University of Birmingham > Talks@bham > Physics and Astronomy Colloquia > Antennas for Molecules

Antennas for Molecules

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If you have a question about this talk, please contact Amaury Triaud.

Detection of individual molecules is commonplace in biology and chemistry for nanoscale imaging and tracking. Unfortunately, the dependence on fluorescence comes with low signals and slow dynamics. Optical (nano)antennas can help to brighten up molecular signals. Here first, I will show how nanoscale control of molecule-antenna interaction gives 100-1000 times enhancement, high real space resolution (20-40 nm), very faster radiative decay on picosec timescale and even strong coupling. Single biomolecules, which otherwise are simply invisible, become discernible. Next, I will show how combination with tailored ultrafast femtosecond pulses allows following excited state vibronic dynamics and energy transfer, all at the level of a single molecule. These nanophotonic technologies allow uncovering the nature of nanoscale ultrafast energy transfer in natural light-harvesting system in their ambient conditions.

This talk is part of the Physics and Astronomy Colloquia series.

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