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Chemistry and Physics of Single-Molecule Circuits

Event Details

Event Dates: 

Friday, October 7, 2016 - 4:00pm

Seminar Location: 

  • JILA Auditorium

Speaker Name(s): 

Latha Venkataraman

Speaker Affiliation(s): 

Columbia University
Seminar Type/Subject

Scientific Seminar Type: 

  • Phys Chem/Chem Phys Seminar

Event Details & Abstract: 

The proposal to create molecular analogs of circuit components dates back to the work of Aviram and Ratner from 1974, where they suggested using a single molecule as a diode circuit element in giving birth to the field of molecular electronics. This field has advanced tremendously since then; nanoscale single-molecule devices are now also used as test beds for understanding and controlling electron transfer across metal/organic interfaces. Despite the long-standing interest in creating molecular diodes, their experimental realization has been difficult, with only a handful of studies showing rectification at the single molecule level. In this talk, I will present methods to create single-molecule devices and measured their physical properties, including electronic transport and thermopower. I will then show how their molecular structure as well as the environment around these nanoscale systems can control their electronic characteristics.

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