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Superoleophobic surfaces and methods of making same

A technology for products and substrates, applied in the field of superoleophobic surface and preparation thereof, to achieve the effects of simplifying production methods, reducing environmental impact, and reducing costs

Inactive Publication Date: 2015-07-08
UNIV OF WESTERN ONTARIO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the number of substrate surfaces on which these surface morphologies can be generated has been limited

Method used

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  • Superoleophobic surfaces and methods of making same
  • Superoleophobic surfaces and methods of making same
  • Superoleophobic surfaces and methods of making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] Materials and methods

[0054] Negative photoresist SU-8 (epoxy resin, cyclopentanone (as an organic solvent), triarylsulfonium salt (as a cationic photoinitiator)), negative photoresist KMPR (modified epoxy resin, cyclopentanone Pentanone, triarylsulfonium, propylene carbonate (propylene carbonate, propylene carbonate) and SU-8 developer (1-methoxy-2 propyl acetate) were purchased from MicroChem Corporation, Newton, MA, USA . 1H,1H,2H,2H-Perfluorooctyl-trichlorosilane (97%) was a product from Sigma-Aldrich. Use H 2 o 2 (30%) and H 2 SO 4 The (fuming) solution was prepared as a piranha solution (Piranha solution) at a ratio of 3:7 vol / vol. All chemicals are received ready to use. The pattern on the photomask was designed using L-Edit software and subsequently printed on chrome glass with a high-resolution image setup system (Nanofab, Alberta University). Spin coater (Solitec 5110Spinner) and lithography machine (mask aligner, mask aligner) (Karl 30Suss MA6) we...

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Abstract

Disclosed herein is a substrate having a surface modified to impart multi-scale roughness, thereby providing superhydrophobic and / or superoleophobic properties. The surface comprises a pattern of microscale pillars topped by a plurality of nanoparticles having a re-entrant convex shape. The area fraction of the surface is also selected to provide the desired superoleophobic properties. Also disclosed herein is a process for creating the modified surface comprising photolithography, optionally followed by vapour deposition. The substrates may be formed into useful articles or applied to pre-formed articles.

Description

technical field [0001] Disclosed herein are substrates having a surface morphology that is modified to impart desired oleophobic or superoleophobic properties to the surface. Surface morphology may include microscale pillars covered (topped with) nanoparticles (which may be approximately spherical). Also disclosed is photolithography for modifying the surface of a substrate to produce a desired surface morphology, which may be combined with vapor deposition. Background technique [0002] Attempts have been made to modify the surface of substrates to impart desired properties. For example, superoleophobicity has been observed to emerge on structures with multiscale roughness and reentrant / overhanging features. However, there is a need for superoleophobic surfaces with larger contact angles for organic liquids. There is a need for simplified methods for producing superoleophobic surfaces, especially methods with a reduced number of steps. There is a need for simplified met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81C1/00B81B7/04B82Y30/00C08J7/12
CPCB81B2203/0361G03F7/0037B82Y30/00G03F7/004C08J7/12B81C1/00206Y10T428/24372Y10T428/24405B81C1/00031G03F7/2024C03C2217/76B08B17/065
Inventor 杨军李庭杰马克西姆·帕利王晓龙纳塔莉·苏汉
Owner UNIV OF WESTERN ONTARIO