Far-from-Equilibrium Structures and Processes using Electromagnetic Fields: Non-Thermal Effects
Abstract
The non-thermal effects of electromagnetic fields can produce far-from-equilibrium outcomes, which cannot be achieved through conventional processing. For instance, the low temperature (~ 150 oC) crystallization of ceramic oxide (e.g., anatase TiO2) thin films by microwave radiation is a potential non-thermal effect, as conventional synthetic routes even under the same temperature profile cannot reproduce the results. The novelty of my approach to study non-thermal effects lies in using thin film growth experiments in which field interactions can be selectively localized to a desired region inside the reaction vessel (e.g. the substrate). Such experiments can systematically examine the effects of field intensity, temperatures, and reaction mechanisms at a specific point instead of in the bulk of the solution. Specifically, I will couple experimental and computational methods for temperature measurement with in situ time-resolved x-ray atomic pair distribution function (PDF) measurements and Avrami transformation kinetics to extract information regarding changes in Arrhenius parameters, structure, polarization which could be attributed to non-thermal effects.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 02, 2017
- Source ID
- FA95501710120
Entities
People
- B.reeja Jayan
Organizations
- Air Force Office of Scientific Research
- Massachusetts Institute of Technology
- United States Air Force