Cooper Kevin R, Smith Matthew, Johnson Derek
Scribner Associates Inc., 150 E. Connecticut Avenue, Southern Pines, North Carolina 28387, USA.
Sensors (Basel). 2008 Mar 14;8(3):1774-1796. doi: 10.3390/s8031774.
The development of impedance-based array devices is hindered by a lack ofrobust platforms and methods upon which to evaluate and interrogate sensors. One aspectto be addressed is the development of measurement-time efficient techniques forbroadband impedance spectroscopy of large electrode arrays. The objective of this workwas to substantially increase the low frequency impedance measurement throughputcapability of a large channel count array analyzer by developing true parallel measurementmethods. The goal was achieved by Fourier transform-based analysis of simultaneouslyacquiredmulti-channel time-based current and voltage data. Efficacy and quantitativeanalysis of the parallel approach at frequencies less than ca. 10 Hz as well as a combinedsequential parallel approach for efficient broadband impedance spectroscopy over 5-orders of magnitude in frequency is demonstrated through complex impedancemeasurement of arrays consisting of up to 100 elements.
基于阻抗的阵列设备的发展受到缺乏用于评估和检测传感器的强大平台和方法的阻碍。需要解决的一个方面是开发用于大型电极阵列宽带阻抗谱的测量时间高效技术。这项工作的目标是通过开发真正的并行测量方法，大幅提高大通道数阵列分析仪的低频阻抗测量通量能力。该目标是通过对同时采集的多通道基于时间的电流和电压数据进行基于傅里叶变换的分析来实现的。通过对由多达100个元件组成的阵列进行复阻抗测量，证明了在频率小于约10 Hz时并行方法的有效性和定量分析，以及用于在5个数量级频率范围内进行高效宽带阻抗谱分析的组合顺序并行方法。
