Abstract - Nanotechnology has great impact in almost every field of life. Nanotechnology deals with the development of machines and new components at cellular scale. Its possibilities are limitless. For example: Nano-assembler assembles the molecules at extremely fast and atomic level. In literature, smart paint is used to change the color scheme of the color coated substances. This is a result of implementation of nanotechnology. Other example of nanotechnology is the advancement in desktop of computer systems. Pads are now imbedded into wrists and one can easily carry the systems anywhere. It has great impact in the electronics, computer world, artificial intelligence, mechanical engineering, automobiles, electronics, military applications, etc. It is made possible in nanotechnology by engineering components at atomic or molecular scale. The advancement of device technology and the growth of the electronics market were intertwined in the past and probably will continue to be in the future. This paper will survey and explain about Nano-electronics and Nano-Electronic Devices, Solid state devices, Tunneling devices and Molecular devices.
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