US 12,145,816 B2
Continuous manufacturing of surface wrinkle features
Daeyeon Lee, Wynnewood, PA (US); Kathleen Stebe, Penn Valley, PA (US); Shu Yang, Blue Bell, PA (US); and Xu Zhang, Claymont, DE (US)
Assigned to The Trustees of the University of Pennsylvania, Philadelphia, PA (US)
Appl. No. 17/053,909
Filed by THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, Philadelphia, PA (US)
PCT Filed May 24, 2019, PCT No. PCT/US2019/033926
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2019/226995, PCT Pub. Date Nov. 28, 2019.
Claims priority of provisional application 62/770,610, filed on Nov. 21, 2018.
Claims priority of provisional application 62/676,319, filed on May 25, 2018.
Prior Publication US 2021/0238001 A1, Aug. 5, 2021
Int. Cl. B65H 37/02 (2006.01); H01L 31/0216 (2014.01); H01L 31/0236 (2006.01)
CPC B65H 37/02 (2013.01) [H01L 31/02168 (2013.01); H01L 31/0236 (2013.01); B65H 2301/51145 (2013.01); B65H 2701/124 (2013.01); B65H 2701/172 (2013.01); B65H 2801/87 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method, comprising:
(a) with a working material that comprises an elastomeric material and a second material that defines the uppermost portion of the working material,
effecting a stress within the working material, the effecting being accomplished by transiently contacting the elastomeric material to a continuously revolving, curved support substrate,
at least partially releasing the stress within the working material so as to give rise to a plurality of persistent wrinkles in the uppermost portion of the working material, or
(b) applying a stimulus so as to change a mechanical property of an uppermost portion of a working material that comprises an elastomeric material,
effecting a stress within the working material, the effecting being accomplished by transiently contacting the elastomeric material to a continuously revolving, curved support substrate, and
at least partially releasing the stress within the working material so as to give rise to a plurality of persistent wrinkles in the uppermost portion of the working material; or
(c) any combination of (a) or (b).