TINY DEVICES- NANO - THE EMERGING WORLD TECHNOLOGY

Abstract

The ward “nano” comes from a Greek word, í ?í ï ò, that means “dwarf”. The above ward is usually mentioned as International System of Units (SI) to consider as a factor of 10-9. If “nano” may consider as meter (m) then 1 nm (nanometer) = 10-9 meter. Anyhow , “nano” may considered a “very small” particle. Moreover, it is very known factor that individual atoms are smaller than 1 nm (1 nanometer) in diameter . If we like to select 1nm material where 10 hydrogen atoms should be present in the row. Naturally, a typical virus is about 100 nm in diameter and a bacterium is about 1000 nm in length( head to tail ) . This sophisticated nanoscale materials can observe through Atomic Force Microscope and also by Scanning Tunneling Microscope. This atom scale structure exhibits a tremendous functions in every sphere of life processes. The sophisticated phenomenon of tiny small particles will be discussed in the following text.