| Author | P. Balasubramanian, C. Zheng, T. Tan, G. Kane, A. M. Maniatty, J. T. Wen, R. Hull |
|---|---|
| Title | Substrates with programmable heater arrays for dynamic control of the microstructure of polycrystalline films: Towards real time control of grain growth in metals |
| Year | 2016 |
| Journal | MRS Advances |
| Volume | 1 |
| Pages | 1947-1952 |
| Issue | 26 |
| Abstract | We describe an integrated experimental – simulation – control theory approach designed to enable adaptive control of microstructural evolution in polycrystalline metals. A micro-heater array, containing ten addressable channels, is used to create desired temperature profiles across thin polycrystalline films in situ to a scanning electron microscope (SEM). On heating with controlled temperature profiles, the evolution of grain growth within the film can be continuously monitored and compared to Monte Carlo simulations of trajectories towards a desired microstructure. Feed-forward and feedback control strategies are then used to guide the microstructure along the desired trajectory. |
| PDF File |  Download |
| DOI Link | 10.1557/adv.2016.236 |