Molecular_Electronics (1)
Download as PPT, PDF2 likes1,770 views
This document discusses molecular electronics, also known as moletronics. It describes how molecules can be used as electronic components to perform the functions currently done by semiconductors. Key advantages include much smaller size, lower power needs, faster switching speeds, lower manufacturing costs, and easier manufacturing. A molecular switch is described that uses a single molecule and has two distinct states that can be triggered by light and controlled with electric fields. Issues facing molecular electronics include integrating it with silicon and directly characterizing resistance at the single molecule level due to limitations in molecular-scale imaging.
Molecular_Electronics (1)
- 1. FETGKV TECHNOVATIONS A Presentation on MOLETRONICS-AN INVISIBLE TECHNOLOGY Submitted by Navjyoti Sharma BTECH II YEAR Electrical Engineering
- 2. Overview 1. What is Molecular Electronics? 2. Advantages of Molecular Electronics 3. Molecular Switch 4. Issues
- 3. What is Molecular Electronics? Sometimes called moletronics Molecular electronics is a branch of applied physics which aims at using molecules as passive or active electronic components. These molecules will perform the functions currently performed by semiconductors.
- 4. Why use Molecular Electronics? Size Power Speed Low Manufacturing Cost Easier to Manufacture
- 5. Size Molecular Electronics is a way to extend Moore’s Law past the limits of standard semiconductor Circuits. 100X smaller than their counterparts Power / Speed Currently Transistors cannot be stacked, which makes them quite ineffecient! Molecular technology will be able to add a 3rd dimension. Femtoseconds switching times.
- 6. Manufacturing Most designs use either spin coating or Self- Assembly process. Individual Molecules can be made exactly the same by the Billions. Molecular assembly tends to occur at Room Temperature.
- 7. Molecular Switch Semiconductor switches can be made on a very small scale. Perform computational functions when placed in the right combination. Molecular switch is orders of magnitude smaller.
- 8. Molecular Chiropticene Switch One molecule in size. Switch has two distinct states Spatial Mirror images of one another. Electronically and Optically distinct Distinct but Equal Chiral property
- 9. Symmetric Amine Molecule Rapid thermal oscillation between two forms of an Amine Molecule.
- 11. Operation In practice, the switch is triggered by light and controlled with an electric field. Both of these actions can change the direction of the molecule’s dipole by 180 degrees.
- 12. Constructing the Switch In order to have control of the crossed arrow dipole vector we must: Long axis for reaction to occur Dipole vector points along this axis Transformation cannot occur at room temp.
- 13. Orientation of Dipole Vectors
- 16. Finally…….
- 17. Switch Properties Stability- Two equal but opposite energy states in these molecules affords stablility as well as reversibility. Speed- Femtosecond switching speeds Applications Plastic electronic system Biochips Economic solar cells
- 18. Problems facing Moletronics Molecular electronics must still be integrated with Silicon. Among the important issues is the determination of the resistance of a single molecule (both theoritical and experimental). It is difficult to perform direct characterization since imaging at the molecular scale is often impossible in many experimental devices.