The exceptional electrical properties of graphene with high sensitivity to external stimuli make it an ideal candidate for advanced sensing technologies. Inkjet printing of graphene (iGr) can provide a versatile platform for multifunctional sensor manufacturing. Here the multifunctional sensor enabled by combining the design freedom of inkjet printing with the unique properties of graphene networks is reported on. A fully inkjet printed multimaterial device consists of two layers of iGr stripes separated by a dielectric polymeric layer of tripropylene glycol diacrylate (TPGDA). In these devices, the bottom iGr layer, capped with TPGDA, provides temperature sensing, the top uncapped iGr is sensitive to the external atmosphere, while the capacitance between the two iGr layers is sensitive to the applied pressure. The fast, sensitive, and reproducible performance of these sensors are demonstrated in response to environmental stimuli, such as pressure, temperature, humidity, and magnetic field. The devices are capable of simultaneous sensing of multiple factors and are successfully manufactured on a variety of substrates, including Si/SiO2, flexible Kapton films and textiles, demonstrating their potential impact in applications compatible with silicon technologies as well as wearable and healthcare devices.

中文翻译：

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用于柔性和可穿戴电子产品的喷墨打印多功能石墨烯传感器


石墨烯卓越的电特性对外部刺激高度敏感，使其成为先进传感技术的理想选择。石墨烯喷墨打印 （iGr） 可以为多功能传感器制造提供多功能平台。本文报道了通过将喷墨打印的设计自由度与石墨烯网络的独特特性相结合而实现的多功能传感器。全喷墨打印的多材料器件由两层 iGr 条纹组成，由三丙二醇二丙烯酸酯 （TPGDA） 的介电聚合物层隔开。在这些器件中，底部 iGr 层（覆盖有 TPGDA）提供温度感应，顶部无帽 iGr 对外部大气敏感，而两个 iGr 层之间的电容对施加的压力敏感。这些传感器的快速、灵敏和可重现的性能在响应环境刺激（如压力、温度、湿度和磁场）时得到了证明。这些器件能够同时感应多种因素，并成功在各种基板上制造，包括 Si/SiO2、柔性 Kapton 薄膜和纺织品，展示了它们在与硅技术兼容以及可穿戴和医疗保健设备应用中的潜在影响。