	US 12,076,748 B2
	Slippery rough surfaces
Xianming Dai, University Park, PA (US); Birgitt M. Boschitsch, University Park, PA (US); Jing Wang, University Park, PA (US); Tak-Sing Wong, University Park, PA (US); and Nan Sun, University Park, PA (US)
Assigned to THE PENN STATE RESEARCH FOUNDATION, University Park (PA)
Filed by THE PENN STATE RESEARCH FOUNDATION, University Park, PA (US)
Filed on Aug. 27, 2019, as Appl. No. 16/551,895.
Application 16/551,895 is a continuation of application No. 15/568,639, granted, now 10,434,542, previously published as PCT/US2016/028959, filed on Apr. 22, 2016.
Claims priority of provisional application 62/152,532, filed on Apr. 24, 2015.
Prior Publication US 2019/0381534 A1, Dec. 19, 2019
Int. Cl. B05D 5/08 (2006.01); B05D 3/00 (2006.01); B05D 3/10 (2006.01); B05D 5/02 (2006.01); B08B 17/06 (2006.01); B29C 59/02 (2006.01); B32B 3/30 (2006.01)

CPC B05D 5/08 (2013.01) [B05D 3/00 (2013.01); B05D 5/02 (2013.01); B08B 17/065 (2013.01); B29C 59/022 (2013.01); B32B 3/30 (2013.01); B05D 3/101 (2013.01); B29C 2059/023 (2013.01); B29K 2995/0092 (2013.01); B29K 2995/0093 (2013.01)]

10 Claims

1. A method of preparing a slippery rough surface, the method comprising:

texturing a surface of a substrate with a plurality of raised first elements and a plurality of second elements thereon;

silanizing the textured surface through liquid phase silanization; and

applying a hydrophobic and oleophilic liquid lubricant layer over the plurality of raised first elements and between the plurality of second elements to maintain a lubricant on the silanized textured surface,

wherein the liquid lubricant layer is conformal over the plurality of raised first elements and has a uniform thickness over the plurality of raised first elements, and

wherein the slippery rough surface maintains droplet mobility in a Wenzel state.