F - Mech Eng,Light,Heat,Weapons – 15 – D
Patent
F - Mech Eng,Light,Heat,Weapons
15
D
F15D 1/00 (2006.01) H01M 8/04 (2006.01)
Patent
CA 2687584
Embodiments of the invention include or comprise super wetting structured surfaces having one or more asperities, sometimes referred to as hemi-wicking. Structured substrates with regular arrays of asperities such as square pillars or frustra were machined from graphite blocks and then treated to render them lyophilic. Liquids spread over these surfaces to produce non- circular wetting areas. As the channels formed between the asperities were made shallower or narrower, liquids wicked more and spread over a larger area. The inherent wettability of the substrate was independent or nearly independent of the substrate. A combination of the appropriate surface structure and moderate inherent wettability can effectively flatten liquids, spreading them over very large areas.
Des modes de réalisation de l'invention concernent des surfaces structurées supra-mouillables présentant au moins une aspérité, parfois appelée hémi-capillarité. Des substrats structurés comportant des réseaux réguliers d'aspérités telles que des piliers carrés ou des troncs coniques ont été usinés à partir de blocs de graphite puis traités pour devenir lyophiles. Des liquides se dispersent sur ces surfaces pour produire des surfaces de mouillage non circulaires. Comme les canaux formés entre les aspérités sont peu profonds ou étroits, les liquides pénètrent davantage par capillarité et se dispersent sur une zone plus vaste. La mouillabilité inhérente du substrat est indépendante ou quasiment indépendante de ce dernier. La combinaison d'une surface de structure appropriée et d'une mouillabilité inhérente modérée permet d'aplanir efficacement des liquides en les dispersant sur des zones très vastes.
Extrand Charles W.
Moon Sung In
Entegris Inc.
Kirby Eades Gale Baker
LandOfFree
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