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Physics and Astronomy

Please note the unusual time and location:


Physics & Astronomy Colloquium

3:15 PM, Friday, March 23, 2012
Room 139, Chem-Phys Building

Dr. Paul J. Steinhardt
Department of Physics and Princeton Center for Theoretical Science
Princeton University

"ONCE UPON A TIME IN KAMCHATKA: THE EXTRAORDINARY SEARCH FOR NATURAL QUASICRYSTALS''

A quasicrystal is an exotic state of matter with an atomic structure analogous to a Penrose tiling, exhibiting symmetries forbidden to crystals, such as five-fold symmetry in the plane and icosahedral symmetry in three dimensions. The concept of quasicrystals was first introduced twenty-seven years ago and over a hundred types have synthesized in the laboratory since. But could Nature have beaten us to the punch? The campaign to answer that question makes for one of the stranger scientific stories you are ever likely to hear.

Refreshments will be served in CP 179 at 3:00 PM