MXene-Based Soft Humidity-Driven Actuator with High Sensitivity and Fast Response DOI
Jiaxin Wu, Wenfei Ai,

Yue Long

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(21), P. 27650 - 27656

Published: May 15, 2024

Soft actuators possessing notable mechanical deformations, high sensitivity, and fast response speed play a crucial role in various applications, such as artificial muscles, soft robots, intelligent devices. In this study, smart humidity-driven actuator was successfully fabricated by utilizing MXene/cellulose nanofiber (CNF)/LiCl (MCL) through vacuum-assisted filtration with sensitivity. Utilizing the excellent humidity responsiveness of MXene/CNF robust hygroscopicity LiCl, synergistic effect these materials enhances hygroscopic properties actuator. The MCL demonstrates actuation performance, deformation, reliable cyclic stability. To illustrate extensive potential actuator, range from bionic devices to grippers crawling actuators, are showcased. Remarkably, sustained motion without necessitating switch, relying on gradient water droplets, exhibits spontaneous directional motions within certain range, which makes it promising prospect field robotics.

Language: Английский

Adaptive liquid crystal polymers based on dynamic bonds: From fundamentals to functionalities DOI Creative Commons
Ruochen Lan, Xiang‐Guo Hu, Jingyu Chen

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 1, 2024

Abstract Liquid crystal polymers (LCPs) have gained tremendous attention in recent years due to their great potentials from fabrication of responsive actuators and sensors construction intelligent soft robotic light modulators. However, conventional LCPs with permanent cross‐links present tedious unmodifiable stimuli‐responsiveness. Recently, dynamic bonds capable reversibly break reform been integrated into LCP, imparting intrinsic characteristics. The LCP possesses unprecedented diverse functionalities including reprogrammability, recyclability, self‐healing ability, becoming much more adaptive surrounding environmental changes compared the counterpart. In this review, progress bond‐based is summarized. mechanism, preparation, based on noncovalent bond (DNCB) covalent (DCB) are poised be discussed, followed by introducing emergent combining both DNCB DCB. Consequently, unique will given. Finally, outlooks development presented.

Language: Английский

Citations

21
Strong, healable materials with bio‐like ordered architectures and versatile functionality DOI Creative Commons
Xinkai Li, Yuyan Wang,

Xinxing Zhang

et al.

SusMat, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 13, 2024

Abstract The capacity of biological tissues to undergo self‐healing is crucial for the performance functions and continuation life. Conventional intrinsic materials demonstrate analogous functionality depending on dissociation‐recombination reversible bonds with no need extra repair agents. However, trade‐off relationship between mechanical strength kinetics in systems, coupled lack additional functionality, restricts their service life practical applications. Diversified highly ordered structures organisms significantly affect energy dissipation mechanism, signal transmission efficiency, molecular network reconstruction capability due multi‐dimensional differentiated macroscopic composite constructions, microscopic orientation textures, topologies/bonding types at level. These architectures exhibit distinctive strengthening mechanisms functionalities, which provide valuable references. This review aims providing current status advanced biomimetic internal micro/nanostructures. Through highlighting specific examples, classifications, design inspirations, fabrication strategies these newly developed based integrating dynamic interactions nano/microstructures are outlined. Furthermore, balance mechanisms, structure–functionalization relationships, potential application values discussed. concludes a perspective challenges, opportunities, prospects development, application, promotion self‐healable bio‐like architectures.

Language: Английский

Citations

19
Bioinspired Mechanochromic Liquid Crystal Materials: from Fundamentals to Functionalities and Applications DOI
Xinyu Chen, Jingyu Chen,

Xinyue Song

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: May 23, 2024

Abstract Inspired by intriguing color changeable ability of natural animals, the design and fabrication artificial mechanochromic materials capable changing colors upon stretching or pressing have attracted intense scientific interest. Liquid crystal (LC) is a self‐organized soft matter with anisotropic molecular alignment. Due to sensitivity various external stimulations, LC has been considered as an emerging appealing responsive building block construct intelligent advanced devices. Recently, becoming hot topic in multifields from flexible skins visualized sensors smart biomimetic In this review, recent progress LCs comprehensively summarized. Firstly, mechanism functionalities introduced, followed preparation functional based on LCs. Then applications are provided. Finally, conclusion outlooks field given. This overview hoped provide inspiration for scientists engineers multidisciplines including science, elastomers, chemistry, physical science.

Language: Английский

Citations

17
Smart chiral liquid crystal elastomers: Design, properties and application DOI Creative Commons
Yuan Liu,

Jiazhe Ma,

Jiajia Yang

et al.

