Graphene Electronic Tattoo Sensors
Graphene Electronic Tattoo Sensors
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DOI：
10.1021/acsnano.7b02182
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发表时间：
2017-08-01
期刊：
影响因子：
17.1
通讯作者：
Lu, Nanshu
中科院分区：
文献类型：
--
作者：
Ameri, Shideh Kabiri;Ho, Rebecca;Lu, Nanshu
纹身般的表皮传感器是一种新兴的真正可穿戴电子产品，由于它们的薄和软。虽然它们中的大多数是基于薄金属膜，硅膜或基于纳米颗粒的可印刷油墨，但我们报告了由石墨烯制成的亚微米厚的多模态电子纹身传感器。石墨烯电子纹身（GET）被设计为非导电的蛇形物，并通过具有成本和时间效益的“湿转移，干图案化”方法制造。它的总厚度为463 +/- 30 nm，光学透明度接近85%，拉伸性超过40%。GET可以像临时纹身一样直接层压在人体皮肤上，并且仅通过货车德瓦尔斯力就可以完全符合皮肤表面的微观形态。GET的开放式网眼结构使其透气性和刚度可以忽略不计。裸露的GET能够保持附着在皮肤上数小时而不断裂或分层。使用液体绷带覆盖，GET可以在皮肤上保持功能长达数天。作为干电极，GET皮肤界面阻抗与医用银/氯化银（Ag/AgCl）凝胶电极相当，同时提供上级舒适性、移动性和可靠性。GET已成功应用于测量心电图（ECG）、肌电图（EMG）、脑电图（EEG）、皮肤温度和皮肤含水量。
Tattoo-like epidermal sensors are an emerging class of truly wearable electronics, owing to their thinness and softness. While most of them are based on thin metal films, a silicon membrane, or nanoparticle-based printable inks, we report sub micrometer thick, multimodal electronic tattoo sensors that are made of graphene. The graphene electronic tattoo (GET) is designed as filamentary serpentines and fabricated by a cost- and time-effective "wet transfer, dry patterning" method. It has a total thickness of 463 +/- 30 nm, an optical transparency of similar to 85%, and a stretchability of more than 40%. The GET can be directly laminated on human skin just like a temporary tattoo and can fully conform to the microscopic morphology of the surface of skin via just van der Waals forces. The open-mesh structure the GET makes it breathable and its stiffness negligible. A bare GET is able to stay attached to skin for several hours without fracture or delamination. With liquid bandage coverage, a GET may stay functional on the skin for up to several days. As a dry electrode, GET skin interface impedance is on par with medically used silver/silver-chloride (Ag/AgCl) gel electrodes, while offering superior comfort, mobility, and reliability. GET has been successfully applied to measure electrocardiogram (ECG), electromyogram (EMG), electroencephalogram (EEG), skin temperature, and skin hydration.