Title: Slippery liquid-infused porous surfaces having improved stability

Abstract

Methods and articles disclosed herein relate to liquid repellant surfaces having selective wetting and transport properties. An article having a repellant surface includes a substrate comprising surface features with re-entrant curvature and an immobilized layer of lubricating liquid wetting over the surface features. The surface features with re-entrant curvature can be designed to provide high repellency even after failure or removal of the immobilized layer of lubricating liquid under certain operating conditions.

Inventors:

Aizenberg, Joanna; Vogel, Nicolas

Issue Date:

2017-04-25

Research Org.:

Harvard Univ., Cambridge, MA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1353081

Patent Number(s):

9630224

Application Number:

14/414,684

Assignee:

President and Fellows of Harvard College

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B08 - CLEANING B08B - CLEANING IN GENERAL

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

Show more

B - PERFORMING OPERATIONS B08 - CLEANING B08B - CLEANING IN GENERAL

B08B17/065 - {the surface having a microscopic surface pattern to achieve the same effect as a lotus flower}

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

B05D5/08 - to obtain an anti-friction or anti-adhesive surface

C - CHEMISTRY C09 - DYES C09D - COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS

C09D5/1681 - {Antifouling coatings characterised by surface structure, e.g. for roughness effect giving superhydrophobic coatings or Lotus effect}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

Y10T428/24355 - Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]

Show less

DOE Contract Number:  

AR0000326

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Jul 12

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE