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    • 33. 发明授权
    • Three-dimensionally patterned materials and methods for manufacturing
same using nanocrystals
    • 使用纳米晶体的三维图案化材料及其制造方法
    • US6139626A
    • 2000-10-31
    • US148521
    • 1998-09-04
    • David J. NorrisYurii A. Vlasov
    • David J. NorrisYurii A. Vlasov
    • B82B3/00C30B5/00G02B6/122H01L21/368C30B7/02
    • G02B6/1225B82Y20/00C30B29/605C30B5/00Y10T428/25
    • A method for patterning materials according to a predetermined, three-dimensional pattern, as well as patterned materials produced by said methods, are provided. A template is prepared comprising a template material, the template having a plurality of pores therein, the plurality of pores comprising a negative of the predetermined, three-dimensional pattern. Colloidal nanocrystals sufficient to fill the pores in the template are also prepared. The pores in the template are filled with the colloidal nanocrystals. A quantum-dot solid is formed from the colloidal nanocrystals within the pores in the template, such that the colloidal nanocrystals are concentrated as close-packed nanocrystals within the pores in the template in the predetermined, three-dimensional pattern. If desired, a conventional solid may be obtained by sintering the close-packed nanocrystals within the pores of the template.
    • 提供了根据预定的三维图案来图案化材料的方法,以及通过所述方法制造的图案化材料。 制备包含模板材料的模板,所述模板在其中具有多个孔,所述多个孔包含预定的三维图案的负值。 还制备了足以填充模板中的孔的胶体纳米晶体。 模板中的孔被胶体纳米晶体填充。 量子点固体由模板中的孔内的胶体纳米晶体形成,使得胶体纳米晶体以预定的三维图案在模板的孔内作为紧密堆积的纳米晶体浓缩。 如果需要,可以通过在模板的孔内烧结紧密堆积的纳米晶体来获得常规的固体。
    • 34. 发明授权
    • Crystalline colloidal arrays in solid form
    • 固体形式的结晶胶体阵列
    • US6123845A
    • 2000-09-26
    • US153521
    • 1998-09-15
    • Sanford A. AsherJay Henis
    • Sanford A. AsherJay Henis
    • C30B5/00G02B5/20G02B6/12G02B6/122G02B6/13B01D69/00B01J13/00
    • C30B5/00B82Y20/00C30B29/60G02B5/203G02B5/206G02B6/1225G02B6/13G02B2006/12109G02B2006/12176Y10S977/773Y10T428/2982
    • A method of making a solid filter material which filters a predetermined wavelength band from a broader spectrum of radiation is provided. The method includes creating a colloidal structure composed of particles dispersed within a medium, and introducing a solvent thereto. Thereafter, the solvent is evaporated and the remaining structure solidifies into a solid crystalline array. The particles can also be fused together by polymerization using one of several methods which are provided. In another embodiment, methods of filtering submicron particles have been developed which consists of establishing a gel membrane from a crystalline colloidal array with an interstice size less than or equal to the particles to be filtered are disclosed. The gel membrane may employ anisotropic interstices of submicron size and is stretchable or compressible mechanically. The method also includes stacking a plurality of gel membrane filters so that the material to be filtered sequentially flows through the interstices of the filters leaving different size submicron particles on different levels of said filters. Another embodiment of the invention has a plurality of particles having a positive or negative charge in a lattice and has oppositely charged mobile particles movable into and out of the interstices of the gel membrane. An electric field is employed to move the mobile particles to close or open the interstices of the lattice. The mobile particles can also pump material through the interstices. Decorative uses of the materials are also disclosed.
    • 提供了制造从宽范围的辐射过滤预定波段的固体过滤材料的方法。 该方法包括产生由分散在介质中的颗粒构成的胶体结构,并向其中引入溶剂。 此后,蒸发溶剂,剩下的结构固化成固体晶体阵列。 通过使用提供的几种方法之一通过聚合也可将颗粒熔合在一起。 在另一个实施方案中,已经开发了过滤亚微米颗粒的方法,其包括由晶体尺寸小于或等于待过滤颗粒的晶体胶体阵列建立凝胶膜。 凝胶膜可以使用亚微米尺寸的各向异性空隙,并且是机械可拉伸的或可压缩的。 该方法还包括堆叠多个凝胶膜过滤器,使得待过滤的材料依次流过过滤器的间隙,在不同级别的所述过滤器上留下不同尺寸的亚微米颗粒。 本发明的另一个实施方案具有多个在晶格中具有正电荷或负电荷的颗粒,并且具有可移入和移出凝胶膜间隙的相反电荷的可移动颗粒。 使用电场来移动移动颗粒以关闭或打开格子的间隙。 移动颗粒还可以通过间隙泵送材料。 还公开了材料的装饰用途。
    • 37. 发明授权
    • Procedure to prepare transparent silica gels
    • 制备透明硅胶的步骤
    • US4696808A
    • 1987-09-29
    • US933961
    • 1986-11-24
    • Patrick G. BarberNorman R. Simpson
    • Patrick G. BarberNorman R. Simpson
    • C01B33/154C30B5/00C01B33/12
    • C30B5/00C01B33/154C30B29/12C30B29/46
    • A process for the preparation of transparent silica gels which can be used as crystal growth media is disclosed. A quantity of cation exchange resin beads is placed in a solution of a soluble potassium salt and stirred for several hours to allow the potassium ions to replace the cations on the resin beads. The supernatant liquid is then decanted through a filter, and the treated resin beads are rinsed with distilled water to remove excess salts. The treated resin beads are then transferred into a sodium silicate solution. The resulting mixture is stirred to allow the potassium ions on the treated resin beads to exchange with the sodium ions in the sodium silicate solution. The treated silicate solution is then poured through a coarse filter. A volume of boiled, cooled distilled water is added to a volume of the treated silicate solution, after which a volume of acetic acid solution is added to the mixture of distilled water and treated silicate solution. This mixture is then allowed to gel at room temperature, whereby a transparent silica gel is produced. The transparent silica gel is used as a crystal growth medium to simulate the convectionless environment of space and produce structurally perfect crystals.
    • 公开了可用作晶体生长介质的透明硅胶的制备方法。 将一定数量的阳离子交换树脂珠置于可溶性钾盐溶液中并搅拌数小时以使钾离子替代树脂珠上的阳离子。 然后将上清液通过过滤器倾析,用蒸馏水冲洗经处理的树脂珠以除去过量的盐。 然后将经处理的树脂珠转移到硅酸钠溶液中。 搅拌所得混合物,使处理后的树脂珠上的钾离子与硅酸钠溶液中的钠离子交换。 然后将经处理的硅酸盐溶液通过粗过滤器倒入。 将一定量的煮沸的冷却的蒸馏水加入一定体积的经处理的硅酸盐溶液中,然后将一定体积的乙酸溶液加入到蒸馏水和经处理的硅酸盐溶液的混合物中。 然后将该混合物在室温下凝胶化,由此制备透明硅胶。 透明硅胶用作晶体生长介质,以模拟空间的无对流环境,并产生结构完美的晶体。