With the widespread use of intelligent robots in warehousing and transportation, human healthcare, and home services, non-destructive and efficient robotic gripping is becoming increasingly important. However, current sensors used to feedback gripping behavior are greatly limited by high manufacturing costs, large size and mass, complex circuitry, and signal interference. In order to solve these problems, a lightweight distance sensor based on reduced graphene oxide (rGO)/MXene-rGO coaxial microfibers with interface buffers was prepared to help the non-destructive gripping of robot manipulators.

The prepared distance microsensor has a high sensitivity of 91.2 m–1, a fast response time of 116 ms, a high resolution of 5 μm, and good stability of 500 cycles in the range of 50–300 μm. In addition, high-performance and lightweight miniature sensors are mounted on the robot manipulator and reflect the gripping state by the displacement applied to the sensor. By establishing the correlation between the micro-sensing signal and the grasping state, the safe, non-destructive and effective grasping and release of the target can be realized.