Leopold Infeld Colloquium
2006/2007 | 2007/2008 | 2008/2009 | 2009/2010 | 2010/2011 | 2011/2012 | 2012/2013 | 2013/2014 | 2014/2015 | 2015/2016 | 2016/2017 | 2017/2018
2010-10-21 (Thursday)
Nowa A(425), Hoża 69 at 15:30 
Prof. Jacek A. Majewski (IFT UW)Graphene future of nanoelectronics?
Graphene, a single layer of carbon atoms arranged in a honeycomb lattice, has attracted a lot of attention since its discovery in 2004. The material with the whole plethora of intriguing properties has been billed as wonder material that could one day determine the future nano-electronics, just replacing the silicon in processors. Actually, a 100 GHz field effect transistor based on graphene sheet has been announced recently.
In this lecture, we present a survey of the graphene properties that lead to intriguing physics (resembling relativistic physics) and make this material so promising candidate for future information technologies. We address the challenges of creating electronic devices built of graphene. We consider electronic structure of monolayer graphene flakes, multilayers of graphene obtained in epitaxial growth process, and recently obtained graphane (i.e., modification of graphene sheet covered with hydrogen atoms), which also is intensively studied.
2010-10-07 (Thursday)
Nowa A(425), Hoża 69 at 15:30
Dr Carsten Müller (Max-Planck-Institut für Kernphysik, Heidelberg, Germany)Lepton pair creation in intense laser fields
The creation of particle-antiparticle pairs by multiphoton absorption from intense laser fields in various configurations is discussed.Electron-positron pair creation by high-energy proton impact on a strong laser beam is considered first, including spin and recoil effects. Acomparison is drawn with pair creation in relativistic electron-laser collisions. The creation of muon-antimuon pairs is also addressed.Finally, we consider electron-positron pair creation in a standing electromagnetic wave formed by two counter-propagating laser beams.
2010-10-04 (Monday)
Sali Duża Doświadczalna, Hoża 69 at 16:30
prof. dr hab. Bogdan Mielnik (IFT UW oraz Departamento de Fisica, Cinvestav, Mexico)Podstawy mechaniki kwantowej: prawdy, półprawdy, pytania
Współczesne teorie kwantowe zrodziły się w toku trudnych polemik i nawracających wątpliwości. Czy warto zachować je w pamięci? Mój mini-wykład będzie przeglądem niektórych pytań, na które odpowiedź znamy, innych, które pozostały otwarte, innych jeszcze, których wolimy nie zadawać.