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    • 9. 发明申请
    • NONLINEAR, BIFURCATION-BASED MASS SENSOR
    • 非线性,基于BIFURATION的质量传感器
    • US20130047710A1
    • 2013-02-28
    • US13595929
    • 2012-08-27
    • Jeffrey Frederick RhoadsVjay Kumar
    • Jeffrey Frederick RhoadsVjay Kumar
    • G01N29/02
    • G01N29/022G01N29/036G01N29/4472G01N2291/0224G01N2291/02809
    • Nonlinear sensors, which actively exploit dynamic transitions across sub-critical or saddlenode bifurcations in the device's frequency response, can exhibit improved performance metrics and operate effectively at smaller scales. This sensing approach directly exploits chemomechanically induced amplitude shifts for detection. Accordingly, it has the potential to eliminate the need for numerous power-consuming signal processing components in final sensor implementations. Various embodiments pertain to low-cost, linear and nonlinear bifurcation-based mass sensors founded upon selectively functionalized, piezoelectrically actuated microcantilevers. Yet other embodiments pertain to an amplitude-based sensing approach based upon dynamic transitions across saddle-node bifurcations that exist in a sensor's nonlinear frequency response.
    • 非线性传感器可以在器件的频率响应中主动利用跨临界或者saddlenode分岔的动态转换,可以显示出改进的性能指标,并以更小的规模有效地进行操作。 该感测方法直接利用化学机械诱导的振幅移动进行检测。 因此,它有可能在最终的传感器实现中消除对大量功耗信号处理组件的需要。 各种实施例涉及基于选择性功能化的压电致动微悬臂梁的基于低成本,线性和非线性分叉的质量传感器。 其他实施例涉及基于幅度的感测方法,其基于存在于传感器的非线性频率响应中的跨越鞍形节点分叉的动态转换。