Preparation of Non-Agglomerated Spherical Copper Nanoparticles Using Nanosecond Pulsed Laser Ablation Technique in Ambient Nitrogen Gas

Document Type : Original Article

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Department of Physical Sciences, College of Science, Jazan University, P.O. Box. 114, Jazan 45142, Kingdom of Saudi Arabia

Abstract

The method of preparing of spherical shape copper nanoparticles (Cu-NPs) with smooth surfaces using laser ablation of a copper target while surrounded by nitrogen gas is presented. A flow of nitrogen gas is injected to the ablation cell and the stream ablated copper nanoparticles which constitute with the plasma plume above the sample surface is directed towards the deposit material holder. The formed spherical shape non - agglomerated copper nanoparticles have the advantage of not losing energy during the demagnetization process which can be used in preparation of ferromagnetic material applications. Also these copper nanoparticles support drug stability and could improve therapeutic index in biomedical fields. The formed copper nanoparticles were obtained at pulsed excimer laser parameters 193 nm, 6 ns, and 8 mJ Cu-NPs were formed. A scanning electron microscope (SEM) is used to analyze the morphology of the generated NPs. Using the laser ablation method we could:
- Directly generate spherical Cu-NPs from copper target without any preparation.
- Form non agglomerated Cu-NPs as shown by SEM.
- Produce Cu-NPs with a high distribution density and smooth surfaces shape.
Examination of Cu-NPs by using Energy Dispersive X-ray spectrometer (EDX) confirmed that the formed nanoparticles were high pure copper.

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