Hong Yaoye, Zhao Yao, Berman Joseph, Chi Yinding, Li Yanbin, Huang He Helen, Yin Jie
Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, 27695, USA.
Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC, 27695, USA.
Nat Commun. 2023 Aug 2;14(1):4625. doi: 10.1038/s41467-023-39741-6.
Achieving multicapability in a single soft gripper for handling ultrasoft, ultrathin, and ultraheavy objects is challenging due to the tradeoff between compliance, strength, and precision. Here, combining experiments, theory, and simulation, we report utilizing angle-programmed tendril-like grasping trajectories for an ultragentle yet ultrastrong and ultraprecise gripper. The single gripper can delicately grasp fragile liquids with minimal contact pressure (0.05 kPa), lift objects 16,000 times its own weight, and precisely grasp ultrathin, flexible objects like 4-μm-thick sheets and 2-μm-diameter microfibers on flat surfaces, all with a high success rate. Its scalable and material-independent design allows for biodegradable noninvasive grippers made from natural leaves. Explicitly controlled trajectories facilitate its integration with robotic arms and prostheses for challenging tasks, including picking grapes, opening zippers, folding clothes, and turning pages. This work showcases soft grippers excelling in extreme scenarios with potential applications in agriculture, food processing, prosthesis, biomedicine, minimally invasive surgeries, and deep-sea exploration.
由于柔顺性、强度和精度之间的权衡,在单个软夹爪中实现处理超软、超薄和超重物体的多种能力具有挑战性。在此,我们结合实验、理论和模拟,报告了一种用于超轻柔、超坚固且超精确夹爪的角度编程的卷须状抓取轨迹。这种单个夹爪能够以最小的接触压力(0.05千帕)轻柔地抓取易碎液体,举起重量为自身16000倍的物体,并在平面上精确抓取超薄、柔性物体,如4微米厚的薄片和2微米直径的微纤维,且成功率很高。其可扩展且与材料无关的设计允许用天然树叶制成可生物降解的无创夹爪。明确控制的轨迹便于其与机器人手臂和假肢集成以执行具有挑战性的任务,包括采摘葡萄、打开拉链、折叠衣服和翻页。这项工作展示了在极端场景中表现出色的软夹爪,在农业、食品加工、假肢、生物医学、微创手术和深海探索等领域具有潜在应用。