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Title: Fabrics coated with lubricated nanostructures display robust omniphobicity

The development of a stain-resistant and pressure-stable textile is desirable for consumer and industrial applications alike, yet it remains a challenge that current technologies have been unable to fully address. Traditional superhydrophobic surfaces, inspired by the lotus plant, are characterized by two main components: hydrophobic chemical functionalization and surface roughness. While this approach produces water-resistant surfaces, these materials have critical weaknesses that hinder their practical utility, in particular as robust stain-free fabrics. For example, traditional superhydrophobic surfaces fail (i.e., become stained) when exposed to low-surface-tension liquids, under pressure when impacted by a high-velocity stream of water (e.g., rain), and when exposed to physical forces such as abrasion and twisting. We have recently introduced slippery lubricant-infused porous surfaces (SLIPS), a self-healing, pressure-tolerant and omniphobic surface, to address these issues. However we present the rational design and optimization of nanostructured lubricant-infused fabrics and demonstrate markedly improved performance over traditional superhydrophobic textile treatments: SLIPS-functionalized cotton and polyester fabrics exhibit decreased contact angle hysteresis and sliding angles, omni-repellent properties against various fluids including polar and nonpolar liquids, pressure tolerance and mechanical robustness, all of which are not readily achievable with the state-of-the-art superhydrophobic coatings.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Harvard Univ., Cambridge, MA (United States)
Publication Date:
OSTI Identifier:
1185184
Grant/Contract Number:
AR0000326
Type:
Accepted Manuscript
Journal Name:
Nanotechnology (Print)
Additional Journal Information:
Journal Name: Nanotechnology (Print); Journal Volume: 25; Journal Issue: 1; Journal ID: ISSN 0957-4484
Publisher:
IOP Publishing
Research Org:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Contributing Orgs:
Pennsylvania State Univ., State College, PA (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE nanostructured coating; slippery liquid-infused porous surfaces; omniphobicity; self-cleaning; fabrics