Browsing by Author "Syed Danial Naseer"

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    A study of copper nano-particles by laser ablation method in air and liquid
    (UMT, Lahore, 2021) Syed Danial Naseer
    The use of copper nanoparticles which acts as anti-biotic, antimicrobial, and anti-fungal agent in materials such as plastics, coatings, and textiles has been studied. Cu nanoparticles have extraordinary properties in the ultraviolet and visible spectrums, as well as in electrical, catalytic, thermal, and antibacterial applications. This is due to quantum effects and a high surface-to volume ratio. It is now being investigated how copper nanoparticles can be used in applications to uncover their potential dielectric and magnetic characteristics as well as their opto-electrical, imaging, catalytic and biological and bioscience capabilities. Creating copper nanoparticles is possible through a variety of processes, including chemical, physical, and biological approaches. Every approach has its own set of disadvantages and limits, and the most widely used technique is no exception. For the purpose of avoiding contamination and impurity contamination in the synthesized products, the researchers employed various types of laser assisted technologies, such as laser ablation of solids in the liquid phase (LASL) and laser ablation of the solids in open air (LASOA), in this work. These technologies are viable alternatives to chemical reduction methods, particularly when considering their potential applications in biological systems. The Nd:YAG laser used in this work is a pulsed Q-switched Nd:YAG laser. An investigation has been conducted on the impact of various processing parameters on Np's form, size, and crystalline phase. There were only pure Cu nanoparticles recovered, and they were all of the same spherical form and homogeneous size distribution. It is necessary to study the morphology, size, along with the optical features of the colloidal solution nanoparticles created using a Transmission Electron Microscopy (TEM).