ABE-Stat, a Fully Open-Source and Versatile Wireless Potentiostat Project Including Electrochemical Impedance Spectroscopy
ABE-Stat, a Fully Open-Source and Versatile Wireless Potentiostat Project Including Electrochemical Impedance Spectroscopy
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DOI：
10.1149/2.0061909jes
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发表时间：
2019-03-23
影响因子：
3.9
通讯作者：
McLamore, Eric S.
中科院分区：
文献类型：
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作者：
Jenkins, Daniel M.;Lee, Bog Eum;McLamore, Eric S.
材料科学和分子相互作用方面令人兴奋的发现催生了许多有前途的电化学生物传感器技术。紧凑、高质量的仪器对于适应这些新技术至关重要，特别是在农业和食品工业的分布式应用中。为此，我们开发了ABE-Stat，这是一个完全开源的电池供电的恒电位仪项目，包括一个无线Android接口。ABE-Stat能够进行常规的电化学分析，包括循环伏安法(CV)、微分脉冲伏安法(DPV)、高阻抗电位测量，并可以通过WiFi直接连接到互联网或通过Android接口间接连接到互联网。重要的是，它是第一个完全开源的恒电位仪，能够评估宽频谱(0.1赫兹到100千赫)的电化学阻抗谱(EIS)，用户可以选择幅度和偏置。观察到电流噪声比嵌入式24位模数转换器(ADC)的标称分辨率大一个数量级以上，但与实际ADC规格基本一致。在这份手稿中，我们分享了ABE-Stat的详细文档，包括硬件设计和源代码，以及对所有可用分析的性能评估。我们还建议改进设计，以提高ABE-STAT的噪声性能和整个频谱的EIS测量的一致性。(C)作者(S)2019年。由ECS出版。
Exciting discoveries in material science and molecular interactions are resulting in many promising electrochemical biosensor technologies. Compact, high-quality instrumentation is critical to adaptation of these new technologies especially for distributed applications in the agriculture and food industries. To this end, we have developed ABE-Stat, a fully open-source, battery-powered potentiostat project including a wireless Android interface. ABE-Stat is capable of conducting routine electrochemical analyses including cyclic voltammetry (CV), differential pulse voltammetry (DPV), high impedance potentiometric measurements, and can connect directly to the internet through WiFi or indirectly through the Android interface. Importantly it is the first fully open-source potentiostat capable of evaluating electrochemical impedance spectroscopy (EIS) across a wide frequency spectrum (0.1 Hz to 100 kHz) with user selectable amplitude and bias. Current noise was observed to be over an order of magnitude larger than the nominal resolution of the embedded 24-bit analog to digital converter (ADC), but were largely consistent with the actual ADC specifications. In this manuscript we share detailed documentation for ABE-Stat including hardware design and source code, and evaluation of the performance of all avaiable analyses. We also suggest design improvements that could improve the noise performance of ABE-Stat and consistency of EIS measurements across the spectrum. (C) The Author(s) 2019. Published by ECS.