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    • 6. 发明申请
    • DYNAMICS BIONEMS SENSORS AND ARRAYS OF BIONEMS SENSOR IMMERSED IN FLUIDS
    • 动力传感器和液体传感器的传感器阵列
    • WO2003095616A2
    • 2003-11-20
    • PCT/US2003/014284
    • 2003-05-07
    • CALIFORNIA INSTITUTE OF TECHNOLOGYROUKES, Michael, L.FRASER, Scott, E.SOLOMON, Jerry, E.CROSS, Michael, C.ARLETT, Jessica, L.
    • ROUKES, Michael, L.FRASER, Scott, E.SOLOMON, Jerry, E.CROSS, Michael, C.ARLETT, Jessica, L.
    • C12N
    • G01N33/54373
    • A bioNEMS device comprises a piezoresistive cantilever having flexing legs of which attach the cantilever to a support and a biofunctionalized portion at the tip. A bias current applied to the legs is limited by a maximal acceptable temperature increase at the biofunctionalized tip. The length of the cantilever has a magnitude chosen to minimize background Johnson noise. A catalyzed receptor on the device binds to a ligand whose binding rate coefficient is enhanced. The catalyst lowers the receptor-ligand binding activation energy and is designed by forced evolution to preferentially bind with the ligand. A carrier signal is injected by a magnetic film disposed on the cantilever which is electromagnetically coupled to a source of the carrier signal. A plurality of NEMS fluidicly coupled transducers generate a plurality of output signals from which a collective output signal is derived, either by averaging or thresholding. The NEMS devices are disposed in microfluidic flow channels and fabricated in a membrane. A linking molecule is attached to the tip of the transducer and a fluffball attached to the linking molecule to increase damping.
    • bioNEMS装置包括压阻悬臂,其具有将悬臂连接到支撑件上的弯曲腿和尖端处的生物功能化部分。 施加到腿上的偏置电流受生物功能化尖端的最大可接受的温度升高的限制。 悬臂的长度具有选择的最小化背景约翰逊噪声的大小。 器件上的催化受体与结合速率系数增强的配体结合。 催化剂降低受体 - 配体结合活化能,并通过强制进化来优先与配体结合而设计。 载体信号由布置在悬臂上的磁膜注入,该磁膜电磁耦合到载波信号源。 多个NEMS流体耦合的换能器产生多个输出信号,通过平均或阈值从该输出信号导出集体输出信号。 NEMS装置设置在微流体流动通道中并制成膜。 连接分子连接到换能器的尖端,并且连接到连接分子上的绒毛增加阻尼。