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Interpretation and applicability of ultra-high resolution STM and NC-AFM to the study of molecular and 2D systems

Dates:31 March 2021
Times:13:00 - 14:00
What is it:Seminar
Organiser:Photon Science Institute
Who is it for:University staff, Current University students
Speaker:Dr Adam Sweetman
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  • Photon Science Institute

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  • By Photon Science Institute

Join us for this PSI seminar with guest speaker Dr Adam Sweetman. The last decade has seen a dramatic improvement in our ability to characterize surfaces at the atomic scale via scanning probe microscope (SPM) techniques. In particular, noncontact atomic force microscopy (NC-AFM) is now routinely capable of obtaining sub-molecular resolution, readily resolving the carbon backbone structure of planar organic molecules adsorbed on metal substrates in real space. These developments have arisen in part due to the now routine combination of scanning tunnelling microscopy (STM) and NC-AFM into the same instrument, operation at cryogenic temperatures, and the controlled functionalization of the scanning probe tip by a carbon monoxide (CO) molecule or similar known passivating moiety. In this talk, Dr Sweetman will outline the recent developments in high resolution SPM, and highlight its applicability to the cutting-edge study of the atomic scale chemical, geometric, and electronic structure of molecules, 2D materials, and semiconductor interfaces. He will also highlight how it is possible to move beyond conventional “imaging” experiments, and use controlled functionalization to perform unique ‘lab on a tip’ experiments, and explore the prospects for future developments in the field.

Speaker

Dr Adam Sweetman

Organisation: University of Leeds

Biography: Adam Sweetman is a Royal Society University Research Fellow at the University of Leeds, UK. He obtained his PhD from the University of Nottingham in 2010, and subsequently held postdoctoral research positions at the same institute. In 2012 he held a JSPS Short term fellowship at NIMS in Tsukuba, Japan, and from 2014-2017 was awarded a Leverhulme Early Career Fellowship. Since 2018 he has held his current position at the University of Leeds, where his research interests are focused on understanding the nature of interatomic and intermolecular forces via ultra-high-resolution scanning probe microscopy techniques.

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Jonathan Rodd

jonathan.rodd@manchester.ac.uk

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