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72 条记录 (耗时 0.035 秒)

    Electrohydrodynamically patterned colloidal crystals
    52.
    发明授权
    Electrohydrodynamically patterned colloidal crystals 失效
    电流动力学图案胶体晶体

    公开(公告)号：US06533903B2

    公开(公告)日：2003-03-18

    申请号：US09843509

    申请日：2001-04-26

    申请人： Ryan C. Hayward ,  Hak F. Poon ,  Yi Xiao ,  Dudley A. Saville ,  Ilhan A. Aksay

    发明人： Ryan C. Hayward ,  Hak F. Poon ,  Yi Xiao ,  Dudley A. Saville ,  Ilhan A. Aksay

    IPC分类号： C07C600

    CPC分类号： C30B29/60 ,  C30B5/00 ,  C30B30/00

    摘要： A method for assembling patterned crystalline arrays of colloidal particles using ultraviolet illumination of an optically-sensitive semiconducting anode while using the anode to apply an electronic field to the colloidal particles. The ultraviolet illumination increases current density, and consequently, the flow of the colloidal particles. As a result, colloidal particles can be caused to migrate from non-illuminated areas of the anode to illuminated areas of the anode. Selective illumination of the anode can also be used to permanently affix colloidal crystals to illuminated areas of the anode while not affixing them to non-illuminated areas of the anode.

    摘要翻译： 一种利用光敏半导体阳极的紫外线照射来组装胶体颗粒的图案化晶体阵列的方法，同时使用阳极将电场施加到胶体颗粒。 紫外线照射增加了电流密度，从而增加了胶体颗粒的流动。 结果，可以使胶体颗粒从阳极的非照射区域迁移到阳极的照明区域。 阳极的选择性照明也可以用于将胶体晶体永久地粘贴到阳极的照明区域，而不将其粘附到阳极的非照明区域。

    Biomimetic pathways for assembling inorganic thin films and oriented mesoscopic silicate patterns through guided growth
    53.
    发明授权
    Biomimetic pathways for assembling inorganic thin films and oriented mesoscopic silicate patterns through guided growth 失效

    公开(公告)号：US06228248B1

    公开(公告)日：2001-05-08

    申请号：US09291549

    申请日：1999-04-14

    申请人： Ilhan A. Aksay ,  Mathias Trau ,  Srinivas Manne ,  Itaru Honma ,  George Whitesides

    发明人： Ilhan A. Aksay ,  Mathias Trau ,  Srinivas Manne ,  Itaru Honma ,  George Whitesides

    IPC分类号： C25D100

    CPC分类号： C01B33/12 ,  Y10T428/31598

    摘要： A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern. The electric field is sufficient to cause electro-osmotic fluid motion and enhanced rates of fossilization by localized Joule heating.

    Multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure
    56.
    发明授权
    Multipurpose boron carbide-aluminum composite and its manufacture via the control of the microstructure 失效
    多功能碳化硼 - 铝复合材料及其制造通过控制微观结构

    公开(公告)号：US4702770A

    公开(公告)日：1987-10-27

    申请号：US759411

    申请日：1985-07-26

    申请人： Aleksander J. Pyzik ,  Ilhan A. Aksay

    发明人： Aleksander J. Pyzik ,  Ilhan A. Aksay

    IPC分类号： C04B41/51 ,  C04B41/88 ,  C22C1/10 ,  C22C29/02 ,  C22C29/06 ,  B22F3/12 ,  B22F3/26

    CPC分类号： C04B41/009 ,  C04B41/51 ,  C04B41/88 ,  C22C29/02 ,  C22C29/062 ,  Y10T428/12035 ,  Y10T428/2933

    摘要： Low-density composites are produced consisting chiefly of boron carbide and aluminum, or aluminum alloy, and minor amounts of ceramic material. The method allows control of the rate of reaction between boron carbide and metal so that the final components of the composite, and hence the mechanical properties, are controlled. The invention includes modification of the carbon content of the boron carbide composition, dispersion of boron carbide and formation of a compact, infiltration of the compact by aluminum or aluminum alloy, and heat treatments. The invention produces low-density boron carbide-aluminum composites with a homogeneous microstructure possessing desired mechanical properties.

    摘要翻译： 生产的低密度复合材料主要由碳化硼和铝或铝合金和少量的陶瓷材料组成。 该方法允许控制碳化硼和金属之间的反应速率，从而控制复合材料的最终组分，并因此控制其机械性能。 本发明包括碳化硼组合物的碳含量的修饰，碳化硼的分散体以及由铝或铝合金形成紧凑的压实体，以及热处理。 本发明生产具有所需机械性能的均匀微结构的低密度碳化硼 - 铝复合材料。

    Biomimetic pathways for assembling inorganic thin films and oriented mesoscopic silicate patterns through guided growth
    60.
    发明授权
    Biomimetic pathways for assembling inorganic thin films and oriented mesoscopic silicate patterns through guided growth 失效
    通过引导生长组装无机薄膜和定向介观硅酸盐图案的生物模拟途径

    公开(公告)号：US07179356B2

    公开(公告)日：2007-02-20

    申请号：US10411641

    申请日：2003-04-11

    申请人： Ilhan A. Aksay ,  Mathias Trau ,  Srinivas Manne ,  Itaru Honma ,  George Whitesides

    发明人： Ilhan A. Aksay ,  Mathias Trau ,  Srinivas Manne ,  Itaru Honma ,  George Whitesides

    IPC分类号： B01D57/02

    CPC分类号： C01B33/12 ,  Y10T428/31598

    摘要： A process directed to preparing surfactant-polycrystalline inorganic nanostructured materials having designed microscopic patterns. The process includes forming a polycrystalline inorganic substrate having a flat surface and placing in contact with the flat surface of the substrate a surface having a predetermined microscopic pattern. An acidified aqueous reacting solution is then placed in contact with an edge of the surface having the predetermined microscopic pattern. The solution wicks into the microscopic pattern by capillary action. The reacting solution has an effective amount of a silica source and an effective amount of a surfactant to produce a mesoscopic silica film upon contact of the reacting solution with the flat surface of the polycrystalline inorganic substrate and absorption of the surfactant into the surface. Subsequently an electric field is applied tangentially directed to the surface within the microscopic pattern. The electric field is sufficient to cause electro-osmotic fluid motion and enhanced rates of fossilization by localized Joule heating.

    摘要翻译： 一种制备具有设计微观图案的表面活性剂 - 多晶无机纳米结构材料的方法。 该方法包括形成具有平坦表面的多晶无机基材，并且与基材的平坦表面接触具有预定微观图案的表面。 然后将酸化的水性反应溶液与具有预定微观图案的表面的边缘接触。 溶液通过毛细管作用吸入微观图案。 当反应溶液与多晶无机基材的平坦表面接触并吸收表面活性剂时，反应溶液具有有效量的二氧化硅源和有效量的表面活性剂以产生介观二氧化硅膜。 随后在微观图案中切向地指向表面的电场。 电场足以引起电渗流体运动，并通过局部焦耳加热提高僵化率。