Nanoelectronics are based on the application of nanotechnology in the field of electronics and electronic components. Although the term Nanoelectronics may generally mean all the electronic components, special attention is given in the case of transistors. These transistors have a size lesser than 100 nanometers. Visibly, they are very small that separate studies must be made for knowing the quantum mechanical properties and inter-atomic design. As a result, though the transistors appear in the nanometer range, they are designed through nanotechnology. Their design is also very much different from the traditional transistors and usually falls in the category of one dimensional nanotubes/nanowires, hybrid molecular electronics, or advanced molecular electronics. This technology is said to be the next future, but its practicality is near to impossible even now that they may be difficult to emerge soon.