journal article·2026-02Open access

Stretchable Curvature Sensors for Motion Capture with Bending‐Stretching Coupling Deformation

Tairan Wang, Xinkai Xu, Shuang Li, Yuqun Lan, Kai Chen, Wei Li, Guangyuan Wang, Kuai Yu, Lijuan Sun, Yewang Su

Advanced Science· Volume 13· Issue 12

Abstract

Abstract Accurate curvature sensing is essential for robotic control, movement monitoring, and enhanced interactive experiences. Existing strategies rely either on stretchable strain sensors, which introduce non‐calibratable measurement errors due to unstable interfacial friction and slippage, or on non‐stretchable curvature sensors, which lack the stretchability required for wearable applications. Here, a stretchable curvature sensor is reported featuring a core component of a wave‐shaped symmetrical laminated structure. This structure achieves both stretchability and effective decoupling of bending from stretching, enabling accurate curvature measurement under frictional conditions. Slip‐simulation tests with smart gloves demonstrated a 93.6% reduction in measurement errors relative to conventional strain sensors. These results underscore the sensor's promise for applications in flexible wearable devices and soft robotics.
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Research context

OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Prosthetics and Rehabilitation Robotics · Dielectric materials and actuators

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 P. R. China

School of Engineering Science University of Chinese Academy of Sciences Beijing 100049 P. R. China

Institute of Biomechanics and Medical Engineering AML Department of Engineering Mechanics Tsinghua University Beijing 100084 P. R. China

State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan 430074 P. R. China

China Academy of Space Technology Haidian District Beijing 100080 P. R. China

Zhongke Technology Achievement Transfer and Transformation Center of Henan Province Changyuan County Henan 453000 P. R. China

Funding

National Natural Science Foundation of China

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