Abstract

AN OVERVIEW ON NANOTECHNOLOGY

P. Divya*, Dr. A. Seetha Devi and M. Sri Rekha

ABSTRACT

This chapter explores the basic definitions for nanotechnology, and sketches a concept system for the field. Nano biotechnology is the application of nanotechnology in biological fields. Nanotechnology is a multidisciplinary field, which covers a vast and diverse array of devices derived from engineering, biology, physics and chemistry. The associated research and applications are equally diverse, ranging from extensions of conventional physics to completely new approaches based upon developing new materials with new dimensions on Nano scale. Nanotechnology explores electrical, optical, and magnetic activity as well as structural behavior at the molecular and sub molecular level. It has the potential to revolutionize a series of medical and biotechnology tools and procedures so that they are portable, cheaper, safer and easier to administer. The nanoparticles are generally classified into the organic, inorganic and carbon based particles in nanometric scale that has improved properties compared to larger sizes of respective materials. The nanoparticles show enhanced properties such as high reactivity, strength, surface area, sensitivity, stability, etc. because of their small size. The nanoparticles are synthesized by various methods for research and commercial uses that are classified into three main types namely physical, chemical and mechanical processes that has seen a vast improvement over time.

Keywords: Nano particles, Method of preparation, Applications.