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Dual-Modulus Microcone Array for Graded Tactile Sensing and Intelligent Slip Detection
Zhen Wei1, Chunjiang Zhao1,2, Yuehua Huang1
1College of Engineering and Technology, Southwest University, Chongqing 400715, China.
ACS Applied Materials & Interfaces
|June 30, 2026
Summary
This study introduces a novel dual-modulus microcone array for advanced tactile sensing and slip detection. This innovative sensor offers high sensitivity and durability for intelligent robotics and human-machine interfaces.
Area of Science:
- Materials Science
- Robotics
- Sensor Technology
Background:
- Conventional tactile sensors often lack the sensitivity and adaptability required for complex manipulation tasks.
- Achieving graded tactile sensing and reliable slip detection remains a challenge in soft robotics and wearable electronics.
Purpose of the Study:
- To develop a dual-modulus microcone array for enhanced tactile sensing and intelligent slip detection.
- To investigate the performance of asymmetric microstructures in graded tactile sensing.
- To integrate the sensor with a machine learning model for real-time adaptive control.
Main Methods:
- Fabrication of asymmetric polydimethylsiloxane/carbon nanotube (PDMS/CNT) microneedle arrays with distinct Young's moduli.
- Characterization of the sensor's mechanical response, sensitivity, response/recovery times, and durability.
- Implementation of a superhydrophobic surface for environmental stability.
- Integration with a one-dimensional convolutional neural network for slip detection and feedback control.
Main Results:
- The dual-modulus design exhibited a hierarchical mechanical response, achieving high sensitivity (9.55 kPa⁻¹) over a broad pressure range (0.1-450 kPa).
- The sensor demonstrated fast response/recovery (68/51 ms) and exceptional durability (>10,000 cycles).
- A superhydrophobic surface ensured stable operation in diverse environmental conditions (10-70°C, wet environments).
- The integrated system enabled real-time grip force regulation for delicate object manipulation, minimizing damage and contamination.
Conclusions:
- The developed dual-modulus microcone array offers a promising platform for advanced tactile sensing and intelligent slip detection.
- The combination of materials engineering and machine learning provides a robust solution for adaptive control in robotic systems.
- This technology has significant implications for the development of sophisticated soft robotics, wearable electronics, and intelligent human-machine interfaces.
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