Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

15.6K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
15.6K
Kinetic Friction01:26

Kinetic Friction

914
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...
914
Power Expended by a Constant Force00:57

Power Expended by a Constant Force

7.5K
The relationship between work done and the time taken to do it can be explained using the concept of power. For example, several sprinters in a race may have the same velocity when they reach the finish line, therefore doing the same amount of work, but the winner does it in the least amount of time. Thus, power is defined as the rate of doing work. Since work can vary as a function of time, the average power is defined as the work done during a time interval, divided by the time interval.
7.5K
Magnetic Damping01:17

Magnetic Damping

437
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
437
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

343
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
343
Frictional Forces on Flat Belts01:28

Frictional Forces on Flat Belts

885
Flat belts are commonly used in various industrial applications for transmitting power from one pulley to another. When a flat belt is wrapped around a set of pulleys, it experiences different tensions at the driving pulley ends due to the friction between the belt and pulley surface. When the pulley moves in a counterclockwise direction, the tension T2 on the opposite side of the pulley where the belt is moving away from is higher than the tension T1 on the side where the belt is moving...
885

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Exploring the Mechanism of Tannic Acid Against <i>Pichia kudriavzevii</i> in the VK2/E6E7 Vaginal Epithelial Cell Line and Its Synergy with Azoles on Drug-Resistant <i>Candida</i> Species.

Pathogens (Basel, Switzerland)·2026
Same author

Spatial variation in AMF communities and soil properties correlates with leaf and root allelopathic potential in <i>Solidago canadensis</i> in six different locations.

Frontiers in plant science·2026
Same author

A Novel Hyphal Suspension Approach for MIC Testing of Mould Fungi.

Mycoses·2026
Same author

A New Medium that Promotes In Vitro Mass Sporulation of Microsporum canis.

Mycopathologia·2026
Same author

Unsupervised anomaly detection in brain MRI via disentangled anatomy learning.

Medical image analysis·2026
Same author

An Optimized Positive Staining Protocol Method for Clear Visualization of Extracellular Vesicles by TEM Using Uranyless and Lead Citrate.

Langmuir : the ACS journal of surfaces and colloids·2025
Same journal

Scaling Up Bone-Inspired Reinforcements: Tunable Structural Performance for Next-Generation Bioinspired Composite Laminates.

Bioinspiration & biomimetics·2026
Same journal

Length Control of Pneumatic Artificial Muscles Inspired by Intrafusal-Extrafusal Muscle Interactions.

Bioinspiration & biomimetics·2026
Same journal

A bio-inspired, soft-bodied jumper.

Bioinspiration & biomimetics·2026
Same journal

Structural and Functional Characteristics of the Exoskeletal Architecture of the Cuttlebone.

Bioinspiration & biomimetics·2026
Same journal

Design, Kinematic Modeling and Aerodynamic Performance Evaluation of a Beetle-Inspired Folding Wing with High Folding Ratio.

Bioinspiration & biomimetics·2026
Same journal

Proprioceptive Feedback Control Improves Peristaltic Turning in Confined Environments.

Bioinspiration & biomimetics·2026
See all related articles

Related Experiment Video

Updated: Jun 14, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.2K

Variable stiffness performance analysis of layer jamming actuator based on bionic adhesive flaps.

Liangzhi Ye1, Linsen Xu1,2,3, Zhihuan Wang1

  • 1College of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, People's Republic of China.

Bioinspiration & Biomimetics
|August 30, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces bionic adhesive flaps inspired by geckos to enhance soft actuators. These flaps significantly increase actuator stiffness and adhesive force, outperforming traditional materials.

Keywords:
bionic adhesive materiallayer jamming actuatorvariable stiffness

More Related Videos

Cardiac Muscle-cell Based Actuator and Self-stabilizing Biorobot - PART 1
11:22

Cardiac Muscle-cell Based Actuator and Self-stabilizing Biorobot - PART 1

Published on: July 11, 2017

8.1K
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

9.0K

Related Experiment Videos

Last Updated: Jun 14, 2025

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators
14:42

Fabrication of Carbon-Based Ionic Electromechanically Active Soft Actuators

Published on: April 25, 2020

8.2K
Cardiac Muscle-cell Based Actuator and Self-stabilizing Biorobot - PART 1
11:22

Cardiac Muscle-cell Based Actuator and Self-stabilizing Biorobot - PART 1

Published on: July 11, 2017

8.1K
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

9.0K

Area of Science:

  • Robotics
  • Materials Science
  • Biomimetics

Background:

  • Soft actuators lack the precise force output of rigid actuators.
  • Variable stiffness modules, like layer jamming, can improve soft actuator performance.
  • Gecko-inspired designs offer potential for enhanced adhesion and stiffness.

Purpose of the Study:

  • To develop and evaluate a novel layer jamming mechanism for soft actuators using bionic adhesive flaps.
  • To model and experimentally validate the stiffness and adhesive properties of the bionic actuator.
  • To compare the performance of the bionic actuator against traditional materials.

Main Methods:

  • Manufacturing of a layer jamming actuator with bionic adhesive flaps.
  • Development of equivalent stiffness models for unjammed and jammed states.
  • Calculation of micropillar shear adhesive force using the Kendall viscoelastic band model.
  • Finite element simulation to analyze interlaminar shear stress and stiffness.
  • Experimental measurement of shear adhesive force and variable stiffness performance.

Main Results:

  • Bionic adhesive flaps demonstrated 3.2 times higher critical shear adhesive force than PET.
  • Anisotropic adhesion behavior was observed in the bionic material.
  • Finite element simulations showed increased stiffness with applied pressure.
  • The bionic actuator achieved a maximum stiffness of 8.027 N mm⁻¹, 1.5 times higher than PET-based actuators.

Conclusions:

  • Bionic adhesive flaps significantly enhance the stiffness and adhesive capabilities of layer jamming soft actuators.
  • The gecko-inspired design offers a superior alternative to conventional materials for variable stiffness applications.
  • Simulation and experimental results validate the effectiveness of bionic flaps in improving soft actuator performance.