Physics and Chemistry Joint Research Seminar

Structure and ultra-fast diffusion of cyclooctatetraene on Cu(111)

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Seminars

As part of the School of Science and Technology's Physics and Chemistry Joint Research Seminar Series, Dr Nadav Avidor, Herchel Smith Postdoctoral Fellow Cavendish Laboratory, University of Cambridge presents:Structure and ultra-fast diffusion of cyclooctatetraene on Cu(111).

  • From: Wednesday 31 October 2018, 1 pm
  • To: Wednesday 31 October 2018, 2 pm
  • Location: 015, CELS, Nottingham Trent University, Clifton Campus, Clifton Lane, Nottingham, NG11 8NS

Past event

Event details

As part of the School of Science and Technology's Physics and Chemistry Joint Research Seminar Series, Dr Nadav Avidor, Herchel Smith Postdoctoral Fellow Cavendish Laboratory, University of Cambridge presents:Structure and ultra-fast diffusion of cyclooctatetraene on Cu(111).

Abstract

Helium Spin Echo spectroscopy enables us to ‘watch’ atomic motion at surfaces in reciprocal space and correlation time - on the pico to nano second time scale.[1] The technique, which is complementary to imaging techniques both in mechanism (spectroscopy vs microscopy) and in the regime of experimental conditions (angstroms-picoseconds vs angstroms sub-seconds), provides us the means to study motion at elevated temperatures where degrees of motion are not frozen.
In my talk, I will briefly explain how helium spin-echo spectroscopy works, and present a recent study where our measurements suggest that Cyclooctatetraene diffuses on Cu(111) with two different mechanisms, suggesting that two different conformations co-exist at the surface. I will also present recent results from the diffusion of Anthraquinone at Cu(111), and discuss current challenges and future opportunities offered by the technique.
[1] Alexandrowicz, G. and Jardine, A.P., 2007. Helium spin-echo spectroscopy: studying surface dynamics with ultra-high-energy resolution. Journal of Physics: Condensed Matter, 19(30), p.305001.

All Welcome

Hosted by Dr Ian Shuttleworth

Location details

Room/Building:

015, CELS

Address:

Nottingham Trent University
Clifton Campus
Clifton Lane
Nottingham
NG11 8NS

Past event

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