US 11,654,609 B2
Engineering reversible elasticity in ductile or brittle thin films and products resulting from said engineering
Nicolas Vachicouras, Chambesy (CH); Christina Myra Tringides, Ames, IA (US); and Stephanie P. Lacour, Etoy (CH)
Assigned to ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
Appl. No. 16/465,554
Filed by ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL), Lausanne (CH)
PCT Filed Nov. 29, 2017, PCT No. PCT/EP2017/080876
§ 371(c)(1), (2) Date May 30, 2019,
PCT Pub. No. WO2018/100005, PCT Pub. Date Jun. 7, 2018.
Claims priority of provisional application 62/429,048, filed on Dec. 1, 2016.
Prior Publication US 2020/0094466 A1, Mar. 26, 2020
Int. Cl. B32B 3/26 (2006.01); B32B 15/08 (2006.01); B29C 59/00 (2006.01); H01B 13/00 (2006.01); B29C 55/02 (2006.01); B29C 55/10 (2006.01); B29D 28/00 (2006.01); B29K 79/00 (2006.01)
CPC B29C 59/007 (2013.01) [B29C 55/023 (2013.01); B29C 55/10 (2013.01); B29D 28/00 (2013.01); B32B 3/266 (2013.01); B32B 15/08 (2013.01); H01B 13/0036 (2013.01); B29K 2079/08 (2013.01); B32B 2307/202 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multilayer substrate comprising:
at least a bottom layer of electrically isolating, intrinsically non-elastic material and, on said bottom layer, a top layer of electrically conductive, intrinsically non-elastic material, said bottom and top layers forming opposite exposed main surfaces of the multilayer substrate;
a plurality of through cuts each extending through a thickness of each of said bottom and top layers, the plurality of through cuts in an unstretched state forming a pattern of open surface areas in the opposite exposed main surfaces of the multilayer substrate;
wherein each of said through cuts has projections on the opposite exposed main surfaces of said multilayer substrate, and the projections are shaped so as to comprise at least three branches extending from a common portion, each branch having a length and a width that form said open surface areas.