A One-Step Method of Hydrogel Modification by Single-Walled Carbon Nanotubes for Highly Stretchable and Transparent Electronics
A One-Step Method of Hydrogel Modification by Single-Walled Carbon Nanotubes for Highly Stretchable and Transparent Electronics
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DOI：
10.1021/acsami.8b08409
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发表时间：
2018-08-22
影响因子：
9.5
通讯作者：
Nasibulin, Albert G.
中科院分区：
文献类型：
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作者：
Gilshteyn, Evgenia P.;Lin, Shaoting;Nasibulin, Albert G.
导电性水凝胶（ECHs）因其独特的性能引起了生物材料科学领域的广泛关注。然而，如何在聚合物水凝胶基质中有效地掺入和分散导电材料以提高导电性仍然是一个巨大的挑战。在这里，我们展示了由单壁碳纳米管（SWCNTs）修饰的高透明、导电、可拉伸的坚韧水凝胶。研究了制备swcnts /水凝胶结构的两种不同方法：将简单的swcnts薄膜转移到制备好的水凝胶上，以及将薄膜沉积到预拉伸的水凝胶上。我们的方法的功能是通过扫描电子显微镜以及我们的结构的光学和电学测量，同时使它们受到不同的应变证实。由于基于水凝胶的结构本质上是柔软的、可拉伸的、湿润的和粘性的，它们很好地符合人类的皮肤。我们展示了我们的材料在皮肤状被动电极和主动手指关节运动传感器上的应用。我们的技术有望加速生物集成可穿戴电子产品的发展。
Electrically conductive hydrogels (ECHs) are attracting much interest in the field of biomaterials science because of their unique properties. However, effective incorporation and dispersion of conductive materials in the matrices of polymeric hydrogels for improved conductivity remains a great challenge. Here, we demonstrate highly transparent, electrically conductive, stretchable tough hydrogels modified by single-walled carbon nanotubes (SWCNTs). Two different approaches for the fabrication of SWCNT/hydrogel structures are examined: a simple SWCNT film transfer onto the as-prepared hydrogel and the film deposition onto the pre-stretched hydrogel. Functionality of our method is confirmed by scanning electron microscopy along with optical and electrical measurements of our structures while subjecting them to different strains. Since the hydrogel-based structures are intrinsically soft, stretchable, wet, and sticky, they conform well to a human skin. We demonstrate applications of our material as skin-like passive electrodes and active finger-mounted joint motion sensors. Our technique shows promise to accelerate the development of biointegrated wearable electronics.