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Related Concept Videos

Rab Cascades01:25

Rab Cascades

Rab GTPases act in a regulated cascade during membrane fusion, helping the lipid bilayers mix. The Rab family of proteins are active when bound to GTP, and inactive when bound to GDP. Hence, they act as guanine nucleotide-dependent molecular switches. Rab-GTP recognizes and binds to long or short-range tethering proteins to capture the target vesicle. These tethers coordinate with SNAREs on the vesicle and the target membrane to assemble the trans SNARE complex that locks the mixing bilayers.
Kinetic Friction01:26

Kinetic Friction

Consider a truck trying to pull a stationary car. As the truck exerts a force on the car, static friction is created at the point of contact between the two surfaces. This frictional force resists the car's movement and keeps it at rest. However, when the applied force by the truck surpasses the limiting static frictional force, an interesting phenomenon occurs. The frictional force at the interface reduces to a lower value, known as the kinetic frictional force. At this point, the car begins...
Torque Free Motion01:15

Torque Free Motion

The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
Mechanical Systems01:22

Mechanical Systems

Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
PD Controller: Design01:26

PD Controller: Design

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Hydraulic Jump: Problem Solving01:16

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Updated: Jun 25, 2026

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers
07:09

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers

Published on: August 17, 2018

Parthenocissus-inspired soft climbing robots.

Kecheng Qin1, Wei Tang1, Huaizhi Zong1

  • 1State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou 310058, China.

Science Advances
|March 26, 2025
PubMed
Summary
This summary is machine-generated.

Inspired by plant growth, this soft climbing robot uses a novel growing-climbing mechanism to adhere to complex surfaces. It mimics natural adhesion and contraction for versatile climbing, even on discontinuous structures.

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Last Updated: Jun 25, 2026

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Published on: August 17, 2018

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Area of Science:

  • Robotics
  • Bio-inspired Engineering
  • Materials Science

Background:

  • Climbing robots offer mobility on vertical and complex surfaces.
  • Existing robots struggle with discontinuous and varied structural surfaces.
  • Nature provides inspiration, such as the growing-climbing behavior of Parthenocissus.

Purpose of the Study:

  • To develop a novel growing-climbing mechanism for robots.
  • To create a soft climbing robot inspired by Parthenocissus.
  • To enhance robot adhesion and climbing capability on complex surfaces.

Main Methods:

  • A soft climbing robot was designed incorporating a growing-climbing mechanism.
  • Microstructured biofilms were grown to enhance adhesion, mimicking plant suckers.
  • Shape memory alloy contraction was used for robot bending and movement.
  • The robot demonstrated full contraction for non-damaging task completion.

Main Results:

  • The robot successfully climbed various complex surfaces, including discontinuous ones.
  • The bio-inspired growing-climbing mechanism proved effective.
  • The robot's adhesion and mobility were significantly enhanced by the biofilm growth.
  • The robot could retract fully after operation.

Conclusions:

  • The Parthenocissus-inspired growing-climbing mechanism is a viable paradigm for climbing robots.
  • This approach enables robots to navigate challenging, complex, and discontinuous surfaces.
  • The developed soft robot demonstrates a new direction for versatile climbing robot design.