Single molecule conductance
Some of the best fundamental science of the modern era and some of the most technologically significant device developments have relied on many years of investment in III-V semiconductor heterostructure two dimensional electron gases.
A central challenge of molecular nanoelectronics is to fabricate molecules that can replace, or at least augment, present Si-based technology to function as interconnects, switches, transistors or more complex devices.
If a molecular assembly can be made sufficiently complex to integrate more than one device function, then entirely new nanoelectronic functionalities might open up.
The unique properties of porphyrin-based molecular nanowires make it interesting for molecular nanoelectronics. With colleagues at Oxford University (Harry Anderson group) who synthesise conjugated porphyrin oligomers with controlled length and functionality, and at Liverpool University (Richard Nichols and Simon Higgins) we have measured electrical properties of both porphyrin-based molecular nanowires and other molecules, using scanning tunnelling microscopy.
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