Bio-inspired switchable soft adhesion for the boost of adhesive surfaces and robotics applications: A brief review

Duan, Weiwang; Yu, Zhilin; Cui, Wenhui; Zhang, Zengxin; Zhang, Wenling; Tian, Yu

doi:10.1016/j.cis.2023.102862

Cited by 15 publications

(7 citation statements)

References 145 publications

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“…Using wet adhesion mimicking the adhesion mechanism of tree-frog toe pads [19,21] could be applicable to solve this problem. This principle is appropriate to design a soft robotic hand for autonomously picking up wet deformable objects without requiring high squeeze force.…”

Section: Previous Work On Tree-frog Inspired Applicationsmentioning

confidence: 99%

Picking food by robot hand with tree-frog like pad in various wet conditions

Nguyen

2024

Eng. Res. Express

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Achieving stability with less squeeze in picking up wet-soft objects is still challenging for robots. To accomplish this challenge, preventing slippage between robotic grippers and an object is crucial. We used micropatterned pads on robotic grippers to enhance wet adhesion when picking up food items. This paper examines the role of micropattern interfaces in preventing slippage by experimental evaluations, in which soft robotic grippers picked up and released food samples such as tofu, quail egg, coffee jelly, konjac, and jelly under various wet conditions. A micropatterned pad, inspired by the toe pad of a tree-frog, comprises a large number of squared cells that are separated by channels. Normal pads without any micropattern were also made for comparison. Experimental results showed the micropatterned pad required less squeeze force than that of the normal pads, resulting in less deformation of a grasped object such as a piece of tofu. The potential of the micropatterned pad to prevent slippage between a robotic gripper and a fragile deformable object in various wet conditions without a complicated control method was demonstrated, thereby promising wider robotic applications in the food, service, and medical industries.

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Section: Previous Work On Tree-frog Inspired Applicationsmentioning

confidence: 99%

Picking food by robot hand with tree-frog like pad in various wet conditions

Nguyen

2024

Eng. Res. Express

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“…Bioinspired suction cups have a wide range of applications, including biomedical uses, smart adhesion methods [ 67 ], soft grippers, and intelligent grasping. Chen et al [ 63 ] demonstrated that a nanosucker array can maintain adhesion on a porcine heart, aiding in wound-healing.…”

Section: The Suction Cup Surfacementioning

confidence: 99%

Biomimetic Structure and Surface for Grasping Tasks

Li,

Yin,

Tian

2024

Biomimetics

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Under water, on land, or in the air, creatures use a variety of grasping methods to hunt, avoid predators, or carry food. Numerous studies have been conducted to construct a bionic surface for grasping tasks. This paper reviews the typical biomimetic structures and surfaces (wedge-shaped surface, suction cup surface and thorn claw surface) for grasping scenarios. Initially, progress in gecko-inspired wedge-shaped adhesive surfaces is reviewed, encompassing the underlying mechanisms that involve tuning the contact area and peeling behavior. The applications of grippers utilizing this adhesive technology are also discussed. Subsequently, the suction force mechanisms and applications of surfaces inspired by octopus and remora suction cups are outlined. Moreover, this paper introduces the applications of robots incorporating the principles of beetle-inspired and bird-inspired thorn claw structures. Lastly, inspired by remoras’ adhesive discs, a composite biomimetic adhesive surface is proposed. It integrates features from wedge-shaped, suction cup, and claw thorn surfaces, potentially surpassing the adaptability of basic bioinspired surfaces. This surface construction method offers a potential avenue to enhance adhesion capabilities with superior adaptability to surface roughness and curvature.

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“…4 Inspired by these organic species, researchers have made significant efforts to devise smart soft robots with various functionalities, in which bionic adhesion actuators have attracted the attention of researchers. 5 Compared to conventional rigid robots, soft robots possess structural deformability, environmental adaptability, and a high degree of freedom for actuation. 6 In this context, a flexible adhesion actuator is able to rely on its own adhesion force to accomplish grasping and transferring objects with different weights, showing great advantages and potential in the development of soft robots, industrial equipment, and other applications.…”

Section: Introductionmentioning

confidence: 99%

“…The octopus sucker can adhere to the prey weighing over their own weight to achieve capture and release . Inspired by these organic species, researchers have made significant efforts to devise smart soft robots with various functionalities, in which bionic adhesion actuators have attracted the attention of researchers . Compared to conventional rigid robots, soft robots possess structural deformability, environmental adaptability, and a high degree of freedom for actuation .…”

Section: Introductionmentioning

confidence: 99%

Polydopamine-Modified MXene-Integrated Poly(N-isopropylacrylamide) to Construct Ultrafast Photoresponsive Bilayer Hydrogel Actuators with Smart Adhesion

Wang,

Xue,

et al. 2023

ACS Appl. Mater. Interfaces

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In nature, living organisms, such as octopuses, cabrito, and frogs, have already evolved admirable adhesive abilities for better movement and predation in response to the surroundings. Inspired by biological structures, researchers have made enormous efforts in developing actuators that can respond to external stimuli, while such adhesive property is very desired, yet there is still limited research in responsive hydrogel actuators. Here, a bilayer actuator with high stretchability and robust interface bonding is presented, which has a smart adhesion and thermoreception function. The system consists of an adhesive passive layer copolymerized of amphoteric ([2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl), SBMA) and acrylic acid (AA), and an active layer hydrogel composed of poly(N-isopropylacrylamide) (PNIPAm) containing polydopamine-modified MXene (P-MXene) and calcium chloride (CaCl2). The coordination of carboxylate and Ca2+ at the interface of the two layers enhances the interfacial bonding from 14 to 30 N m–1, which facilitates withstanding large strain and preventing stratification. The resulting hydrogel actuator can bend approximately 360° in a mere 10 s, exhibiting excellent photothermal effect, a large angle bending deformation, and ultrafast photoresponsive ability. As a proof of concept, the photothermal actuators are programmed to present various shapes and grab objects. Importantly, the hydrogel actuator exhibits remarkable adhesion capabilities toward diverse substrates, with a maximum peel force of up to 280 N m–1. Relying on their own adhesion and the photoresponse properties, these flexible adhesion actuators show outstanding gripping capability, enabling them to grip and release objects of different shapes and weights. More interestingly, the hydrogel exhibits a smart adjustable adhesion capability at different temperatures, which enables it as a gripper to recognize temperature signals through real-time different feedback actions based on its own adhesion. This study presents innovative insights into biomimetic hydrogel actuators, providing new opportunities for developing intelligent soft robots with multiple functions.

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Bio-inspired switchable soft adhesion for the boost of adhesive surfaces and robotics applications: A brief review

Cited by 15 publications

References 145 publications

Picking food by robot hand with tree-frog like pad in various wet conditions

Picking food by robot hand with tree-frog like pad in various wet conditions

Biomimetic Structure and Surface for Grasping Tasks

Polydopamine-Modified MXene-Integrated Poly(N-isopropylacrylamide) to Construct Ultrafast Photoresponsive Bilayer Hydrogel Actuators with Smart Adhesion

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