Microfabricated Needle-Arrays for Stimulation of Tactile Receptors
Microfabricated Needle-Arrays for Stimulation of Tactile Receptors
复制标题
用于刺激触觉感受器的微加工针阵列
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
N. Miki
中科院分区：
文献类型：
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作者：
N. Kitamura;J. Chim;N. Miki
本文描述了带有微针电极的电触觉显示器。电触觉显示器可以通过用电流刺激触觉感受器来显示触觉。微针电极可以大大降低电阻抗，因为微针可以穿透比真皮阻抗更高的角质层。此外，调整针的长度使我们能够无痛地刺激触觉感受器。电触觉显示器的微针电极的形状影响触觉。当针尖半径太小时，由于接触面积小，手指和微针之间的阻抗变大。另一方面，当针尖半径较大时，针无法穿过手指表面，并且阻抗没有充分降低。在这项工作中，我们开发了微针阵列和使用微针电极阵列的电触觉显示器的制造工艺。我们通过实验证实了针电极装置相对于平面装置的优越性，并推导出用于电触觉显示应用的微针电极的最佳形状。
This paper describes electro tactile display with micro-needle electrodes. The electro tactile display can display the tactile sensations by stimulating tactile receptors with electric currents. Micro-needle electrodes can drastically decrease the electrical impedance because the needles can penetrate through the stratum corneum which has higher impedance than dermis. In addition, adjusted length of the needle allows us to stimulate the tactile receptors with no pain. The shape of micro-needle electrodes of an electro tactile display affects the tactile sensation. When the tip radius of the needle is too small, the impedance between finger and micro-needles becomes large due to the small contact area. On the other hand, when the needle tip has a large radius, the needle cannot go through the surface of fingers and the impedance does not decrease enough. In this work, we developed fabrication processes of a micro-needle array and an electrotactile display using the micro needle electrode array. We experimentally confirmed the superiority of needle electrode devices to flat devices and deduced the optimum shape of the micro-needle electrodes for electro tactile display applications.