Physics Colloquium: High-Resolution Thermal Expansion of Single-Crystalline H2O Ice
- Friday, September 8, 2017 from 4:10pm to 5:00pm
- Barnard Hall, Room 108 - view map
Professor John J. Neumeier
Department of Physics
Montana State University
The thermal expansion of H2O Ice (the common form of ice, with the hexagonal Ih-phase) has never before been measured with the resolution that is possible today. We recently completed thermal expansion measurements (5 K < T < 270 K) of single-crystalline H2O ice using a capacitance-based device. The relative resolution of the measurements is 1 part per billion, which is at least 1000 times higher than prior measurements. The methods and results of our experiments will be presented. The discussion will center on an interesting phase transition near 100 K and a minimum in the volume of ice near 60 K.
This project was made possible by the efforts of David Buckingham, Sueli Masunaga, Yi-Kuo Yu, and Forrest Gile. National Science Foundation Grant DMR-1204146 is gratefully acknowledged.
Host: Rufus Cone
* Refreshments served in the Barnard Hallway opposite Barnard 108 at 3:45 *
* Free and open to the public *