AVS 59th Annual International Symposium and Exhibition
    Surface Science Thursday Sessions
       Session SS-ThA

Invited Paper SS-ThA3
Using Nanoscale Amorphous Solid Water Films to Create and Study Deeply Supercooled Liquid Water

Thursday, November 1, 2012, 2:40 pm, Room 22

Session: Liquid/Surface Interactions
Presenter: B.D. Kay, Pacific Northwest National Laboratory
Authors: S.R. Smith, Pacific Northwest National Laboratory
B.D. Kay, Pacific Northwest National Laboratory
Correspondent: Click to Email
Vapor deposition of water on cryogenic substrates is known to produce amorphous solid films. When heated above their glass transition (136 K) these films transform into deeply supercooled liquid water which subsequently crystallizes around 160 K. These nanoscale liquid films can be used to study processes such as diffusion, isotope exchange, and crystallization at cryogenic temperatures not attainable by conventional supercooling of the bulk liquid. Molecular beam scattering, programmed desorption (both TPD and isothermal), and vibrational spectroscopy are used to study the thermodynamics and chemical kinetics of these processes in unprecedented detail. This talk will highlight our recent advances in this area. This work was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences, and Biosciences. The research was performed using EMSL, a national scientific user facility sponsored by DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory, which is operated by Battelle, operated for the U.S. DOE under Contract DE-AC05-76RL01830.