Core Insights - The article discusses a groundbreaking soft robotic crawler developed by a research team at the University of Southern Denmark, which utilizes the principles of Kirigami art for its design [1][3]. Design Innovation - The core innovation lies in integrating Kirigami metamaterials into the design of inflatable soft actuators, allowing for coordinated local deformation when inflated [5][7]. - At a pressure of 100 kPa, the actuator can achieve a uniform contraction of up to 32%, nearly double that of traditional inflatable structures without cuts [7][9]. Motion Mechanism - The research team analyzed the deformation mechanism through experiments and finite element simulations, revealing a nonlinear pressure-contraction relationship that allows for precise control [9]. - The actuator's surface features, resembling scales, create anisotropic friction properties essential for snake-like movement, with forward friction coefficients significantly lower than backward ones [9]. Modular Design - A dual-channel Kirigami actuator was developed, enabling complex motion control by independently inflating two parallel airways [11]. - By connecting multiple dual-channel modules, a three-module crawling robot was created, capable of various movement patterns such as linear crawling and serpentine motion [11][13]. Real-World Performance - The robot was tested in real-world scenarios, demonstrating remarkable adaptability across different terrains, including asphalt, narrow passages, and slopes [15][17]. - Friction tests showed that the inflatable Kirigami actuator exhibited directional friction anisotropy, ensuring effective forward movement during inflation cycles [15][16]. Future Potential - The design requires external air sources and control systems, but the compactness of the micro-pumps and low-power solenoids lays the groundwork for future autonomous designs [19]. - The research highlights the potential applications of this soft robotic technology in fields such as search and rescue, pipeline inspection, and environmental monitoring [16][19].