Molecular_Electronics (1)
-
Upload
navjyoti-sharma -
Category
Documents
-
view
120 -
download
0
Transcript of Molecular_Electronics (1)
FETGKV TECHNOVATIONS
A Presentation
on MOLETRONICS-AN INVISIBLE
TECHNOLOGYSubmitted by
Navjyoti Sharma
BTECH II YEAR Electrical Engineering
Overview
1. What is Molecular Electronics?
2. Advantages of Molecular Electronics
3. Molecular Switch
4. Issues
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.
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.
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.
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.
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
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.
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.
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
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.