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Introduction to nano technology
- 1. INTRODUCTION NANOTECHNOLOGY By G. MAHALAKSHMI MALINI AssistantProfessor, ECE Department, Faculty of Engineering, Avinashilingam Institute for Home Science and Higher Education for Women
- 2. CONTENTS Introduction to Nanotechnology Advantagesof Nanotechnology Disadvantages of Nanotechnology
- 3. History • The firstever concept was presented in 1959 by the famous professor of physics Dr. Richard P. Feynman. • The term “Nano-technology” had been coined by Norio Taniguchi in 1974.
- 4. DEFINITION OF NANOTECHNOLOGY Whatis Nano? Nano – A prefix from Greek word nano – meaning dwarf Extremely small In the names of units of measure – one billionth Nano meter scale – one billionth of a meter (10-9 m)
- 5. Contd…. What is technology? Technology– the brach of knowledge that deals with creation in the fields of: Engineering Industrial arts Applied Science Pure Science
- 6. Contd…. What is Nanotechnology? Nanotechnology is the study of manipulating matter on an atomic scale. Nanotechnology refers to the constructing and engineering of the functional systems at micro level or we can say at atomic level
- 7. Contd…. What is Nanoelectronics? Nanoelectrnics is one of the major technologies of Nanotechnology. It plays vital role in the fiield of engineering and electronics. Nanoelectronics make use of scientific methods at atomic scale for developing the Nano machines. The main target is to reduce the size, risk factor and surface areas of the materials and molecules. Machines under nano electronic process undergoes the long range of manufacturing steps each with accurate molecular treatment.
- 9. Macro, Micro, orNano? A honey bee is approximately 12nm long A human hair is 60 to 100 micrometers in diameter The DNA helix is 0.002 micrometers wide or 2nm wide.
- 10. Macro VS. Micro– Size Devices Compared to macroscopic devices micro- size devices are Much smaller, Much higher, More energy efficient, and Constructed with fewer materials. In equivalent applications, micro exceed Marco devices in Reliability, Efficiency, Selectivity, Response time, and Energy consumption
- 11. Micro VS. Nanotechnology Inaddition to the actual size of the objects, fabrication another primary difference between micro and nanotechnology. Nanotechnology uses what is refered to as the “bottom up” approach to fabrication. Microtechnology uses the “ top down” approach.
- 12. Applications of Nanotechnology InnovativeApplication Energy Medicine and drugs Nano Technology Nano Devices Optical Engineering Defense and Security Bio - Engineering Commerce Nano Fabrics
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- 21. Disadvantages loss ofjobs (in manufacturing, farming, etc) Carbon Nanotubes could cause infection of lungs. Oil & diamonds could become worthless Atomic weapons could be more accessible and destructive.