Porous layer, its manufacturing process and its applications

The porous sol-gel silica layer (2) comprises a series of closed pores (10-90%) with smallest characteristic dimension of >= 20 nm. The porous layer is obtained with a solid blowing agent in a particulate form and is coated with a fluorinated organosilane or perfluoroalkylsilane. The pores have s...

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Hauptverfasser: BESSON SOPHIE, HUIGNARD ARNAUD, ROHAUT NATHALIE
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The porous sol-gel silica layer (2) comprises a series of closed pores (10-90%) with smallest characteristic dimension of >= 20 nm. The porous layer is obtained with a solid blowing agent in a particulate form and is coated with a fluorinated organosilane or perfluoroalkylsilane. The pores have spherical or oval shape. The porous layer with pores of different sizes and proportions includes stack of porous layers with increased thickness. The porous layer has a refractive index of = 1.1 at 600 nm. The porous sol-gel silica layer (2) comprises a series of closed pores (10-90%) with smallest characteristic dimension of >= 20 nm. The porous layer is obtained with a solid blowing agent in a particulate form and is coated with a fluorinated organosilane or perfluoroalkylsilane. The pores have spherical or oval shape. The porous layer with pores of different sizes and proportions includes stack of porous layers with increased thickness. The porous layer has a refractive index of = 1.1 at 600 nm and is disposed on a