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    Method of synthesizing silica nanofibers using sound waves
    6.
    发明授权
    Method of synthesizing silica nanofibers using sound waves 有权

    公开(公告)号：US10011923B2

    公开(公告)日：2018-07-03

    申请号：US15289565

    申请日：2016-10-10

    申请人： UT-Battelle, LLC

    发明人： Jaswinder K. Sharma ,  Panos G. Datskos

    IPC分类号： D01F9/10 ,  B01J19/10 ,  C01B33/12 ,  C01B33/023

    CPC分类号： D01F9/10 ,  B01J19/10 ,  B01J2219/08 ,  B01J2219/0877 ,  C01B33/023 ,  C01B33/12 ,  D10B2101/02 ,  Y10T428/298

    摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.

    PROCESSES FOR PRODUCING SILICON
    7.
    发明申请
    PROCESSES FOR PRODUCING SILICON 审中-公开

    公开(公告)号：US20170334729A1

    公开(公告)日：2017-11-23

    申请号：US15521044

    申请日：2016-10-24

    申请人： Wacker Chemie AG

    发明人： Peter GIGLER ,  Juergen STOHRER

    IPC分类号： C01B33/023

    CPC分类号： C01B33/023 ,  C01P2006/80

    摘要： Silicon is produced by magnesiothermic reduction of silicon dioxide, wherein to achieve magnesiothermic reduction a reactant mixture is employed which contains silicon dioxide (SiO2) and magnesium (Mg) and, as moderators, magnesium oxide (MgO) and silicon (Si), and optionally further moderators.

    Method of synthesizing silica nanofibers using sound waves
    8.
    发明授权
    Method of synthesizing silica nanofibers using sound waves 有权
    使用声波合成二氧化硅纳米纤维的方法

    公开(公告)号：US09132405B2

    公开(公告)日：2015-09-15

    申请号：US14178648

    申请日：2014-02-12

    申请人： UT-Battelle, LLC

    发明人： Jaswinder K. Sharma ,  Panos G. Datskos

    IPC分类号： B01J19/10 ,  C01B33/12 ,  C01B33/023

    CPC分类号： D01F9/10 ,  B01J19/10 ,  B01J2219/08 ,  B01J2219/0877 ,  C01B33/023 ,  C01B33/12 ,  D10B2101/02 ,  Y10T428/298

    摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.

    摘要翻译： 提供了使用声波合成二氧化硅纳米纤维的方法。 该方法包括提供聚乙烯吡咯烷酮溶液，加入柠檬酸钠和氢氧化铵以形成第一混合物，向溶液中加入二氧化硅基化合物以形成第二混合物，并超声处理第二混合物以合成多个二​​氧化硅纳米纤维， 平均截面直径小于70nm，长度为数百微米。 该方法可以在没有加热或静电纺丝的情况下进行，而是包括能够扩大到工业规模的较少的能量密集型策略。 所得的纳米纤维可以实现比常规纤维更小的平均直径。 由于缺陷和污染物随着直径的减小而减小，直径的减小通常会增加二氧化硅纳米纤维的拉伸强度。

    Silicon Photonic Fiber and Method of Manufacture
    10.
    发明申请
    Silicon Photonic Fiber and Method of Manufacture 有权
    硅光子纤维及其制造方法

    公开(公告)号：US20140328741A1

    公开(公告)日：2014-11-06

    申请号：US14333843

    申请日：2014-07-17

    申请人： Guifang Li ,  Fatih Yaman

    发明人： Guifang Li ,  Fatih Yaman

    IPC分类号： C01B33/023 ,  G02B6/10

    CPC分类号： C01B33/023 ,  G02B6/02328 ,  G02B6/02361 ,  G02B6/102 ,  G02B2006/12061 ,  G02B2006/12169

    摘要： Methods of converting silica to silicon and fabricating silicon photonic crystal fiber (PCF) are disclosed. Silicon photonic crystal fibers made by the fabrication methods are also disclosed. One fabrication method includes: sealing silica PCF and a quantity of magnesium within a container, the quantity of magnesium defined by 2Mg(g)+SiO2(s)->2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid. Another fabrication method includes: adding silica PCF and a quantity of solid magnesium to an unsealed container, the quantity of magnesium substantially in excess of that defined by 2Mg(g)+SiO2(s)->2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid.

    摘要翻译： 公开了将二氧化硅转化为硅并制造硅光子晶体光纤（PCF）的方法。 还公开了通过制造方法制造的硅光子晶体光纤。 一种制造方法包括：将二氧化硅PCF和一定量的镁密封在容器内，由2Mg（g）+ SiO 2（s）〜> 2MgO（s）+ Si（s）限定的镁的量; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。 另一种制造方法包括：将二氧化硅PCF和一定量的固体镁添加到未密封的容器中，镁的量基本上超过由2Mg（g）+ SiO 2（s）>> 2MgO（s）+ Si ; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。