CaltechAUTHORS
  A Caltech Library Service

Crystal Growth in the Presence of Surface Melting: Novel Behavior of the Principal Facets of Ice

Libbrecht, K. G. and Rickerby, M. E. (2012) Crystal Growth in the Presence of Surface Melting: Novel Behavior of the Principal Facets of Ice. , Pasadena, CA. (Submitted) http://resolver.caltech.edu/CaltechAUTHORS:20120917-091902007

[img]
Preview
PDF - Submitted Version
See Usage Policy.

810Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20120917-091902007

Abstract

We present measurements of the growth rates of the principal facet surfaces of ice from water vapor as a function of supersaturation over the temperature range −2 ≥ T ≥ −40 C. Our data are well described by a dislocation-free layer-nucleationmodel, parameterized by the attachment coefficient as a function of supersaturation α(σ) = Aexp(−σ_0/σ). The measured parameters A(T) and σ_0(T) for the basal and prism facets exhibit a complex behavior that likely originates from structural changes in the ice surface with temperature, in particular the onset and development of surface melting for T > −15 C. From σ_0(T) we extract the terrace step energy β(T) as a function of temperature for both facet surfaces. As a basic property of the equilibrium ice surface, the step energy β(T) may be amenable to calculation using molecular dynamics simulations, potentially yielding new insights into the enigmatic surface structure of ice near the triple point.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1208.5982arXivUNSPECIFIED
Additional Information:This work was supported in part by the California Institute of Technology and the Caltech-Cambridge Exchange (CamSURF) program.
Funders:
Funding AgencyGrant Number
CaltechUNSPECIFIED
Caltech-Cambridge Exchange (CamSURF) ProgramUNSPECIFIED
Record Number:CaltechAUTHORS:20120917-091902007
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120917-091902007
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34127
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Sep 2012 18:07
Last Modified:26 Dec 2012 16:11

Repository Staff Only: item control page