Characterization and fabrication of disposable screen printed microelectrodes
Characterization and fabrication of disposable screen printed microelectrodes
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DOI：
10.1016/j.elecom.2009.05.010
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发表时间：
2009-07-01
影响因子：
5.4
通讯作者：
Banks, Craig E.
中科院分区：
文献类型：
--
作者：
Kadara, Rashid O.;Jenkinson, Norman;Banks, Craig E.
我们报告了一次性和柔性丝网印刷微电极的制造，其特征在于显微镜和循环伏安法。这些新型丝网印刷电化学平台由微型石墨组成，半径通常为 60 至 100 微米，由惰性电介质定义。这种类型的电化学传感平台的优点是每个微电极都是一次性的且具有成本效益，因此在测量之间不需要大量的清洁或电极预处理。在测量之前，丝网印刷的微电极只需使用合适的氧化还原探针进行校准，就像微电极的典型情况一样。我们以通过阴极溶出伏安法测定铅为例，证明丝网印刷微电极有利于电分析测量。使用石墨丝网印刷微电极可以实现与文献中在声波掺硼金刚石电极上获得的检测限相当的检测限，而无需功率超声——否则会限制广泛的适用性和测量的简易性。 (c) 2009 Elsevier B.V. 保留所有权利。
We report the fabrication of disposable and flexible screen printed microelectrodes which are characterised with microscopy and cyclic voltammetry. These new type of screen printed electrochemical platforms consist of micro-sized graphite typically with radii of 60 to 100 microns are defined by an inert dielectric. The advantage of this type of electrochemical sensing platform is that each microelectrode is disposable and cost effective and thus does not require extensive cleaning or electrode pre-treatment between measurements. Prior to measurements the screen printed microelectrode needs only to be calibrated with a suitable redox probe, as is typically the case with microelectrodes. We show proof of concept that the screen printed microelectrodes are advantageous for electro-analytical measurements with the example of determination of lead via cathodic stripping voltammetry. The use of graphite screen printed microelectrodes allows comparable detection limits to that obtained in the literature at insonated boron doped diamond electrodes, without the need for power ultrasound - which otherwise limits the widespread applicability and ease of measurement. (c) 2009 Elsevier B.V. All rights reserved.