A Dexterous Detachable Crawling Robotic Hand

Why It Matters

By merging dexterous manipulation with autonomous locomotion in a single modular unit, the hand expands the operational envelope of robots, reducing the need for separate grippers and mobility platforms. This could accelerate deployment of versatile robots in manufacturing, logistics, and field exploration.

Key Takeaways

• Reversible fingers grasp objects from both sides.
• Detachable hand integrates manipulation and crawling locomotion.
• Enables beyond‑reach multi‑item retrieval while robot crawls.
• Supports one‑handed tool use in confined spaces.
• Offers modularity for industrial, service, and exploratory robots.

Pulse Analysis

The new reversible hand tackles a long‑standing trade‑off in robotics: achieving human‑like dexterity without sacrificing mobility. Traditional anthropomorphic grippers rely on a single thumb and fixed orientation, limiting their use in symmetric or confined environments. By engineering fingers that can be flipped and re‑attached, the researchers create a bidirectional grasping surface that maintains structural balance while preserving fine motor control. This design principle aligns with the broader shift toward modular robotics, where interchangeable components enable rapid reconfiguration for diverse tasks.

Beyond its mechanical novelty, the hand’s detachable nature bridges the gap between stationary manipulation and autonomous locomotion. In field trials, the robot crawled under obstacles, extended its hand to retrieve multiple items beyond its immediate reach, and then resumed crawling—all without external assistance. Such integrated capability reduces system complexity, as a single unit can replace both a dedicated gripper and a separate mobility platform. Industries like warehouse automation and hazardous material handling stand to benefit from robots that can navigate tight spaces while performing precise pick‑and‑place operations.

Looking ahead, the technology could catalyze new applications in service and exploratory robotics. For example, inspection robots in nuclear facilities could crawl along pipelines, use the hand to manipulate valves, and then continue moving without manual repositioning. Similarly, planetary rovers equipped with this modular hand could collect samples from uneven terrain while maintaining stability. The convergence of dexterity, modularity, and locomotion embodied in this design signals a step toward more adaptable, cost‑effective robotic systems that can tackle complex, real‑world challenges.

Original Description

The human hand is often viewed as the pinnacle of dexterity, and many robotic hands adopt anthropomorphic designs, while others pursue non-anthropomorphic forms for structural balance or task optimization. However, human-like asymmetry and reliance on a single thumb limit applications that require symmetry or modularity, and most designs still struggle to combine autonomous movement, multi-object grasping, and modularity in one platform. We present a reversible finger design that allows grasping from both sides, with finger placement optimized to distribute roles and satisfy grasping and crawling constraints. In this work, we show that a detachable, reversible hand reliably combines manipulation and locomotion, enabling beyond-reach multi-item retrieval during crawling, one-handed tool use, and seamless bridging of stationary manipulation with autonomous mobility for industrial, service, and exploratory robotics.

Link to the published article: https://doi.org/10.1038/s41467-025-67675-8