DIFFUSIONAL MASS-TRANSPORT TO MICROBAND ELECTRODES OF PRACTICAL GEOMETRIES - A SIMULATION STUDY USING THE STRONGLY IMPLICIT PROCEDURE
DIFFUSIONAL MASS-TRANSPORT TO MICROBAND ELECTRODES OF PRACTICAL GEOMETRIES - A SIMULATION STUDY USING THE STRONGLY IMPLICIT PROCEDURE
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DOI：
10.1016/0022-0728(95)03923-5
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发表时间：
1995-06-01
影响因子：
4.5
通讯作者：
SANDERS, GHW
中科院分区：
文献类型：
--
作者：
ALDEN, JA;BOOTH, J;SANDERS, GHW
用强隐式方法模拟了偏离理想状态的微带电极结构的纯扩散计时电流响应。具体而言，重点关注四种电极形状：凸起的微带电极(具有导电支撑面)、凹陷的微带电极(具有绝缘坑壁)、平台电极(具有绝缘支撑面)以及为了比较的目的，假设线电极没有任何支撑物，其允许扩散质量传输到无限薄电极的两侧。在所有情况下，短时暂态都可以用简单的解析表达式来描述，其中电极区域上的线性扩散(S)和非线性扩散对电极周长的贡献是明显可区分的。
The strongly implicit procedure is used to model the diffusion-only chronoamperometric responses of microband electrode geometries which deviate from the ideal. Specifically, attention is focused on four electrode shapes: elevated microband electrodes (with conducting supporting sides), recessed microband electrodes (with insulating pit walls), platform electrodes (with insulating supporting sides) and, for the purposes of comparison, a hypothetical line electrode without any support which permits diffusional mass transport to both sides of the infinitesimally thin electrode. In all cases the short time transient is found to be described by simple analytical expressions in which the contributions from linear diffusion over the electrode area(s) and non-linear diffusion to the electrode perimeters are clearly distinguishable.