3D multifunctional wearable piezoresistive sensors have aroused extensive attention in the fields of motion detection, human-computer interaction, electronic skin, etc. However, current research mainly focuses on improving the foundational performance of piezoresistive sensors, while many advanced demands are often ignored. Herein, a 3D piezoresistive sensor based on rGO@C-ZIF-67@PU is fabricated via high temperature carbonization and a solvothermal reduction method. The as-prepared sensor exhibits a high sensitivity of 245.4 kPa-1, a wide detection range (0-25 kPa), a fast response/recovery time (30 ms/50 ms), and excellent durability (over 5000 cycles). Apart from the outstanding sensing performance, this sensor also displays UV shielding properties and excellent antibacterial activity, providing a broader application prospect for this hybrid sensor. Besides, the optic nerve damage/loss can be compensated to some extent via combining this multifunctional 3D piezoresistive sensor with traditional guide sticks, thus assisting visually impaired people to integrate into social life and normal social interaction easily. Evidently, these outstanding features pave a promising avenue to overcome the limitation of the existing piezoresistive sensors and provide a general way to promote its broad commercial applications.
Keywords: UV shielding; ZIF-67; bacteriostatic; graphene; wearable sensor.