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>Sustainable production of highly conductive multilayer graphene ink for wireless connectivity and IoT applications
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Sustainable production of highly conductive multilayer graphene ink for wireless connectivity and IoT applications
Printed electronics offer a breakthrough in the penetration of information technology into everyday life. The possibility of printing electronic circuits will further promote the spread of the Internet of Things applications. Inks based on graphene have a chance to dominate this technology, as they potentially can be low cost and applied directly on materials like textile and paper. Here we report the environmentally sustainable route of production of graphene ink suitable for screen-printing technology. The use of non-toxic solvent Dihydrolevoglucosenone (Cyrene) significantly speeds up and reduces the cost of the liquid phase exfoliation of graphite. Printing with our ink results in very high conductivity (7.13 × 104 S m−1) devices, which allows us to produce wireless connectivity antenna operational from MHz to tens of GHz, which can be used for wireless data communication and energy harvesting, which brings us very close to the ubiquitous use of printed graphene technology for such applications.
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机译:印刷电子在信息技术渗透到日常生活中提供了突破。印刷电子电路的可能性将进一步促进物联网应用的普及。基于石墨烯的油墨有机会在这项技术中占主导地位,因为它们的成本可能很低,并且可以直接应用于纺织和造纸等材料。在这里,我们报告了适用于丝网印刷技术的石墨烯油墨的环境可持续生产路线。使用无毒溶剂二氢左旋葡萄糖苷(Cyrene)可以显着加快石墨的液相剥落速度并降低其成本。使用我们的墨水进行打印可产生非常高的电导率(7.13×10 4 sup> S m -1 sup>)设备,这使我们能够生产工作在MHz至数十GHz的无线连接天线,可用于无线数据通信和能量收集,这使我们非常接近在此类应用中普遍使用的印刷石墨烯技术。
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