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272 条记录 (耗时 0.03 秒)

    Two-phase thermal method for preparation of cadmium sulfide quantum dots
    92.
    发明申请
    Two-phase thermal method for preparation of cadmium sulfide quantum dots 有权
    用于制备硫化镉量子点的两相热法

    公开(公告)号：US20070004183A1

    公开(公告)日：2007-01-04

    申请号：US11158111

    申请日：2005-06-21

    申请人： Qiang Wang ,  Daocheng Pan ,  Xiangling Ji ,  Shichun Jiang ,  Lijia An

    发明人： Qiang Wang ,  Daocheng Pan ,  Xiangling Ji ,  Shichun Jiang ,  Lijia An

    IPC分类号： H01L21/20

    CPC分类号： H01L21/02628 ,  B82Y10/00 ,  C23C18/1204 ,  C23C18/1283 ,  H01L21/02557 ,  H01L21/0259

    摘要： The present invention relates to a two-phase thermal method for the preparation of cadmium sulfide quantum dots. In the method, cadmium carboxylate containing 2 to 18 carbon atoms or cadmium oxide is selected as cadmium source; thiourea or thioacetamide is selected as sulfur source; oleic acid or trioctylphosphine oxide (TOPO) is selected as capping agent, and molar ratio of cadmium source to sulfur source is in a range of from 10:1 to 1:10, and molar ratio of cadmium source to capping agent is in a range of from 1:7 to 1:25. Water and water-insoluble organic compound in equal or similar volume are used as solvents forming a two-phase system. The mixture is heated at 120-180° C. in an autoclave for 0.5 to 24 hrs. By means of varying reaction time, cadmium sulfide quantum dots of different sizes could be prepared. Alternatively, it is also feasible to use quantum dots already obtained as crystal seeds in the reaction of newly added reaction precursor to give larger sized quantum dots with a size distribution similar to that of the initial crystal seeds so as to realize the control of quantum dot size. The quantum dots obtained in the present invention have relatively narrow size distribution, emit royal purple or blue light under ultraviolet lamp, with a photoluminescence quantum efficiency of from 3 to 60%.

    摘要翻译： 本发明涉及制备硫化镉量子点的两相热法。 在该方法中，选择含有2〜18个碳原子的镉或氧化镉作为镉源; 选择硫脲或硫代乙酰胺作为硫源; 选择油酸或三辛基氧化膦（TOPO）作为封端剂，镉源与硫源的摩尔比在10:1至1:10的范围内，镉源与封端剂的摩尔比在一定范围内 为1:7至1:25。 使用相同或相似体积的水和水不溶性有机化合物作为形成两相体系的溶剂。 将混合物在高压釜中在120-180℃下加热0.5至24小时。 通过改变反应时间，可以制备不同尺寸的硫化镉量子点。 或者，在新添加的反应前体的反应中，使用已经作为晶体种子获得的量子点，得到尺寸分布与初始晶种类似的大尺寸量子点也是可行的，以实现量子点的控制 尺寸。 在本发明中获得的量子点具有相对较窄的尺寸分布，在紫外灯下发射紫外或蓝光，光致发光量子效率为3至60％。

    Fast signature scan
    95.
    再颁专利
    Fast signature scan 有权

    公开(公告)号：USRE49090E1

    公开(公告)日：2022-05-31

    申请号：US16910053

    申请日：2020-06-23

    申请人： Qiang Wang

    发明人： Qiang Wang

    IPC分类号： G06V40/12 ,  G06F16/28 ,  G06F16/903 ,  G06F21/56 ,  G06K9/62 ,  H04L9/40

    摘要： Systems and methods for scanning signatures in a string field. In one implementation, the invention provides a method for signature scanning. The method includes receiving a particular string field, scanning the particular string field for a plurality of signatures using a larger scan step size, scanning the particular string field for the remaining signatures that are shorter than what can be scanned by the larger scan step size separately either using the same scanning method but a smaller scan step size or using a different scan method and the same or a smaller scan step size, and outputting any identified signatures in the particular string field.

    UNIFIED INTERNET INTEGRATION SYSTEM FOR A POSITIONING-ORIENTED ARCHITECTURE AND THE METHOD THEREOF
    98.
    发明申请
    UNIFIED INTERNET INTEGRATION SYSTEM FOR A POSITIONING-ORIENTED ARCHITECTURE AND THE METHOD THEREOF 有权

    公开(公告)号：US20210012911A1

    公开(公告)日：2021-01-14

    申请号：US17037337

    申请日：2020-09-29

    申请人： Qiang Wang ,  Jin Wang ,  Yong Wang

    发明人： Qiang Wang ,  Jin Wang ,  Yong Wang

    IPC分类号： G16Y40/60 ,  G16Y40/30

    摘要： A unified Internet integration system for a positioning-oriented architecture (POA) comprises a controllable icon positioning information management service (CIPIMS) server; an icon positioning object information bus; at least one icon positioning resource object; at least one network application; at least one network; wherein the POA further comprises at least one unique icon positioning identification number, at least one icon positioning resource, at least one icon positioning resource space management, at least one icon positioning resource management, at least one icon positioning external resource links with Internet protocol address, and at least one icon positioning resource status management; and the method thereof.

    Fast signature scan
    99.
    发明授权
    Fast signature scan 有权

    公开(公告)号：US10860832B2

    公开(公告)日：2020-12-08

    申请号：US16910071

    申请日：2020-06-24

    申请人： Qiang Wang

    发明人： Qiang Wang

    IPC分类号： G06F15/16 ,  G06K9/00 ,  H04L29/06 ,  G06F16/903 ,  G06F21/56 ,  G06K9/62 ,  G06F16/28

    摘要： Systems and methods for scanning signatures in a string field. In one implementation, the invention provides a method for signature scanning. The method includes receiving a particular string field, scanning the particular string field for a plurality of signatures using a larger scan step size, scanning the particular string field for the remaining signatures that are shorter than what can be scanned by the larger scan step size separately either using the same scanning method but a smaller scan step size or using a different scan method and the same or a smaller scan step size, and outputting any identified signatures in the particular string field.