Patent ID: 11942321
Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
Field: Machine tools (Mechanical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A method for crystallizing a thin film, the method comprising:
providing a thin film;
providing a laser beam producing a spot on the thin film;
continually translating the laser beam in a first direction at a first rate while irradiating overlapping regions of the thin film to generate a molten zone by applying a laser pulse in each region, each laser pulse applied before a previously irradiated region has been fully solidified;
propagating the molten zone along the first direction by initiating melting in the leading edge of the overlap irradiated region; and
allowing the molten zone to cool and solidify and form the crystalline region in the trailing edge of the region,
wherein the first rate is faster than a rate of solidification of the molten zone.