Superhydrophobic
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Superhydrophobic silicon fabricated by phosphomolybdic acid-assisted electrochemical etching
Controllable geometry silicon surfaces with superhydrophobicity are difficult to be fabricated without photolithography techniques. Superhydrophobic silicon surfaces with water contact angle larger than 150º and sliding angle less than 10º have been successfully fabricated by electrochemical etching strategy. Squarelike hole arrays with controllable geomet
Quím. Nova. Publicado em: 26/08/2019
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2. CORK MEMBRANE FOR EFFICIENT OIL AND WATER SEPARATION
Cork is a renewable, biocompatible, environmentally friendly and abundant biological material with microscale cellular structure. Fabrication of filtration membranes for the separation of oil and water by utilizing such natural materials to replace nonnatural membranes is a green method. A cork membrane with a water contact angle greater than 150° and an oi
Quím. Nova. Publicado em: 2018-07
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3. Superhydrophobic Copper Foam Supported Phase Change Composites with High Thermal Conductivity for Energy Storage
Superhydrophobic and superoleophilic oxidized copper foam (OCF) was prepared by oxidation of copper foam using (NH4)2S2O8 to generate rough surface then followed by modification with low surface energy substance polydimethylsiloxane (PDMS) and stearic acid (SA). Based on sperwetting, form-stable phase change materials (PCMs) composites were obtained by facil
Mat. Res.. Publicado em: 22/03/2018
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4. A Nano-modified superhydrophobic membrane
This paper focuses on the synthesis of super-hydrophobic membranes. The polymer used in this research is polystyrene (PS), which has low surface energy but not low enough to be characterized as a superhydrophobic material. As hydrophobicity is based on low energy surface and surface roughness, the electrospinning technique was selected as the manufacturing t
Mat. Res.. Publicado em: 25/02/2013
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5. Superfícies super-hidrofóbicas obtidas através de microestruturas litografadas. / Superhydrophobic surfaces obtained by microstructures lithographed.
Aqui apresentamos um modelo teórico para superfícies super-hidrofóbicas que são formadas por superfícies contendo padrões periódicos na forma de microcavidades. Com este modelo obtivemos a relação ideal entre profundidade e diâmetro das cavidades para que a superfície manifeste seu caráter super-hidrofóbico. Assim, fabricamos superfícies em PDM
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/10/2011
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6. Microestruturação de superfícies poliméricas a laser: fabricação de superfícies superhidrofóbicas / Laser microstructuring of polymeric surfaces: obtaining superhydrophobic surfaces.
Neste trabalho, exploramos o uso de técnicas de microestruturação de materiais poliméricos a laser, visando a obtenção de superfícies superhidrofóbicas. Primeiramente, empregamos o fenômeno de transporte de massa em larga escala, obtido quando polímeros azoaromáticos são expostos a um padrão de interferência, para microestruturar a superfície
Publicado em: 2010