Conductive multi-walled carbon nanotube (MWCNT)/polydimethylsiloxane (PDMS) nanocomposites were prepared via solution method and their conductive micro-patterns were made using the doctor blade technique. The prepared patterns were characterized via scanning electron microscopy (SEM), cyclic voltam-metry, and four-point probe conductivity meter. SEM images of the cross-sections of micro-patterns revealed that by increasing MWCNT concentration from 5 to 10%, while the dense and smooth bulk structure converted to a brittle one, their conductivities raised from 0.07 up to 0.33 S/cm. These micro-patterns preserved their conductivities under high bending cycles except for high MWCNT loading which loses almost half of its conductivity. The cyclic voltammetry analyses showed that MWCNT/ PDMS conductive micro-patterns had supercapacitor properties. The specific capacitance of the composite containing 10 wt% of MWCNT was 0.35 F/g These nanocomposites can be used in cochlear implants due to their high conductivities. Their low working voltages ensure the safety of the neural tissues.

中文翻译：

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MWCNT / PDMS导电微粉化纳米复合材料的制备

导电多壁碳纳米管（MWCNT）/聚二甲基硅氧烷（PDMS）纳米复合材料是通过溶液法及其导电微图案是使用刮刀技术制成的。通过扫描电子显微镜（SEM），循环伏安法和四点探针电导率仪对制备的图案进行表征。微观图案截面的SEM图像显示，通过将MWCNT浓度从5％增加到10％，虽然致密而光滑的块状结构转变为脆性结构，但其电导率却从0.07上升到0.33 S / cm。这些微图案在高弯曲循环下保持了电导率，但高MWCNT负载却失去了几乎一半的电导率。循环伏安法分析表明，MWCNT / PDMS导电微图案具有超级电容器性能。包含10 wt％MWCNT的复合材料的比电容为0。35 F / g这些纳米复合材料因其高电导率而可用于人工耳蜗。它们的低工作电压确保了神经组织的安全。