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From free-flying fullerenes to nanoelectromechanical devices

Event Details

Event Dates: 

Thursday, November 5, 2015 - 4:00pm

Seminar Location: 

  • JILA Auditorium

Speaker Name(s): 

Eleanor Campbell

Speaker Affiliation(s): 

Edinburgh University
Seminar Type/Subject

Scientific Seminar Type: 

  • JILA Public Seminar

Event Details & Abstract: 

My group has been studying various aspects of the properties of carbon nano materials for many years. I will start by giving a brief overview of early fullerene collision and ns laser studies followed by more recent angle-resolved fs laser photoelectron spectroscopy studies, combined with Rydberg Fingerprint Spectroscopy that probe the dynamics of thermal electron emission from fullerenes and the properties of Rydberg-like excited states (often called SAMOs: SuperAtom Molecular Orbitals). Unlike normal molecular Rydberg states, the charge density of the SAMOs is centred on the middle of the hollow fullerene cage rather than on the atomic cores. Comparison of the experimental binding energies and photoelectron angular distributions of various fullerenes, including endohedral species, with TD-DFT calculations provides a very stringent test of the theoretical approaches as well as providing insight on electron correlation and cage shielding effects.  

Carbon nanotube studies have focused on the growth, fabrication and characterisation of nanoelectromechanical devices. If time allows, I will show some examples of our growth studies using a local micro-scale heater and a local deposition technique using nano fountain pen lithography as well as some examples of nanoelectromechanical devices.