LAUSR

As a wearable device, it should integrate highly sensitive and stretchable strain sensors to monitor various daily actions, which include large-scale and small-scale strain such as jumping, running, heartbeat and pulse. At present, the method of preparing strain sensors is mainly to impregnate or load materials like graphene, carbon nanotube and their union products on elastic substrates to obtain highly sensitive characteristics. Both well-known carbon-based and other single-dimensional nanomaterials do not have high flexibility and conductivity, which limits the improvement of sensitivity. However, a novel material MXene Ti3C2Tx has a two-dimensional sheet structure, which allows for higher electron and ion transmission rates. In addition, it is easier to be combined with other nanomaterials as a nano-substrate, greatly improving malleability. Hence, we creatively prepared 0D-1D-2D multi-dimensional nanomaterials, which designed 0D AgNPs loaded on 2D MXene nanosheets and compounded with 1D AgNWs. The method improves the elasticity and conductivity of traditional single-dimensional materials. Wherein, AgNPs built a bridge between AgNWs and MXene, which ensures continuity and high gauge factor even at large strain (200%) of yarn. The composite yarn strain sensor has remarkable high strain and sensitivity, effectively monitoring the large and small deformation of various parts of the human body, whose fabric can be as an electrothermal device. It has vital inspiration for the development of intelligent textiles, which would be used in medical devices, artificial skin, and other wearable fields.