Supported catalyst
    11.
    发明授权
    Supported catalyst 有权
    负载催化剂

    公开(公告)号:US09548501B2

    公开(公告)日:2017-01-17

    申请号:US13498665

    申请日:2009-12-17

    摘要: A supported catalyst is prepared by a process that includes establishing shell-removal conditions for a supported catalyst intermediate that includes capped nanoparticles of a catalyst material dispersed on a carbon support. The capped nanoparticles each include a platinum alloy core capped in an organic shell. The shell-removal conditions include an elevated temperature and an inert gas atmosphere that is substantially free of oxygen. The organic shell is removed from the platinum alloy core under the shell-removal conditions to limit thermal decomposition of the carbon support and thereby limit agglomeration of the catalyst material such that the supported catalyst includes an electrochemical surface area of at least 30 m2/gPt.

    摘要翻译: 载体催化剂通过包括建立负载催化剂中间体的壳去除条件的方法制备,所述载体催化剂中间体包括分散在碳载体上的催化剂材料的封端纳米颗粒。 封盖的纳米颗粒各自包括封装在有机壳中的铂合金芯。 脱壳条件包括升高的温度和基本上不含氧的惰性气体气氛。 在除壳条件下从铂合金芯中除去有机壳以限制碳载体的热分解,从而限制催化剂材料的附聚,使得负载催化剂包括至少30m 2 / gPt的电化学表面积。

    Flexible multi-moduled nanoparticle-structured sensor array on polymer substrate and methods for manufacture
    12.
    发明授权
    Flexible multi-moduled nanoparticle-structured sensor array on polymer substrate and methods for manufacture 有权
    聚合物基体上的多模多元纳米颗粒结构传感器阵列和制造方法

    公开(公告)号:US09080942B2

    公开(公告)日:2015-07-14

    申请号:US13325978

    申请日:2011-12-14

    摘要: A flexible chemiresistor (CR) sensor for sensing a molecule of interest in a fluid (liquid or gas) is provided. The flexible CR sensor comprises a flexible chemiresistor (CR) module. The flexible CR module comprises a flexible substrate such polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polyimide (PI), and a thin film nanoparticle assembly assembled on the flexible substrate. The thin film nanoparticle assembly comprises metal or metal alloy core, ligand-capped nanoparticles and molecular linkers connecting the nanoparticles. The flexible CR sensor and an intelligent pattern recognition engine can be incorporated in a handheld device that can detect a molecule of interest in a fluid (e.g., a liquid or gas) accurately, rapidly, and without false positives. Any sensing array nanomaterial, pattern recognition, and compact/or electronic hardware can be integrated to achieve a desired detection limit and response speed.

    摘要翻译: 提供了用于感测流体(液体或气体)中感兴趣的分子的柔性化学电阻(CR)传感器。 灵活的CR传感器包括灵活的化学电阻(CR)模块。 柔性CR模块包括柔性基底如聚对苯二甲酸乙二醇酯(PET),聚萘二甲酸乙二醇酯(PEN)或聚酰亚胺(PI))和组装在柔性基底上的薄膜纳米颗粒组件。 薄膜纳米颗粒组件包括金属或金属合金芯,配体封端的纳米颗粒和连接纳米颗粒的分子连接体。 灵活的CR传感器和智能模式识别引擎可以并入到能够精确,快速,无假阳性的情况下在流体(例如,液体或气体)中检测感兴趣的分子的手持设备中。 可以集成任何感测阵列纳米材料,图案识别和紧凑型或电子硬件,以实现期望的检测极限和响应速度。

    FLEXIBLE MULTI-MODULED NANOPARTICLE-STRUCTURED SENSOR ARRAY ON POLYMER SUBSTRATE AND METHODS FOR MANUFACTURE
    13.
    发明申请
    FLEXIBLE MULTI-MODULED NANOPARTICLE-STRUCTURED SENSOR ARRAY ON POLYMER SUBSTRATE AND METHODS FOR MANUFACTURE 有权
    聚合物基板上柔性多模式纳米结构传感器阵列及其制造方法

    公开(公告)号:US20120156099A1

    公开(公告)日:2012-06-21

    申请号:US13325978

    申请日:2011-12-14

    IPC分类号: G01N27/04

    摘要: A flexible chemiresistor (CR) sensor for sensing a molecule of interest in a fluid (liquid or gas) is provided. The flexible CR sensor comprises a flexible chemiresistor (CR) module. The flexible CR module comprises a flexible substrate such polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polyimide (PI), and a thin film nanoparticle assembly assembled on the flexible substrate. The thin film nanoparticle assembly comprises metal or metal alloy core, ligand-capped nanoparticles and molecular linkers connecting the nanoparticles. The flexible CR sensor and an intelligent pattern recognition engine can be incorporated in a handheld device that can detect a molecule of interest in a fluid (e.g., a liquid or gas) accurately, rapidly, and without false positives. Any sensing array nanomaterial, pattern recognition, and compact/or electronic hardware can be integrated to achieve a desired detection limit and response speed.

