The paper "Gecko-Inspired Controllable Adhesive: Structure, Fabrication, and Application" by Yanwei Liu et al. reviews the mechanisms, fabrication methods, and applications of gecko-inspired controllable adhesives. Geckos achieve flexible climbing on various surfaces through their unique foot adhesion system, which involves strong adhesion and easy detachment. The paper introduces the controllable adhesion mechanism of geckos, including the structure of their feet, the source of adhesion force, and the behavior of the adhesion system during attachment and detachment. It then describes the design methods, adhesion performance, and preparation techniques of gecko-inspired controllable adhesives, focusing on shear adhesion and active modulation strategies such as shape memory polymers (SMPs), magnetic microstructures, and controllable back layers. The applications of these adhesives in climbing robots and grippers are also discussed. Finally, the paper outlines future challenges and opportunities in the development of gecko-inspired controllable adhesives.The paper "Gecko-Inspired Controllable Adhesive: Structure, Fabrication, and Application" by Yanwei Liu et al. reviews the mechanisms, fabrication methods, and applications of gecko-inspired controllable adhesives. Geckos achieve flexible climbing on various surfaces through their unique foot adhesion system, which involves strong adhesion and easy detachment. The paper introduces the controllable adhesion mechanism of geckos, including the structure of their feet, the source of adhesion force, and the behavior of the adhesion system during attachment and detachment. It then describes the design methods, adhesion performance, and preparation techniques of gecko-inspired controllable adhesives, focusing on shear adhesion and active modulation strategies such as shape memory polymers (SMPs), magnetic microstructures, and controllable back layers. The applications of these adhesives in climbing robots and grippers are also discussed. Finally, the paper outlines future challenges and opportunities in the development of gecko-inspired controllable adhesives.