IJPAS Vol.03 Issue-06, (June, 2016) ISSN: 2394-5710 International Journal in Physical & Applied Sciences (Impact Factor- 3.960) A Monthly Double-Blind Peer Reviewed Refereed Open Access International e-Journal - Included in the International Serial Directories International Journal in Physical & Applied Sciences http://www.ijmr.net.in email id- irjmss@gmail.com Page 11 NANOTECHNOLOGY SARITA NANOTECHNOLOGY – A BRIEF INTRODUCTION : The aim of this paper is to provide some background information on nanoscience and nanotechnology, including definitions; to identify the key properties that make nanomaterials so useful and special in human life and to provide some information about application of nanotechnology to specific fields like energy, environment, medicine etc. DEFINITION: A nanometer is 10 -9 metre. It is so surprising to know that the dot over letter “i” is approximately one million nanometers in diameter. Nanoscience is the study of phenomena on the nanometer scale. Nanotechnology manipulates matter at the atomic, molecular or macromolecular level of create and control objects on the nanometre scale, with the goal of fabricating novel materials, devices and systems that have new properties and functions because of their small size. The definition of nanotechnology is rather broad and includes both nanotechnology enabled materials (such as carbon nanotubes) and nanotechnology-enabled tools and processes. The nanometer scale is commonly indicated as 1-100 nm, but nanoscience and nanotechnology often deal with objects larger than 100 nm. The variability arises from the interdisciplinary nature of nanotechnology, which arises from the convergence of chemistry, physics, material science, engineering, molecular biology, biology and medicine. In daily routine, we deal objects studied are in the 1-100 nm length scale. Even though nanoscience is often perceived as a science of the future, it is actually the basis for all systems in our living and mineral world. We have hundreds of examples of nanoscience under our eyes daily, such as walk up side down on a ceiling, apparently against gravity, to butterflies with iridescent colours, to fireflies that glow at night. In Nature we encounter some outstanding solution to complex problems in the form of fine nanostructures to which precise functions are associated. In recent years, researchers have had access to new analytical tools to see and study those structures and related functions in depth and further stimulated the research in the nanoscience area, and has catalysed nanotechnology. So in a sense, natural nanoscience is the basis for nanotechnology.