期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 35, 页码 19700-19708出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b05001
关键词
ultrathin gold nanowires; polyaniline; electronic skin; strain sensor; wearable
资金
- ARC [DP120100170, DP150103750]
- Chinese Scholarship Council
Wearable and highly sensitive strain sensors are essential components of electronic skin for future biomonitoring and human machine interfaces. Here we report a low-cost yet efficient strategy to dope polyaniline micropartides into gold nanowire (AuNW) films, leading to 10 times enhancement in conductivity and times improvement in sensitivity. Simultaneously, tattoolike wearable sensors could be fabricated simply by a direct draw-on strategy with a Chinese penbrush. The stretchability of the sensors could be enhanced from 99.7% to 149.6% by designing curved tattoo with different radius of curvatures. We also demonstrated roller coating method to encapusulate AuNWS sensors, exhibiting excellent water resistibility and durability. Because of improved conductivity of our sensors, they can directly interface with existing wireless circuitry, allowing for fabrication of wireless flexion sensors for a human finger-controlled robotic arm system.
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