This paper investigates microneedle array electrodes for transcutaneous electrical nerve stimulation, and compares their performance with conventional surface electrodes. A three‐dimensional model of tissue was developed for finite element multiphysics simulations. Investigations included current density in different depths of a tissue, space constant under electrodes, specific absorption ratio of tissue, selectivity of stimulation, temperature rise, and blood flow. Results showed that microneedle electrodes have up to 10% higher selectivity than the surface electrodes. Furthermore, it was found that stimulation using microneedle electrodes provides more robust current density at different tissue depths compared to the surface electrode stimulation. Microneedle electrodes showed enhanced stimulation parameters, particularly for targeting a specific nerve in a specific depth of a tissue.

中文翻译：

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基于多物理场仿真的微针阵列电极改善经皮电神经刺激的研究。

本文研究了用于经皮电神经刺激的微针阵列电极，并将其性能与常规表面电极进行了比较。为有限元多物理场仿真开发了三维组织模型。研究包括组织不同深度的电流密度，电极下的空间常数，组织的比吸收率，刺激的选择性，温度上升和血流。结果表明，微针电极的选择性比表面电极高出10％。此外，发现与表面电极刺激相比，使用微针电极刺激在不同的组织深度处提供了更强的电流密度。微针电极显示增强的刺激参数，