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: Due to the huge power consumption and expensive fabrication methods required, down scaling silicon devices to sub-100 nm dimensions is becoming very unattractive. On the other hand, it is easier to build electronic circuits using molecules since they are small and their properties can be tuned. In this review, we first discuss the building blocks of molecular electronics. We then describe how these building blocks can be used to build single molecule based digital logic such as AND, OR and XOR gates. The distinction of these molecular electronic building blocks is that for first time, (i) the Tour wires are used as the conductive backbone for the rectifying junctions, (ii) donor/acceptor principles are implemented in the molecular wire itself and (iii) the logic gates are realized using molecular rectifying diodes embedded in the molecular conducting wire itself.
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The Moore’s LawThe Moore’s Law::The Moore’s Law states that, “The number of transistors
that can be implemented per chip doubles every 1.5 years because of shrinking feature size & growing die size.”
The Question “?”The Question “?”
[Molecular Diode’s structure]
[Schematic Molecular Diode]
[Molecular Diode in forward bias]
[Molecular Diode in Reverse bias]
Ckt DiagramCkt Diagram
StructureStructure
Ckt DiagramCkt Diagram
StructureStructure
The size of devices can be reduced to nanometer scales
The cost of Fabrication decreases as these materials are easily
fabricated in chemical labs
Packaging becomes simpler
Durability, Efficiency and Error immunity increases on
unimaginable scale
Tuning of functionality is easier as polymers don’t loose their
characteristics as swiftly as semiconductors
Since Polymers are used, compatibility also increases
A wide Horizon of fields is open for
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