Effect of LASER on the Synthesis of Gold Nanoparticles with Reference to Geometries

Shweta Yadav,Soam Prakash

doi:10.4236/anp.2018.74006

Abstract

Problem Statement: In the current study the effort was being made to investigate the effect of LASER light on the shape and geometries of Gold Nanoparticles. Light is an important parameter that plays significant role in the formation of nanoparticles; in this study LASER lights of selected wavelengths and colors have been used for the exposure of Gold Nanoparticles. The possibilities to manipulate the geometries of Gold Nanoparticles by altering the colors and wavelengths of LASER have been studied with reference to their efficacy against Culex quinquefasciatus. Approach: In the experimental setup four black boxes are used with no exposure to light sources. Three LASER with selected wavelengths and colors were fixed in the boxes at a specific angle, and then the nanoparticle solution was allowed to react. The micrographs of the Gold nanoparticles have been evaluated through the Transmission Electron Microscope (TEM). Results: The TEM images have shown formation of different shapes of nanoparticles due to exposure in different colors and wavelengths of LASER. Thus it explains that the wavelength and colour of the light plays a decisive role in the formation of the shapes and geometries of the nanoparticles.

Highlights

Nanotechnology is defined as the “the designing, fabricating and characterization, production and application of structures, devices and systems by controlling shape and size at the nanoscale”
Problem Statement: In the current study the effort was being made to investigate the effect of LASER light on the shape and geometries of Gold Nanoparticles
There are methods of synthesis of size and shape controlled nanoparticles by Laser ablation techniques [3], but in the current study the synthesized Gold nanoparticles are being exposed to different wavelengths and colors of Laser

Summary

Introduction

Nanotechnology is defined as the “the designing, fabricating and characterization, production and application of structures, devices and systems by controlling shape and size at the nanoscale”. Further nanotechnology research has focused on understanding the correlation between the roles of different physical parameters the optical, electrical, and magnetic properties of nanomaterials with respect to their size, shape, and geometries. There are methods of synthesis of size and shape controlled nanoparticles by Laser ablation techniques [3], but in the current study the synthesized Gold nanoparticles are being exposed to different wavelengths and colors of Laser. This alteration plays a tremendous role in the formation of different geometries of Gold nanoparticles. In the present investigation we are exploiting the selected wavelengths of Laser lights and the effect induced on the shapes of Gold nanoparticles was observed

Synthesis of Gold Nanoparticles

Synthesis of AuNPs in the Black Box Equipped with LASER Light

Exposure of Synthesized Nanoparticles under the LASER Beam

Characterisation of the Synthesized Nanoparticles

Results and Discussions