its ability to ablate almost all kinds of materials due to the ultra-high energy density and control over the growth process by manipulating the process parameters like Intensity, wavelength, etc

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