公开(公告)号：EP2904380A1

公开(公告)日：2015-08-12

申请号：EP13848232.8

申请日：2013-10-25

Applicant: COLORADO STATE UNIVERSITY RESEARCH FOUNDATION

Inventor： LEAR, Kevin ,  ERICKSON, Timothy

IPC: G01N21/41 ,  H01L27/14

CPC classification number: G01N21/4133 ,  G01N21/7703 ,  G01N2021/7793 ,  G01N2201/0833 ,  H01L31/105 ,  H01L31/1085

Abstract: An analyte-detection system has an optical waveguide with first and second cladding layers adjacent a core; a light source coupled to provide light to the waveguide; a photodetector such as a metal- semiconductor- metal, vertical PIN, or horizontal PIN photodetectors, the photodetector having an absorber configured to detect light escaping from the waveguide through the first cladding layer; multiple, separate, photocurrent collectors, where each photocurrent collector collects current from a separate portion of the photodetector absorber; and at least one current-sensing amplifier for receiving photocurrent. The photodetector absorber is an undivided absorber region for multiple photocurrent collectors. Either separate amplifiers are provided for each of the multiple photocurrent collection lines, or multiplexing logic couples selected photocurrent collectors to amplifiers, while coupling unselected photocurrent collectors to a bias generator.

Abstract translation: 分析物检测系统具有光波导，其中第一和第二包覆层与芯相邻; 耦合以向所述波导提供光的光源; 诸如金属 - 半导体 - 金属，垂直PIN或水平PIN光电检测器的光电检测器，所述光电检测器具有被配置为检测从所述波导通过所述第一包层逸出的光的吸收体; 多个独立的光电流集电器，其中每个光电流集电器从光电检测器吸收器的分开的部分收集电流; 以及用于接收光电流的至少一个电流感测放大器。 光电检测器吸收器是用于多个光电流收集器的不分开的吸收区域。 为多个光电流收集线中的每一个提供单独的放大器，或者将选择的光电流收集器耦合到放大器，同时将未选择的光电流收集器耦合到偏置发生器。

公开(公告)号：EP2994785A1

公开(公告)日：2016-03-16

申请号：EP14794194.2

申请日：2014-05-08

Applicant: Colorado State University Research Foundation

Inventor： LEAR, Kevin ,  ERICKSON, Tim

IPC: G02B6/10 ,  G02B6/028 ,  G02B27/56

CPC classification number: G01N21/4133 ,  G01M11/33 ,  G01N33/1833 ,  G01N2021/4166 ,  G01N2201/0873 ,  G02B6/028 ,  G02B6/12004 ,  G02B6/1221 ,  G02B6/4291 ,  G02B27/56 ,  G02B2006/12123 ,  G02B2006/12138 ,  Y02A20/206

Abstract: A chip-scale, reusable sensor can detect aromatic hydrocarbons, such as benzene, toluene, ethylbenzene, and xylenes (BTEX), rapidly in water without sample preparation. The device is capable of real-time, continuous monitoring for BTEX solutes, which diffuse into a film, such as a polymer, on the sensors surface. In operation, BTEX analytes concentrate in the film, causing an increase in refractive index, which modulates evanescent coupling into the chips integrated photodetector array. Integration of the photodetector array simplifies system instrumentation and permits incorporation of an on-chip photocurrent reference region in the immediate vicinity of the sensing region, reducing drift due to temperature fluctuations. In some examples, the chip responds linearly for BTEX concentrations between 1 ppm and 30 ppm, with a limit of detection of 359 ppb, 249 ppb, and 103 ppb for benzene, toluene, and xylene in water, respectively.

Abstract translation: 芯片规模可重复使用的传感器可以在无需样品制备的情况下快速检测芳烃，如苯，甲苯，乙苯和二甲苯（BTEX）。 该装置能够实时，连续地监测传感器表面上扩散到薄膜（如聚合物）中的BTEX溶质。 在操作中，BTEX分析物集中在膜中，引起折射率的增加，其调节到芯片集成光电检测器阵列中的ev逝耦合。 光电检测器阵列的集成简化了系统仪器，并且允许在感测区域附近并入片上光电流参考区域，从而减少由于温度波动引起的漂移。 在一些实例中，芯片对于1ppm和30ppm之间的BTEX浓度线性反应，分别在苯，苯和二甲苯的检测限为359ppb，249ppb和103ppb。