Triple-Bioinspired Shape Memory Microcavities with Strong and Switchable Adhesion

Li, Yufen; Liu, Xiaofeng; Wang, Ruijie; Jiao, Shouzheng; Liu, Yuyan; Lai, Hua; Cheng, Zhongjun

doi:10.1021/acsnano.3c06651

Cited by 6 publications

(3 citation statements)

References 54 publications

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“…Inspired by biological prototypes such as geckos, tree frogs, and octopuses, biomimetic array structures with good adhesion performance have emerged. [280][281][282] For instance, Jeong et al prepared skin patches by combining cantilever micro pillar structures, microgrids, and CNTs, which exhibited excellent dry adhesion (>200 kPa) and wet adhesion (>150 kPa) properties. [283]…”

Section: Adhesionmentioning

confidence: 99%

Electronic Skin for Health Monitoring Systems: Properties, Functions, and Applications

Yang,

Chen,

Fan

et al. 2024

Advanced Materials

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Electronic skin (e‐skin), a skin‐like wearable electronic device, holds great promise in the fields of telemedicine and personalized healthcare because of its good flexibility, biocompatibility, skin conformability, and sensing performance. E‐skin can monitor various health indicators of the human body in real time and over the long term, including physical indicators (exercise, respiration, blood pressure, etc.) and chemical indicators (saliva, sweat, urine, etc.). In recent years, the development of various materials, analysis, and manufacturing technologies has promoted significant development of e‐skin, laying the foundation for the application of next‐generation wearable medical technologies and devices. Herein, we discuss the properties required for e‐skin health monitoring devices to achieve long‐term and precise monitoring and summarize several detectable indicators in the health monitoring field. Subsequently, the applications of integrated e‐skin health monitoring systems are reviewed. Finally, current challenges and future development directions in this field are discussed. This review is expected to generate great interest and inspiration for the development and improvement of e‐skin and health monitoring systems.This article is protected by copyright. All rights reserved

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Section: Adhesionmentioning

confidence: 99%

Electronic Skin for Health Monitoring Systems: Properties, Functions, and Applications

Yang,

Chen,

Fan

et al. 2024

Advanced Materials

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“…Intelligent responsive materials, especially for the regulation of surface adhesion, have been widely used in aerospace, medical equipment, military defense, and other fields. − In nature, to cope with natural enemies and adapt to the environment, many organisms have achieved controllable adhesion ability after billions of years of evolution. − For example, the specially arranged anisotropic structure on the wings of a morpho butterfly leads to asymmetric viscous properties that guide the directional movement of a water droplet on the surface of the wings . Octopus tentacles possess an impressive array of suckers that exhibit excellent adhesive capabilities; these specialized structures are essential for capturing prey and facilitating movement in the aquatic environment …”

mentioning

confidence: 99%

Self-Repairing Humidity-Adjustable Anisotropic Adhesion Switch for Smart Manipulation

Zhang,

et al. 2024

ACS Nano

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Stimuli-responsive surface adhesion regulation is widely used in automated assembly systems, intelligent pick-up and placement systems, and soft crawling robots. However, in the actual separation process, it tends to produce separation residue or excessive adhesion. Therefore, how to regulate surface adhesion on demand is a significant challenge. Herein, inspired by the anisotropic adhesion behavior of butterflies and the controlled adhesion behavior of octopuses, based on molecular conformational rearrangement and anisotropic structures, a humidity-responsive PES−PI/PDMS composite surface is achieved to meet the needs of controllable adhesion orientation and strength, which could be used for an intelligent transfer system (grasping and releasing and anisotropic transporting). Humidity can effectively tune the hydrogen bonding and the interaction between polymers, resulting in excellent self-healing and durability properties of the composite surface. Moreover, humidity could adjust the surface transmittance as well, making it possible to be used in humidity sensing and in a detection and encryption/decryption system to enhance environmental monitoring and information protection capabilities. This work not only establishes a method for the fabrication of innovative "high-flexibility" adhesive materials but also provides approaches for the design and development of intelligent response devices.

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“…Among these organisms, the octopus’ sucker stands out as an exceptional actuator that provides high suction adhesion to various substrates by reducing the internal pressure below the surrounding pressure. Consequently, many researchers have investigated to develop smart adhesive systems through the rational design of geometric structures, drawing inspiration from the dynamic adhesive property of octopus’ sucker. − These smart adhesives can actively switch their adhesion status between a strong adhesive state (on-state) and a weak adhesive state (off-state) in response to external stimuli, such as pressure, ,, temperature, ,, light, , and magnetic stimuli.…”

mentioning

confidence: 99%

Plasmonic Hydrogel Actuators for Octopus-Inspired Photo/Thermoresponsive Smart Adhesive Patch

Kim,

Yeom,

et al. 2024

ACS Nano

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Octopuses are notable creatures that can dynamically adhere to a variety of substrates owing to the efficient pressure control within their suction cups. An octopus' suckers are sealed at the rim and function by reducing the pressure inside the cavity, thereby creating a pressure difference between the ambient environment and the inner cavity. Inspired by this mechanism, we developed a plasmonic smart adhesive patch (Plasmonic AdPatch) with switchable adhesion in response to both temperature changes and near-infrared (NIR) light. The AdPatch incorporates an elastic, nanohole-patterned elastomer that mimics the structure of octopus suckers. Additionally, a monolayer of gold nanostars (GNSs) is coated on the patch, facilitating a NIR light-responsive photothermal effect. A musclelike, thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) hydrogel functions as a volumetric actuator to regulate cavity pressure. When exposed to heat or light, the PNIPAM hydrogel shrinks, enabling the AdPatch to achieve strong suction adhesion (134 kPa at 45 °C, 71 kPa at 85 mW cm −2 ). Owing to its capability to achieve light-triggered remote adhesion without the need for external pressure, the Plasmonic AdPatch can be employed to transfer ultrathin films and biosensors to fragile organs without causing damage.

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Triple-Bioinspired Shape Memory Microcavities with Strong and Switchable Adhesion

Cited by 6 publications

References 54 publications

Electronic Skin for Health Monitoring Systems: Properties, Functions, and Applications

Electronic Skin for Health Monitoring Systems: Properties, Functions, and Applications

Self-Repairing Humidity-Adjustable Anisotropic Adhesion Switch for Smart Manipulation

Plasmonic Hydrogel Actuators for Octopus-Inspired Photo/Thermoresponsive Smart Adhesive Patch

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