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
"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