Ice Surface Dynamics

Tufts University, Medford MA

Investigators

Abstract

In this project funded by the Chemical Structure, Dynamics and Mechanisms A Program and the Chemical Measurement and Imaging Program, Professor Mary Jane Shultz of Tufts University is examining single-crystal ice surfaces. Single crystal studies revolutionized models of catalysis leading to more efficient processes ranging from fixing nitrogen to make fertilizers that enable the Earth to sustain a growing population, to the catalytic converter in automobiles that vastly improve air quality. Similarly, detailed images for single crystal ice surfaces are expected to impact understanding of interactions that govern biological, atmospheric, and geological processes. This project combines emerging ability to grow single-crystal ice selecting any face with cutting-edge instrumentation to measure interactions at the ice surface. Due to its hexagonal structure, ice is uniaxial. It would not be surprising to find that both energy transfer and adsorbate interaction differ from face to face as well as changing with orientation. Ice is a wonderful material for connecting the macroscopic observable structure with the underlying molecular-level structure. This connection is fascinating to multiple age groups, making research laboratory results accessible to wide audiences. Thus not only will technique development have a broad impact on the study of soft material interfaces, it will also connect everyday experiences such as driving a car in a snowstorm with the environmental impact of that car's exhaust.