Presenter: Prof. Petra Rudolf (Zernike Institute for Advanced Materials, University of Groningen)
Topic: See atoms move in real time: ultrafast electron diffraction
Time: 10:00AM, Oct. 13th (Thursday)
Location: Conference Room B, BLDG 909-1F
Time-resolved electron diffraction is a unique tool for providing direct and detailed information on the structural dynamics of solid surfaces, nano-sized materials, molecules and atomically thin layers, thanks to the high cross section for interaction between electron and matter. Femtosecond lasers are used to generate ultrashort light and electron pulses. Light initiates a process in the sample - a phase transition, an electronic excitation or simply a temperature jump - and by recording snapshots of the electrons diffracted from the sample in a stroboscopic fashion, one can image the photo-induced motion of the structure.
In this talk I shall try to give a taste of the immense possibilities of ultrafast electron diffraction, illustrating how this novel technique opens the door to physical understanding of many aspects of light-matter interaction such as out of equilibrium structural phase transitions, melting, controlled nanoscale mechanical phenomena, and creation of coherent phonons.
Petra Rudolf was born in Munich, Germany. She studied Physics at the La Sapienza, University of Rome, where she specialized in Solid State Physics. In 1987 she joined the National Surface Science laboratory TASC INFM in Trieste for the following five years, interrupted by two extended periods in 1989 and 1990/1991 at Bell Labs in the USA, where she began to work on the newly discovered fullerenes. In 1993 she moved to the University of Namur, Belgium where she received her PhD in 1995 and then quickly progressed from postdoctoral researcher to lecturer and senior lecturer before taking up the Chair in Experimental Solid State Physics at the University in Groningen in 2003. Her principal research interests lie in the areas of condensed matter physics and surface science, particularly molecular motors, graphene and other 2D solids, organic thin films and inorganic-organic hybrids. She has published 217 peer-reviewed articles and 28 book chapters, and given 80 invited talks at international / national conferences.
Dr. Rudolf serves on the editorial boards of the New Journal of Physics and of EPL. She was the President of the Belgian Physical Society in 2000/2001 and was elected Fellow of the Institute of Physics (2001), Member of Merit of the Dutch Physical Society (2006), Fellow of the American Physical Society (2010) and member of the European Academy of Sciences and Arts (2015). For her work on molecular motors she received the 2007 Descartes Prize of the European Commission. In 2013 she was appointed Officer in the Order of Orange Nassau by H.M. Queen Beatrix of the Netherlands.
Contact: Prof. Lifeng Chi