![]() Transmission electron microscopic analysis revealed the homogeneous spherical shape with an average particle size about 39 nm and 50 nm for core/shell and ZnO, respectively. X-ray diffraction analysis showed their hexagonal wurtzite structure while UV–vis analysis investigated the quantum confinement and surface plasmon resonance of the prepared nanostructured particles with significant changes in color behavior. The structural, morphological and optical properties had been studied. We report the synthesis of colloidal solution of ZnO and core/shell nanoparticles by one-pot nanosecond laser ablation (1st harmonic of Nd:YAG laser) method in different liquid media (Ultrapure water and Chloroauric acid). So, this material could be represented a recommended nonlinear material to be a promising candidate for optical limiting applications The prepared sample of core/shell showed a tuning of nonlinearity characteristic property between that of the nanoparticles from Au or Ag. The nonlinear optical characterization of the prepared sample was investigated by Z-scan technique using the second harmonic of the same laser source. These techniques confirmed that produced sample has a crystalline structure from Au an Ag structure, and its morphology has a core/shell structure with Au in shell and Ag in core. The physicochemical investigations were presented by different techniques to investigate its structural characterization, morphological and optical characterization including linear and nonlinear properties. This method is pulsed laser ablation of Ag plate immersed in chloroauric acid solution using Nd:YAG solid state laser (1064nm, 7ns, 10Hz). Keeping in view the fascinating properties of noble materials in the nanoscale, we synthesized nanocomposite materials from metals of Au and Ag in the form of core/shell structure by a simple, eco-friendly, inexpensive, smart, and fast method.
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