Rapid impedance scanning QCM for electrochemical applications based on miniaturized hardware and high-performance curve fitting
Rapid impedance scanning QCM for electrochemical applications based on miniaturized hardware and high-performance curve fitting
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基于小型化硬件和高性能曲线拟合的电化学应用快速阻抗扫描QCM
DOI：
10.1016/j.electacta.2008.04.079
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发表时间：
2008
影响因子：
6.6
通讯作者：
H. Gores
中科院分区：
文献类型：
--
作者：
Franz Wudy;M. Multerer;C. Stock;G. Schmeer;H. Gores
描述了用于 QCM 测量的阻抗系统，该系统比现有振荡器方法产生更高的信息内容。新系统价格优惠，并且适合安装在小型印刷电路板上。使用具有专用软件算法的个人计算机可以快速拟合所收集的数据，并且无需改变硬件即可实现高度灵活性。结果表明，该 QCM 设备能够使用在电化学中不太常用的小型且非常便宜的 0.55 英寸尺寸来收集稳定且高质量的数据。直径石英器件，即使在重负载下也是如此。可以在 200ms 内以 0.2Hz 的分辨率扫描包含串行和并行谐振频率、带宽为 20kHz 的全频谱。降低要求，例如仅通过扫描串联谐振频率，可以大大缩短采集时间。使用已知的电化学任务（例如铜沉积、溶解和苯胺的电聚合）来检查如此开发的电化学应用（EQCM）。
An impedance system for QCM measurements is described which produces a much higher information content than existing oscillator methods. The new system is favourably priced, and fits on a small single printed circuit board. The use of a personal computer with a dedicated software algorithm enables fast fitting of the collected data and allows high flexibility without the need of a change in hardware. It was shown that this QCM device is able to collect stable and high-quality data with the – in electrochemistry not very commonly used – small and very inexpensive 0.55in. diameter quartz devices, even under heavy load. A full spectrum containing serial and parallel resonance frequencies, with a band width of 20kHz can be scanned within 200ms at a resolution of 0.2Hz. Lowering requirements, e.g. by scanning series resonance frequency only, the acquisition time can be reduced drastically. The electrochemical applications (EQCM) so developed was checked using known electrochemical tasks such as copper deposition, dissolution and the electropolymerization of aniline.