Coaxial Graphene/MXene Microfibers with Interfacial Buffer-Based Lightweight Distance Sensors Assisting Lossless Grasping of Fragile and Deformable Objects

Abstract

Lossless and efficient robotic grasping is becoming increasingly important with the widespread application of intelligent robotics in warehouse transportation, human healthcare, and domestic services. However, current sensors for feedback of grasping behavior are greatly restricted by high manufacturing cost, large volume and mass, complex circuit, and signal crosstalk. To solve these problems, here, we prepare lightweight distance sensor-based reduced graphene oxide (rGO)/ MXene−rGO coaxial microfibers with interface buffer to assist lossless grasping of a robotic manipulator. The as-fabricated distance microsensor exhibits a high sensitivity of 91.2 m −1 in the distance range of 50−300 μm, a fast response time of 116 ms, a high resolution of 5 μm, and good stability in 500 cycles. Furthermore, the highperformance and lightweight microsensor is installed on the robotic manipulator to reflect the grasp state by the displacement imposed on the sensor. By establishing the correlation between the microsensing signal and the grasp state, the safe, non-destructive, and effective grasp and release of the target can be achieved. The lightweight and highpowered distance sensor displays great application prospects in intelligent fetching, medical surgery, multi-spindle automatic machines, and cultural relics excavation.

Recent Advances in Tactile Sensory Systems: Mechanisms, Fabrication, and Applications

“…In order to reach this target, many researchers are devoted to reducing the power consumption of neuromorphic tactile sensors from the aspect of materials and structures. Currently, 2D materials such as graphene [ 178 , 179 , 180 , 181 , 182 ], transition-metal dichalcogenides [ 183 , 184 , 185 , 186 , 187 , 188 ], and black phosphorus [ 189 , 190 , 191 , 192 ], are emerging as platforms to be constructed into tactile and synaptic sensors with low power consumption, low working voltage, and high flexibility. In addition, special structures can help improve sensing performance.…”

Electromagnetic Flowmeter for Rapid Metering of Microfluidics Based on an Ag/AgCl/Porous Graphite Electrode Sensor

“…For example, Wang and his team examined the sintering preparation technology and electrical property of Ag/AgCl all-solid-state marine electrodes . In recent years, several novel methods have been developed to prepare Ag/AgCl mixtures or electrodes. , Shen et al report that spherical and sheetlike Ag/AgCl nanostructures could be controllably synthesized by means of chemical reactions between AgNO 3 and a cetyltrimethylammonium chloride (CTAC) surfactant. Nevertheless, the area of the electrochemical reaction of all-solid-state Ag/AgCl prepared by such methods is often quite small and easily affected by external disturbances.…”