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.

Why use Molecular Electronics?

Size Power Speed Low Manufacturing Cost Easier to Manufacture

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

Symmetric Amine Molecule

Rapid thermal oscillation between two forms of an Amine Molecule.

“Asymmetrical Narcisstic Reactions”

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.

Orientation of Dipole Vectors

Potential Energy Profile

Prochiral Form

Photo Reaction

Finally…….

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.