Smart Molecules, Journal Year: 2024, Volume and Issue: 2(1)

Published: Feb. 29, 2024

Abstract Smart chiral liquid crystal elastomers are a class of soft photonic crystals with periodic nanostructures. There two kinds structural colors: cholesteric one‐dimensional helical nanostructure and blue‐phase three‐dimensional nanostructure. The self‐assembled can be dynamically controlled under external stimulation, the reflected color adjusted throughout visible light range. Along development innovative material systems cutting‐edge manufacturing technologies, researchers have proposed diverse strategies to design synthesize thoroughly investigated their properties potential applications. Here, we provide systematic review progress in fabrication smart elastomers, focusing on via surface‐enforced alignment, bar coating, 3D printing, anisotropic deswelling methods as well self‐assembly without additional alignment. able respond quickly stimuli wide range applications areas such adaptive optics, color‐changing camouflage, robotics, information encryption. This concludes perspective opportunities challenges for future elastomers.

Language: Английский

Citations

15
Programmable and reconfigurable humidity-driven actuators made with MXene (Ti3C2Tx)-cellulose nanofiber composites for biomimetic applications DOI

Shaofeng Zeng,

Yuanji Ye,

Peidi Zhou

et al.

Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 6619 - 6629

Published: April 3, 2024

Language: Английский

Citations

14
Synergistic humidity-responsive mechanical motion and proton conductivity in a cationic covalent organic framework DOI

Gobinda Das,

Dhanraj B. Shinde,

Amrutha Melepurakkal

et al.

Chem, Journal Year: 2024, Volume and Issue: 10(8), P. 2500 - 2517

Published: May 22, 2024

Language: Английский

Citations

11
Unlocking the potential of liquid crystals as phase change materials for thermal energy storage DOI Open Access
Rahul Karyappa,

Jiayao Cheng,

Chanda Ho

et al.

Energy Materials, Journal Year: 2025, Volume and Issue: 5(4)

Published: Jan. 23, 2025

This review paper examines the innovative use of liquid crystals (LCs) as phase change materials in thermal energy storage systems. With rising demand for efficient storage, LCs offer unique opportunities owing to their tunable transitions, high latent heat, and favorable conductivity. covers various types LCs, such nematic, smectic, cholesteric phases, roles enhancing storage. It discusses mechanisms LC transitions impact on efficiency. Strategies improve conductivities polymers have also been explored. One method involves embedding units within molecular structure promote orderly arrangement, facilitate heat flow, reduce phonon scattering. Aligning polymer chains through external fields or mechanical processes significantly improves intrinsic The inclusion thermally conductive fillers optimization filler-matrix interactions further boost performance. Challenges related scalability, cost-effectiveness, long-term stability LC-based are addressed, along with future research directions. synthesizes current knowledge identifies gaps literature, providing a valuable resource researchers engineers develop advanced technologies, contributing sustainable solutions.

Language: Английский

Citations

1
Molecular hard-segment engineered polyurethane with thermochromism, shape memory, humidity-driven, and self-healing capabilities DOI
Naqi Li, Zhishuai Cui, Xiaolei Yue

et al.

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 404, P. 135266 - 135266

Published: Jan. 4, 2024

Language: Английский

Citations

7
Bionic Diffractive Meta‐Silk Patch for Visually Flexible Wearables DOI

Kaiyi Dong,

Wei Meng, Qian Zhou

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(5)

Published: Jan. 12, 2024

Abstract Rapid humidity response contributes tremendously to visually flexible wearables. However, sluggish response, infrequent reproducibility, and biotoxicity restrict the development of wearable devices. Here, inspired by changes in color Dynastes hercules , a wearable, rapid stretchable, rewritable meta‐silk fibroin diffractive film (mSFD) is presented. The generated spin‐coating silk protein polyurethane (PU) cross‐linking, followed hot pressing meta‐structures. Owing diffraction stable combination SF β ‐structure PU hydrogen bond, mSFDs exhibit excellent coloration, erasability. Notably, microcolumns microporous structures on meta‐membrane endow membrane with unparalleled features. Fast disappearance reappearance are observed under high conditions (response time <2 ms, cycle 1 s). In particular, responsiveness mSFP induces change membrane, which enables its application real‐time biomonitoring (wound management, mask regulation) anticounterfeiting (medicine storage, fingerprint recognition). These properties bioinspired mSFD P potential field robotic skin.

Language: Английский

Citations

7
Ionic Covalent Organic Framework as a Dual Functional Sensor for Temperature and Humidity DOI

Gobinda Das,

Fayrouz Abou Ibrahim,

Zahraa Abou Khalil

et al.

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: Feb. 23, 2024

Abstract Visual sensing of humidity and temperature by solids plays an important role in the everyday life industrial processes. Due to their hydrophobic nature, most covalent organic framework (COF) sensors often exhibit poor optical response when exposed moisture. To overcome this challenge, is set out improve, moisture incorporating H‐bonding ionic functionalities into COF network. A highly sensitive COF, consisting guanidinium diformylpyridine linkers (TG‐DFP), capable detecting changes content fabricated. The hydrophilic nature enables enhanced water uptake, allowing trapped molecules form a large number hydrogen bonds. Despite presence non‐emissive building blocks, H‐bonds restrict internal bond rotation within leading reversible fluorescence solid‐state hydrochromism relative temperature.

Language: Английский

Citations

7