    摘要翻译: 提供了用于感测流体(液体或气体)中感兴趣的分子的柔性化学电阻(CR)传感器。 灵活的CR传感器包括灵活的化学电阻(CR)模块。 柔性CR模块包括柔性基底如聚对苯二甲酸乙二醇酯(PET),聚萘二甲酸乙二醇酯(PEN)或聚酰亚胺(PI))和组装在柔性基底上的薄膜纳米颗粒组件。 薄膜纳米颗粒组件包括金属或金属合金芯,配体封端的纳米颗粒和连接纳米颗粒的分子连接体。 灵活的CR传感器和智能模式识别引擎可以并入到能够精确,快速,无假阳性的情况下在流体(例如,液体或气体)中检测感兴趣的分子的手持设备中。 可以集成任何感测阵列纳米材料,图案识别和紧凑型或电子硬件,以实现期望的检测极限和响应速度。

    Controlled synthesis of highly monodispersed gold nanoparticles
    14.
    发明授权
    Controlled synthesis of highly monodispersed gold nanoparticles 有权
    高度单分散金纳米颗粒的控制合成

    公开(公告)号:US07524354B2

    公开(公告)日:2009-04-28

    申请号:US11176021

    申请日:2005-07-07

    IPC分类号: B22F9/00

    摘要: A method of synthesizing highly monodispersed Au nanoparticles having diameters in the range of 30-90 nm. Seed nanoparticles in a controlled concentration are combined with a precursor, also in a controlled concentration, a reducing and capping agent (e.g., sodium acrylate) in aqueous solution. Under controlled conditions of pH, temperature, and time, highly monodispersed nanoparticles having diameters in the range of 30-100 nm are produced. A relative size standard deviation of the size distribution of the resulting nanoparticles is as low as 2%.

    摘要翻译: 合成直径在30-90nm范围内的高度单分散的Au纳米颗粒的方法。 受控浓度的种子纳米颗粒与水溶液中的还原和封端剂(例如丙烯酸钠)一起控制浓度的前体组合。 在pH,温度和时间的控制条件下,产生直径在30-100nm范围内的高度单分散的纳米颗粒。 所得纳米颗粒的尺寸分布的相对尺寸标准偏差低至2%。

    Fluid pumping system based on electrochemically-induced surface tension
changes
    17.
    发明授权
    Fluid pumping system based on electrochemically-induced surface tension changes 失效
    基于电化学诱导表面张力变化的流体泵送系统

    公开(公告)号:US5472577A

    公开(公告)日:1995-12-05

    申请号:US268846

    申请日:1994-06-30

    摘要: A pump for exerting a pumping force on a fluid in an attached conduit, the pump being actuated by a voltage from a power supply, the pump comprising a liquid metal pool, a containment vessel for confining the pool, an inner tubular member in hydraulic contact with the attached conduit and with an open end disposed in the pool to divide a free upper surface of the pool into an actuation surface and a working surface, an electrolyte in contact with the actuation surface, an electrode in contact with the electrolyte, and an electrode in contact with the pool, such that application of a voltage to the electrodes causes a surface tension change in the actuation surface and a resulting height change in the working surface, whereby a pumping action is transferred to the fluid in the attached conduit.

    摘要翻译: 用于在连接的管道中的流体上施加泵送力的泵,所述泵由来自电源的电压驱动,所述泵包括液体金属池,用于限制所述池的容纳容器,液压触点中的内部管状构件 具有附接的导管,并且开口端设置在池中以将池的自由上表面分成致动表面和工作表面,与致动表面接触的电解质,与电解质接触的电极,以及 与电池接触的电极,使得向电极施加电压导致致动表面中的表面张力变化和所产生的工作表面的高度变化,从而将泵送作用传递到附接导管中的流体。

    Aggregates of plural transition metal nanoparticles and plural cyanine dye molecules
    19.
    发明授权
    Aggregates of plural transition metal nanoparticles and plural cyanine dye molecules 有权
    多个过渡金属纳米颗粒和多个花青染料分子的聚集体

    公开(公告)号:US07869030B2

    公开(公告)日:2011-01-11

    申请号:US11961809

    申请日:2007-12-20

    IPC分类号: G01J3/44 G01N21/64 G01N21/65

    摘要: The present invention is directed to an aggregate composed of a plurality of nanoparticles of a transition metal and a plurality of cyanine dye molecules that are interacting non-covalently. The nanoparticles are capped with a capping molecule, while the cyanine dye molecule can be cationic, anionic, or neutral cyanine dye. Methods of making such aggregates and for using them in detection of an analyte are also disclosed.

    摘要翻译: 本发明涉及由过渡金属的多个纳米颗粒和非共价相互作用的多个花青染料分子组成的聚集体。 纳米颗粒用封端分子封盖,而花青染料分子可以是阳离子,阴离子或中性花青染料。 还公开了制备这种聚集体并将其用于检测分析物的方法。

    Low power electrically-driven microfluidic pumping/delivery device
    20.
    发明授权
    Low power electrically-driven microfluidic pumping/delivery device 有权
    低功耗电动微流体泵送/输送装置

    公开(公告)号:US06458256B1

    公开(公告)日:2002-10-01

    申请号:US09688049

    申请日:2000-10-13

    申请人: Chuan-Jian Zhong

    发明人: Chuan-Jian Zhong

    IPC分类号: C25B900

    CPC分类号: F04B19/006 F04B17/00

    摘要: An electrically-actuated microfluidic device for fluid delivery and pumping is described. The micropumping device is configured as a capillary tube containing immiscible electrolyte liquids that are subjected to an alternating electrical voltage. The electrical voltage causes the boundary between the two liquids to change its surface tension in a way that provides a pumping action. The micropump requires only a few volts and milliwatts in order to operate.

    摘要翻译: 描述了用于流体输送和泵送的电动微流体装置。 微型泵装置被配置为包含经受交流电压的不混溶电解质液体的毛细管。 电压导致两种液体之间的边界以提供泵送作用的方式改变其表面张力。 微型泵只需要几伏和毫瓦才能运行。