Temperature response sensing and classification of analytes with porous optical films
    7.
    发明授权
    Temperature response sensing and classification of analytes with porous optical films 有权
    多孔光学薄膜的分析物的温度响应感测和分类

    公开(公告)号:US09007593B2

    公开(公告)日:2015-04-14

    申请号:US13811147

    申请日:2011-07-19

    IPC分类号: G01N21/00 G01N21/25 G01N21/17

    摘要: Methods and systems of the invention can determine the identity and quantity of analytes in a vapor. In preferred methods, a porous optical film is exposed to vapor which contains analyte. The porous optical film is heated and its optical response is monitored during heating. An optical response observed via heating can determine the identity and/or quantity of the analyte. In preferred embodiments, optical response during a thermal pulse is compared to a database of sensor responses that are characteristic of various analytes. Preferred methods are conducted a relatively low temperatures, for example below about 200° C. In preferred methods, a heating and cooling cycle produces a hysteresis curve in the optical response that is indicative of analytes. In preferred embodiments, a thermal reset pulse resets the porous optical film for later use and also provides an optical response that can be used for sensing.

    摘要翻译: 本发明的方法和系统可以确定蒸汽中分析物的身份和数量。 在优选的方法中,多孔光学膜暴露于含有分析物的蒸汽。 加热多孔光学膜并在加热期间监测其光学响应。 通过加热观察到的光学响应可以确定分析物的身份和/或数量。 在优选实施例中,将热脉冲期间的光学响应与各种分析物的特征的传感器响应的数据库进行比较。 优选的方法进行相对较低的温度,例如低于约200℃。在优选的方法中,加热和冷却循环在指示分析物的光学响应中产生滞后曲线。 在优选实施例中,热复位脉冲复位多孔光学膜用于稍后使用,并且还提供可用于感测的光学响应。

    Control of materials and porous magnetic particles
    8.
    发明授权
    Control of materials and porous magnetic particles 有权
    材料和多孔磁性颗粒的控制

    公开(公告)号:US08377147B2

    公开(公告)日:2013-02-19

    申请号:US12300369

    申请日:2007-05-16

    IPC分类号: B32B15/00 B44C1/22

    摘要: The present invention uses externally applied electromagnetic stimulus to control and heat porous magnetic particles and material associated with the particles. The particles contain magnetic material, such as superparamagnetic iron oxide and are infused with a material. Application of a DC magnetic field allows them to be moved with their infused material, and application of an AC RF electromagnetic field allows them to be heated with their infused material. The material can be infused into pores of the particles and the particles can also adhere to an aqueous droplet. The present invention also provides a multi-layer porous magnetic particle. The particle includes a host layer having pores sized to accept magnetic nanoparticles. Magnetic nanoparticles are infused within pores of the host layer. An encoding layer includes pores that define a spectral code. The pores in the encoding layer are sized to substantially exclude the magnetic nanoparticles. The encoding layer can also be a multi-layer, exhibiting, for example, a complex spectral code.

    摘要翻译: 本发明使用外部施加的电磁刺激来控制和加热与颗粒相关联的多孔磁性颗粒和材料。 颗粒包含磁性材料,例如超顺磁性氧化铁,并且注入材料。 直流磁场的应用使得它们可以通过其输入的材料移动,并且使用AC RF电磁场允许它们与其输入的材料一起被加热。 该材料可以注入到颗粒的孔中,并且颗粒也可以粘附到水滴上。 本发明还提供一种多层多孔磁性颗粒。 颗粒包括具有尺寸以接受磁性纳米颗粒的孔的主体层。 磁性纳米颗粒注入主体层的孔内。 编码层包括限定光谱代码的孔。 编码层中的孔的大小被确定为基本排除磁性纳米颗粒。 编码层也可以是多层,表现出例如复谱谱。

    SYSTEM AND METHOD FOR REMOTE, FREE-SPACE OPTICAL DETECTION OF POTENTIAL THREAT AGENT
    10.
    发明申请
    SYSTEM AND METHOD FOR REMOTE, FREE-SPACE OPTICAL DETECTION OF POTENTIAL THREAT AGENT 有权
    用于遥感,自由空间光学检测潜在威胁剂的系统和方法

    公开(公告)号:US20080204752A1

    公开(公告)日:2008-08-28

    申请号:US11680309

    申请日:2007-02-28

    IPC分类号: G01J3/46

    摘要: A system and method for free space, optical remote sensing of a potential threat agent using spectrally responsive sensor material. In one example the sensor material is formed by particles, which in one particular form are porous photonic crystals. The particles are dispersed into an area being monitored for the presence of the potential threat agent. A pair of lasers is used to generate optical light beams that are directed at the sensor particles after the particles have been dispersed. The light reflected by the sensor particles is then analyzed. The presence of the potential threat agent causes a shift in the spectral peak of light reflected from the sensor particles that can be sensed using photo detectors and a processing subsystem. The system can be tuned to remotely detect for specific chemical, biological or environmental agents that may be present within a given area.

    摘要翻译: 使用光谱响应传感器材料的自由空间,潜在威胁剂的光学遥感的系统和方法。 在一个示例中,传感器材料由颗粒形成,其在一种特定形式中是多孔光子晶体。 颗粒被分散到正在监测的潜在威胁剂的存在的区域中。 使用一对激光器在颗粒分散之后产生指向传感器颗粒的光束。 然后分析由传感器颗粒反射的光。 潜在威胁剂的存在导致从可以使用光电检测器和处理子系统感测的传感器颗粒反射的光的光谱峰值的偏移。 该系统可以被调整以远程检测可能存在于给定区域内的特定化学,生物或环境因素。