Professor Håkan Rensmo
Tuesday, September 19 at 3:00pm in VW104
New materials and material combinations for the use in solar cells and Li-ion batteries has been subject of substantial academic and commercial research over the last decades. The efficiency of the conversion process in these systems is largely dependent on the properties of the interfacial region including material organisation as well as the energy matching between the different condensed phases including inorganic materials, molecular materials and electrolytes. Insight into the material organisation and electronic structure is therefore crucial in order to understand and optimize the function. X-ray based techniques such as photoelectron spectroscopy (PES) are powerful for obtaining such information at an atomic level due to the possibility for element specificity. This presentation discusses how synchrotron based PES can be used for understanding energy related materials and the interactions between them with.
This Week: April 12th Physics Elemental Battleship
Join us for game time to play the well known game Battleship … with a twist. Also, start preparing your armada to come vote for you for officer election next week.
Next Week: April 19th Liquid Nitrogen Ice-cream Party & Officer Elections
Come join us for the last SPS meeting of the year. We will be making ice-cream with liquid nitrogen. What else could you possibly want to do on a Wednesday afternoon? While you please your taste buds, you can also please your ears to the melodious tone of the various potential officer speeches.
Last Week: April 24th Physics Finals Review Session
AAAHHHHHHHHHHHHHHHHHHHHHHHH, FINALS!! PHYSICS!!!!! Let us help you prepare for your physics finals by supplying example problems, answering questions, and sustaining your caloric intake. Expect food, physics, and Jason.
Probing High Temperature Superconductors with X-rays
Friday, April 7 at 3 pm in VW 104
Clement Burns Ph.D., Western Michigan University
Superconducting materials display a variety of unusual phenomenon, including the ability to carry electrical currents without resistance and the expulsion of magnetic fields from their volume. Many of these systems are well understood, but over the last couple of decades several new classes of exotic superconductors have been discovered which cannot be explained with current theory. In this talk I will discuss recent work using a free electron laser x-ray source at the SLAC accelerator laboratory to study the high temperature superconductor YBa2Cu4O7-x. Electrons in these systems show a new type of charge order which competes with the superconductivity, and this charge ordering may play an important role in the properties of these materials.