Tattoolike Polyaniline Microparticle-Doped Gold Nanowire Patches as Highly Durable Wearable Sensors

详细信息    查看全文

• 作者：Shu Gong ; Daniel T.H. Lai ; Yan Wang ; Lim Wei Yap ; Kae Jye Si ; Qianqian Shi ; Naveen Noah Jason ; Tam Sridhar ; Hemayet Uddin ; Wenlong Cheng
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2015
• 出版时间：September 9, 2015
• 年：2015
• 卷：7
• 期：35
• 页码：19700-19708
• 全文大小：632K
• ISSN：1944-8252

文摘

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 microparticles into gold nanowire (AuNW) films, leading to 10 times enhancement in conductivity and 鈭? times improvement in sensitivity. Simultaneously, tattoolike wearable sensors could be fabricated simply by a direct 鈥渄raw-on鈥?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.