Dear students, dear colleagues Please join us for tomorrow's colloquium by Roberto Merlin Department of Physics, University of Michigan, USA who will talk about Negative Refraction, Radiationless Interference and Subwavelength Focusing: The Quest for the Superlens Please visit our web page http://www.colloquium.phys.ethz.ch for details. Best regards Thomas Gehrmann Michael M. Meyer Juerg Osterwalder Renato Renner