3 - Nanosecond pulsed laser ablation to synthesize ternary alloy colloidal nanoparticles

Abstract

Pulsed laser ablation (PLA) has been employed to synthesize colloidal GaNO nanoparticles in distilled water. Analysis and characterization are performed to study optical and structural properties on samples generated under different laser fluences by using an ultraviolet-visible (UV-vis) absorption spectrophotometer, an X-ray diffractometer (XRD), and a tunneling electron microscope (TEM). The mean size and size distribution of the nanoparticles were investigated using the image processing technique of collected TEM images in addition to XRD patterns. A history of colloidal nanoparticles, followed by their synthesis and different studies, are presented. The ability of colloids and nanoparticles to initiate inflammatory events is discussed. It is shown that laser fluence has a significant effect on nanoparticle size properties. Also, it is proven that the ablation process affects the nanoparticle size and size distribution. The results show that higher laser fluence produces a larger mean size of nanoparticles with a broader size distribution.