The development of fiber-shaped pressure sensors is on the rise due to their high flexibility, breathability and integrability for promising applications in human-activity monitoring and personal healthcare. Achieving simultaneous dynamic monitoring and real-time visualization in one fiber-shaped sensor is attractive but remains challenging. Here, we demonstrate a fiber-shaped light-emitting pressure sensor to simultaneously detect and visualize the force stimuli. This sensor is realized by the design of a coaxial structure composed of a micro-patterned polymer composite hollow fiber as the sheath and a fiber electrode as the core. The sheath embedded with electroluminescent phosphors serves as both pressure-sensing and light-emitting layers. The resulting fiber-shaped sensor not only presents a high capacitive sensitivity of 16.81 N⁻¹, but also allows people to visualize the real-time intensity and distribution of the force stimuli through electroluminescence. Impressively, our sensor still affords high flexibility and robustness even under recurring large deformations. As a demonstration, the fiber-shaped sensors have been woven into a smart textile and directly worn on human skin to monitor and display human activities like finger motion and facial expression. The textile-type visualizing–sensing platform proposed in this work may aid in pushing human-activity monitoring and personal healthcare a step forward.

中文翻译：

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用于可视化动态监控的纤维状发光压力传感器†

由于纤维状压力传感器的高灵活性，透气性和可集成性，其在人类活动监测和个人医疗保健中的应用前景广阔，因此发展迅速。在一个光纤传感器中实现同时动态监控和实时可视化虽然很有吸引力，但仍然具有挑战性。在这里，我们演示了一种纤维状的发光压力传感器，可以同时检测和可视化力的刺激。该传感器通过同轴结构的设计来实现，该同轴结构由微图案的聚合物复合中空纤维作为护套，纤维电极作为芯体。嵌入有电致发光磷光体的护套既用作压力感应层又用作发光层。最终的纤维状传感器不仅具有16.81 N的高电容灵敏度^-1，但也可以使人们通过电致发光可视化力刺激的实时强度和分布。令人印象深刻的是，即使在反复出现大变形的情况下，我们的传感器仍具有很高的灵活性和坚固性。作为演示，这些纤维状传感器被编织成一种智能纺织品，并直接戴在人体皮肤上，以监视和显示诸如手指运动和面部表情之类的人类活动。在这项工作中提出的纺织品类型的可视化传感平台可能有助于推动人类活动监测和个人保健向前迈进。