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    Siloxane Compositions Including Titanium Dioxide Nanoparticles Suitable For Forming Encapsulants
    1.
    发明申请
    Siloxane Compositions Including Titanium Dioxide Nanoparticles Suitable For Forming Encapsulants 审中-公开
    包含二氧化钛纳米颗粒的硅氧烷组合物适用于形成密封剂

    公开(公告)号：US20140008697A1

    公开(公告)日：2014-01-09

    申请号：US13991835

    申请日：2011-12-06

    申请人： Brian R. Harkness ,  Ann W. Norris ,  Shellene K. Thurston ,  Vishal Chhabra ,  Bharati S. Kulkarni ,  Nikhil R. Taskar

    发明人： Brian R. Harkness ,  Ann W. Norris ,  Shellene K. Thurston ,  Vishal Chhabra ,  Bharati S. Kulkarni ,  Nikhil R. Taskar

    IPC分类号： H01L33/56

    CPC分类号： H01L33/56 ,  C08G77/045 ,  C08G77/12 ,  C08G77/20 ,  C08L83/04 ,  H01L23/296 ,  H01L2924/0002 ,  H01L2924/00

    摘要： A composition includes an organopolysiloxane component (A) comprising at least one of a disiloxane, a trisiloxane, and a tetrasiloxane, and has an average of at least two alkenyl groups per molecule. The composition further includes an organohydrogensiloxane component (B) having an average of at least two silicon-bonded hydrogen atoms per molecule. Components (A) and (B) each independently have at least one of an alkyl group and an aryl group and each independently have a number average molecular weight less than or equal to 1500 (g/mole). The composition yet further includes a catalytic amount of a hydrosilylation catalyst component (C), and titanium dioxide (TiO2) nanoparticles (D). The composition has a molar ratio of alkyl groups to aryl groups ranging from 1:0.25 to 1:3.0. A product of the present invention is the reaction product of the composition, which may be used to make a light emitting diode.

    摘要翻译： 组合物包括包含二硅氧烷，三硅氧烷和四硅氧烷中的至少一种的有机聚硅氧烷组分（A），并且每分子平均具有至少两个烯基。 组合物还包括每分子平均具有至少两个硅键合的氢原子的有机氢硅氧烷组分（B）。 组分（A）和（B）各自独立地具有烷基和芳基中的至少一个，并且各自独立地具有小于或等于1500（g / mol）的数均分子量。 该组合物还包括催化量的氢化硅烷化催化剂组分（C）和二氧化钛（TiO 2）纳米颗粒（D）。 该组合物的烷基与芳基的摩尔比范围为1:0.25至1:3.0。 本发明的产品是可用于制造发光二极管的组合物的反应产物。

    High resolution high output microchannel based radiation sensor
    2.
    发明授权
    High resolution high output microchannel based radiation sensor 失效
    高分辨率高输出微通道辐射传感器

    公开(公告)号：US06534772B1

    公开(公告)日：2003-03-18

    申请号：US09688662

    申请日：2000-10-16

    申请人： Vishal Chhabra ,  Rameshwar Nath Bhargava ,  Dennis Gallagher ,  Samuel P. Herko ,  Bharati S. Kulkarni ,  Nikhil R. Taskar ,  Aleksey Yekimov

    发明人： Vishal Chhabra ,  Rameshwar Nath Bhargava ,  Dennis Gallagher ,  Samuel P. Herko ,  Bharati S. Kulkarni ,  Nikhil R. Taskar ,  Aleksey Yekimov

    IPC分类号： G01T120

    CPC分类号： G21K4/00 ,  G01T1/20 ,  G01T1/2921 ,  G21K2004/06 ,  G21K2004/12 ,  H01J2231/50036 ,  H01J2231/5016 ,  Y10S977/89

    摘要： A microchannel phosphor screen for converting radiation, such as X-rays, into visible light. The screen includes a planar surface, which can be formed from glass, silicon or metal, which has etched therein a multiplicity of closely spaced microchannels having diameters of the order of 40 microns or less. Deposited within each of the microchannels is a multiplicity of phosphors which emit light when acted upon by radiation. The dimensions of the microchannel and the phosphors and the relationship between the microchannels and the phosphors is optimized so that the light output compares favorably with lower resolution non microchannel based scintillation screens. A photomultiplier can be integrated with the X-ray detector so as to provide an enhanced output for use with low level X-ray of for cine or fluoroscopy applications.

    摘要翻译： 用于将诸如X射线的辐射转换成可见光的微通道荧光屏。 屏幕包括可以由玻璃，硅或金属形成的平坦表面，其在其中蚀刻了许多直径为40微米或更小的直径的紧密间隔的微通道。 沉积在每个微通道内的是在辐射作用时发光的多种荧光体。 微通道和磷光体的尺寸以及微通道和荧光体之间的关系被优化，使得光输出与较低分辨率的非微通道闪烁屏相比较。 光电倍增管可与X射线检测器集成，以提供增强的输出，用于电影或荧光透视应用的低电平X射线。

    Microemulsion method for producing activated metal oxide nanocrystals
    3.
    发明授权
    Microemulsion method for producing activated metal oxide nanocrystals 失效
    用于生产活性金属氧化物纳米晶体的微乳液法

    公开(公告)号：US6036886A

    公开(公告)日：2000-03-14

    申请号：US124472

    申请日：1998-07-29

    申请人： Vishal Chhabra ,  Bharati S. Kulkarni ,  Rameshwar Nath Bhargava

    发明人： Vishal Chhabra ,  Bharati S. Kulkarni ,  Rameshwar Nath Bhargava

    IPC分类号： C01B13/32 ,  C09K11/77 ,  C01G1/02

    CPC分类号： B82Y30/00 ,  C01B13/328 ,  C09K11/7701 ,  C09K11/7769 ,  C01P2004/64

    摘要： A process for the production of metal oxide nanocrystals activated with a rare earth element, which are useful as phosphors. The nanocrystal oxides are produced by a micellar microemulsion process. In the process an aqueous solutions of the host and activator is prepared and added to a mixture of oil and a micelle forming surfactant and cosurfactant to form a first water in oil microemulsion. An aqueous solution of a hydroxide containing compound is added to a second mixture of oil and a micelle forming surfactant and cosurfactant to form a second water in oil microemulsion. The two microemulsions are added together which cause the micelle units to coalesce and decoalesce and to form a nanocrystalline hydroxide compound of the host and activator. The solution is washed and treated so as to remove byproducts. Thereafter the hydroxide compound is converted to an nanocrystalline activated oxide.

    摘要翻译： 用于生产用稀土元素活化的金属氧化物纳米晶体的方法，其可用作磷光体。 纳米晶体氧化物通过胶束微乳液法生产。 在该方法中，制备主体和活化剂的水溶液并将其加入到油和形成胶束的表面活性剂和辅助表面活性剂的混合物中以形成第一水中的油微乳液。 将含氢氧化物的化合物的水溶液加入到油和形成胶束的表面活性剂和辅助表面活性剂的第二混合物中以形成第二水中的油微乳液。 将两种微乳液加入到一起，这使得胶束单元聚结并解质并形成主体和活化剂的纳米晶体氢氧化物化合物。 将溶液洗涤并处理以除去副产物。 此后，将氢氧化物转化为纳米晶体活化氧化物。