Mechanical properties of surface microstructures of metal dry bioelectrode

作者：Zhou, Wei^*; Liu, Shaoyu; Li, Yaoyao; Zhang, Chenying; She, Haotian; Zhu, Jinying

来源：Sensors and Actuators A: Physical , 2018, 280: 170-178.

DOI：10.1016/j.sna.2018.07.041

• Metal dry
• Bioelectrode
• Surface microstructures
• Laser
• Micromilling mechanical strength
• Insertion performance

The metal dry bioelectrodes have been developed to measure the bioelectrical signals. In this study, the laser micromilling process as an economical and high efficiency way was proposed to fabricate the metal dry bioelectrodes with surface microstructure array. The measuring principle of material hardness was adopted to characterize the mechanical properties of surface microstructures of metal dry bioelectrodes. Moreover, the compressive strength of surface microstructures of metal dry bioelectrodes fabricated with different scan spacings was discussed, and then the bending strength and insertion performance of surface microstructures of metal dry bioelectrodes were further investigated. The results show that surface microstructures of bioelectrode fabricated using three scan spacings including 100 mu m, 150 mu m and 200 mu m exhibited better compressive performance. When the 100 mu m scan spacing was selected, the surface microstructures of metal dry bioelectrodes presented larger bending strength, and it could successfully penetrate the silicon film with a small pressure about 1.48 N.

• 出版日期2018-9-1
• 单位北京理工大学; 厦门大学