US 12,280,448 B2
Continuous laser nanoforming methods
Ramses Valentin Martinez, West Lafayette, IN (US); and Debkalpa Goswami, West Lafayette, IN (US)
Assigned to Purdue Research Foundation, West Lafayette, IN (US)
Filed by Purdue Research Foundation, West Lafayette, IN (US)
Filed on May 3, 2024, as Appl. No. 18/654,116.
Application 18/654,116 is a division of application No. 16/810,084, filed on Mar. 5, 2020, granted, now 12,005,522.
Claims priority of provisional application 62/819,706, filed on Mar. 18, 2019.
Prior Publication US 2024/0278354 A1, Aug. 22, 2024
Int. Cl. B23K 26/356 (2014.01); B23K 26/08 (2014.01); B23K 103/00 (2006.01); B23K 103/14 (2006.01); C21D 10/00 (2006.01)
CPC B23K 26/356 (2015.10) [B23K 26/08 (2013.01); C21D 10/005 (2013.01); B23K 2103/14 (2018.08); B23K 2103/42 (2018.08); B23K 2103/52 (2018.08); B23K 2103/54 (2018.08)] 20 Claims
OG exemplary drawing
 
1. A method of transferring a metallic film to a flexible substrate using a roll-to-roll nanoforming assembly, wherein the roll-to-roll nanoforming assembly includes a nanomold, a first laser generator, and a confinement layer, the metallic film having a metal layer and an ablative layer, the method comprising:
(a) transferring the metallic film to the nanomold such that the metal layer of the metallic film contacts the nanomold and the ablative layer of the metallic film contacts the confinement layer during continuous motion of the metallic film relative to the confinement layer,
(b) directing a first laser beam, from the first laser generator, through the confinement layer onto the ablative layer of the metallic film to form a nanoformed metal from the metallic film as the metallic film moves relative to the confinement layer and the laser generator; and
(c) transferring the nanoformed metal onto the flexible substrate.