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    • 22. 发明申请
    • GERMANIUM-BASED POLYMERS AND PRODUCTS FORMED FROM GERMANIUM-BASED POLYMERS
    • 基于锗的聚合物和从基于锗的聚合物形成的产品
    • US20100136769A1
    • 2010-06-03
    • US11614934
    • 2006-12-21
    • MAJID KESHAVARZGuojun Liu
    • MAJID KESHAVARZGuojun Liu
    • H01L21/20C08G79/00
    • C08J3/12C08J2343/00
    • Germanium-based polymers are described. In one embodiment, a germanium-based polymer includes a structure given by the formula: [GeR]n, wherein n is a non-negative integer that is at least one, and R is selected from a wide variety of groups, such as alkyl groups, alkenyl groups, alkynyl groups, aryl groups, iminyl groups, and so forth. Also described are methods of forming germanium-based polymers, methods of forming nanoparticles from germanium-based polymers, methods of forming nanostructured materials from germanium-based polymers, nanoparticles formed from germanium-based polymers, nanostructured materials formed from germanium-based polymers, and devices formed from germanium-based polymers.
    • 描述了基于锗的聚合物。 在一个实施方案中,锗基聚合物包括由下式给出的结构:[GeR] n,其中n是至少为1的非负整数,并且R选自多种基团,例如烷基 基团,烯基,炔基,芳基,亚氨基等。 还描述了形成锗基聚合物的方法,从基于锗的聚合物形成纳米颗粒的方法,从锗基聚合物形成纳米结构材料的方法,由锗基聚合物形成的纳米颗粒,由锗基聚合物形成的纳米结构材料,以及 由锗基聚合物形成的器件。
    • 28. 发明授权
    • Chemical sensor and coating for same
    • 化学传感器和涂层相同
    • US06534319B1
    • 2003-03-18
    • US09413676
    • 1999-10-06
    • Guojun Liu
    • Guojun Liu
    • G01N27416
    • G01N29/036G01N1/2202G01N1/2226G01N1/24G01N33/0047G01N2001/2223G01N2001/2241G01N2001/242G01N2291/0257Y10S436/806Y10T436/19
    • A chemical sensor utilizing a substrate and a fluoropolymer coating is disclosed. Transducers may be connected to the substrate to generate an alternating potential across the substrate, which in turn causes the substrate to resonate due to the converse piezoelectric effect. The polymer coating absorbs the analyte, thus changing the mass of the sensor, and accordingly changing its resonant frequency. The transducers detect this change in resonant frequency to indicate to the operator that the analyte is present. The use of amorphous copolymers of 2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole (PDD), and tetrafluoroethylene (TFE) allows for improved sensitivity and responsiveness while also allowing for robust characteristics enabling the sensor to be used in a variety of environmental conditions.
    • 公开了一种利用基底和含氟聚合物涂层的化学传感器。 传感器可以连接到衬底以在衬底上产生交替电位,这又导致衬底由于相反的压电效应而谐振。 聚合物涂层吸收分析物,从而改变传感器的质量,从而改变其共振频率。 传感器检测谐振频率的这种变化,以向操作者指示分析物存在。 使用2,2-双三氟甲基-4,5-二氟-1,3-二氧杂环戊烯(PDD)和四氟乙烯(TFE)的无定形共聚物可以提高灵敏度和响应性,同时还允许使用传感器的坚固特性 在各种环境条件下。
    • 29. 发明授权
    • Chemical sensor and coating for same
    • 化学传感器和涂层相同
    • US06432362B1
    • 2002-08-13
    • US09413401
    • 1999-10-06
    • Ruth ShinarGuojun LiuMarc D. Porter
    • Ruth ShinarGuojun LiuMarc D. Porter
    • G01N2700
    • G01N29/022G01N2291/014G01N2291/0212G01N2291/0222G01N2291/0256G01N2291/0423G01N2291/0426G01N2291/0427
    • An acoustic wave based-chemical sensor utilizing a crystal substrate and a coating of at least two blended materials is disclosed. The blended materials comprise a combination of (a) a high glass transition temperature polymer or a material of high melting point, and (b) a low glass transition temperature polymer or a material having a low melting point. Transducers are connected to the crystal substrate to generate an alternating potential across the crystal substrate, which in turn causes the crystal to resonate due to the converse piezoelectric effect. The blended coating absorbs the analyte, thus changing the mass of the chemical sensor, and accordingly changing its resonant frequency. The transducers detect this change in resonant frequency to indicate that the analyte is present. The use of blended materials results in a thicker coating combining the preferred properties of the blend constituents, such as improved detection sensitivities, faster response times, less acoustic wave damping, and higher operational temperature ranges.
    • 公开了一种使用晶体基底的基于声波的化学传感器和至少两种混合材料的涂层。 混合材料包括(a)高玻璃化转变温度聚合物或高熔点材料的组合,和(b)低玻璃化转变温度聚合物或具有低熔点的材料。 传感器连接到晶体衬底以在晶体衬底之间产生交替电位,这又导致晶体由于相反的压电效应而谐振。 混合涂层吸收分析物,从而改变化学传感器的质量,从而改变其共振频率。 传感器检测谐振频率的这种变化,以表明分析物存在。 混合材料的使用导致较厚的涂层结合混合物组分的优选性能,例如改进的检测灵敏度,更快的响应时间,更少的声波阻尼和更高的操作温度范围。