Ultraphobic surface

US7285331B1 · kind B1 · utility

Assignee

• QIAGEN GmbH · DE

Inventors

• Karsten Reihs · Cologne, DE
• Daniel Gordon Duff · Leverkusen, DE
• Georg Wiessmeier · Bensberg, DE
• Matthias Voetz
• Johan Kijlstra · Leverkusen, DE
• Dieter Rühle · Odenthal, DE
• Burkhard Kohler · Leverkusen, DE

Key dates

• Filing date: Dec 22, 1999
• Grant date: Oct 23, 2007
• Expiry date: Dec 22, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a structured surface with ultraphobic properties. Said surface as a surface topography in which the value of the integral of a function S: S(log f)=a(f)·f, which gives a relationship between the spatial frequencies f of the individual Fourier components and their amplitudes a(f) is at least 0.5 between the integration limits log (f1/μm−1)=−3 and log (f2/μm−1)=3. The surface consists of a hydrophobic or oleophobic material or is coated with a hydrophobic or oleophobic material.