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    • 9. 发明申请
    • Detection apparatus and associated method
    • 检测装置及相关方法
    • US20070086915A1
    • 2007-04-19
    • US11480068
    • 2006-06-30
    • Steven LeBoeufPeter SandvikRadislav Potyrailo
    • Steven LeBoeufPeter SandvikRadislav Potyrailo
    • G01N31/22
    • G01N33/54366G01N21/6428G01N21/645G01N33/54373G01N2021/7786
    • An apparatus includes an article and a detector. The article includes a substrate, a faceted structure disposed on the substrate, and a sensor layer disposed on the faceted structure. The faceted structure is disposed on the substrate first surface and itself has a surface. The faceted structure surface has peripheral edge defining a diameter of the faceted structure surface. The sensor layer is disposed on the faceted structure surface. The sensor layer can react or can interact with a target species when the target species is sufficiently proximate to the sensor layer. The sensor layer responds to the reaction or to the interaction in a detectable manner. The detector detects a response to the reaction, or to the interaction, of the target species with the sensor layer.
    • 一种装置包括物品和检测器。 该物品包括基底,设置在基底上的刻面结构以及设置在刻面结构上的传感器层。 小面结构设置在基板第一表面上并且本身具有表面。 小面结构表面具有限定小平面结构表面直径的周缘。 传感器层设置在刻面结构表面上。 当目标物种足够靠近传感器层时,传感器层可以与目标物种反应或相互作用。 传感器层以可检测的方式响应于反应或相互作用。 检测器检测到目标物种与传感器层的反应或相互作用的响应。
    • 10. 发明申请
    • Detection system including avalanche photodiode for use in harsh environments
    • 检测系统包括用于恶劣环境的雪崩光电二极管
    • US20050098844A1
    • 2005-05-12
    • US10994980
    • 2004-11-19
    • Peter SandvikDale BrownStephen ArthurKevin MatochaJames Kretchmer
    • Peter SandvikDale BrownStephen ArthurKevin MatochaJames Kretchmer
    • G01J1/02H01J20060101H01L31/0232H01L31/0248H01L31/0304H01L31/0312H01L31/0352H01L31/06H01L31/062H01L31/107H01L31/113H01L31/115
    • H01L31/02322H01L31/02161H01L31/03044H01L31/0312H01L31/035281H01L31/107H01L31/115
    • An aspect of the present invention is directed to an avalanche photodiode (APD) device for use in oil well drilling applications in harsh, down-hole environments where shock levels are near 250 gravitational acceleration (G) and/or temperatures approach or exceed 150° C. Another aspect of the present invention is directed to an APD device fabricated using SiC materials. Another aspect of the present invention is directed to an APD device fabricated using GaN materials. According to an embodiment of the present invention, an avalanche photodiode for detecting ultraviolet photons comprises a substrate having a first dopant; a first layer having the first dopant, positioned on top of the substrate; a second layer having a second dopant, positioned on top of the first layer; a third layer having a second dopant, positioned on top of the second layer; a passivation layer for providing electrical passivation on a surface of the avalanche photodiode; a phosphorous silicate glass layer for limiting mobile ion transport, positioned on top of the third layer; and a pair of metal electrodes for providing an ohmic contact wherein a first electrode is positioned below the substrate and a second electrode is positioned above the third layer; wherein the avalanche photodiode comprises a first sidewall and a second sidewall forming a sloped mesa shape; and wherein the avalanche photodiode operates in an environment comprising a temperature approximately equal to 150 degrees Celsius.
    • 本发明的一个方面涉及一种雪崩光电二极管(APD)装置,用于在冲击水平接近250重力加速度(G)和/或温度接近或超过150°的恶劣的井下环境中的油井钻井应用 C.本发明的另一方面涉及使用SiC材料制造的APD器件。 本发明的另一方面涉及使用GaN材料制造的APD器件。 根据本发明的实施例,用于检测紫外光子的雪崩光电二极管包括具有第一掺杂剂的衬底; 具有第一掺杂剂的第一层,位于衬底的顶部; 具有位于所述第一层的顶部上的具有第二掺杂剂的第二层; 具有第二掺杂剂的第三层,位于所述第二层的顶部; 用于在雪崩光电二极管的表面上提供电钝化的钝化层; 用于限制移动离子迁移的磷硅酸盐玻璃层,位于第三层的顶部; 以及用于提供欧姆接触的一对金属电极,其中第一电极位于所述衬底下方,并且第二电极位于所述第三层之上; 其中所述雪崩光电二极管包括形成倾斜台面形状的第一侧壁和第二侧壁; 并且其中所述雪崩光电二极管在包括大约等于150摄氏度的温度的环境中操作。