Superoleophobic substrates and methods of forming same

An oleophobic, substrate technology that can be used in the manufacture of tools, transportation and packaging, welding/welding/cutting items, etc., which can solve the problems of long time and high cost

Inactive Publication Date: 2013-01-30
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unfortunately, identifying and forming the specialized substrate surface ...

Method used

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  • Superoleophobic substrates and methods of forming same
  • Superoleophobic substrates and methods of forming same
  • Superoleophobic substrates and methods of forming same

Examples

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Embodiment Construction

[0048] Various embodiments of the present invention are described in detail below, and examples of these embodiments are shown in the accompanying drawings. Whenever possible, the same or similar reference numerals are used in all the drawings to denote the same or similar parts. In the following discussion, the symbol "~" means "about". In addition, the term "micropillars" does not necessarily mean micrometers, but indicates that micropillars are very small relative to liquid droplets, and they can be nanometers, micrometers, millimeters, and combinations thereof.

[0049] Contact angle

[0050] figure 1 It is a close-up view of a cross-section of an exemplary substrate 10 having a smooth surface 12 with droplets 20 formed thereon. The liquid 20 has a liquid surface 22. The liquid 20 may be water or an organic substance such as oil. The liquid 20 forms a contact angle θ with the surface 12, which depends on the surface energy and surface roughness of the substrate. If the su...

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PUM

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Abstract

Superoleophobic substrates (110) and methods of forming same are disclosed. The methods include providing a laser-ablatable substrate (10) comprising glass and directing a laser beam (122) to the substrate surface (12) and laser-ablating at least a portion thereof to form an array of spaced-apart micropillars (232) having sidewalls (233). The laser beam is provided with sufficient energy to form on the sidewalls an irregular rough surface with re-entrant microscale and nanoscale features that render the substrate surface superoleophobic when coated with a low-surface-energy coating (246).

Description

[0001] Cross reference to related applications [0002] This application claims the priority of U.S. Provisional Application Serial No. 12 / 784955 filed on May 21, 2010 in accordance with 35U.S.C.§119(e). Technical field [0003] The present invention generally relates to non-wetting substrates, and in particular to super-oleophobic substrates and methods of forming the same. Background technique [0004] At present, great attention has been paid to the development of non-wetting substrates using surface chemistry and surface texture. Surfaces that repel water and / or organic fluids (such as oil) can be used in many applications involving, for example, microfluidics, microelectromechanical systems (MEMS), micro-separation, handheld devices, medical devices, touch screens, etc. [0005] The non-wetting properties of the substrate are generally classified according to the static contact angle of the small droplets placed on the substrate. If the liquid is water, when the contact angle o...

Claims

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Application Information

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IPC IPC(8): C03C23/00
CPCB23K26/367B23K26/0635B23K26/0869B23K26/36C03C17/30B23K26/083C03C2217/76B23K26/0648C03C17/28C03C2217/75B23K26/4075C03C23/0025B23K26/40B23K26/0624B23K26/364B23K2103/50Y10T428/24355
Inventor P·马宗达R·S·瓦格纳
Owner CORNING INC
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