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	Center for Nonlinear Studies
	Home  ▶ People   Current   Affiliates   Alumni   Visitors   Students  ▶ Research   ICAM-LANL  ▶ Publications   2007   2006   2005   2004   2003   2002   2001   2000   <1999  ▶ Conferences   Workshops   Sponsorship  ▶ Talks   Colloquia   Seminars   Quantum Lunch   CMS Colloquia   Archive   Kac Lectures   Dist. Quant. Lecture   Ulam Scholar   Colloquia     Jobs  ▶ Students   Summer Research   Graduate Positions  ▶ Visitors   Description  ▶ Services   General   PD Travel Request     History of CNLS     Maps, Directions   CNLS Office   T-Division   LANL				Monday, March 10, 20081:00 PM - 2:00 PMCNLS Conference Room (TA-3, Bldg 1690) Seminar The mystery of blinking dots Pavel FrantsuzovDepartment of Physics, University of Notre Dame A striking puzzle was raised eight years ago by the spectroscopic experiments on single colloidal quantum dots (QDs). The emission intensity of the single QD under the continuous excitation intensively switches on and off (blinks). The distribution of the duration times has the power law behavior over 6 decades of time. This behavior is unchanged for the different temperatures, radii, laser intensities, materials, and atmospheric conditions. The discovery of the molecular mechanism of such long-correlated phenomena in single nanoparticle represents a great challenge. I intend to present the history of solving this amazing puzzle which looks like something out of a detective novel. Host: Andrei Piryatinski, T-14/CNLS