An Octopus‐Inspired Stimulus‐Responsive Structural Color Hydrogel for Uterus Cervical Canal Stent DOI

Lihao Zhang,

Lehao Ren,

Yufei Chen

et al.

Advanced Healthcare Materials, Journal Year: 2024, Volume and Issue: 13(22)

Published: June 13, 2024

Abstract Soft‐bodied aquatic organisms have exhibited remarkable capabilities in navigating and moving within liquid environments serving as a profound inspiration for the development of bionic robots with intricate movements. Traditional rigid components are being replaced by stimulus‐responsive soft materials such hydrogels shape memory polymers, leading to creation dynamically responsive robots. In this study, robot inspired an octopus adsorptive properties its tentacles, specifically tailored targeted stimulation pH sensing cervix, presented. This approach involves design soft, water‐based Janus adhesive hydrogel patch that adheres specific parts cervix responds changes through external stimuli. The incorporates inverse opal microstructures mimicking legs octopus, facilitate efficient stable locomotion, unidirectional transport biofluids, pH‐responsive behavior. miniature showcases controlled adhesion precise fluid highlighting potential stimulus response uterine cervical tract. breakthrough opens new avenues medical applications expanding field soft‐bodied robotics.

Language: Английский

Morphological Engineering of Sensing Materials for Flexible Pressure Sensors and Artificial Intelligence Applications DOI Creative Commons

Zhengya Shi,

Lingxian Meng, Xinlei Shi

et al.

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 14(1)

Published: July 5, 2022

As an indispensable branch of wearable electronics, flexible pressure sensors are gaining tremendous attention due to their extensive applications in health monitoring, human –machine interaction, artificial intelligence, the internet things, and other fields. In recent years, highly have been developed using various materials/structures transduction mechanisms. Morphological engineering sensing materials at nanometer micrometer scales is crucial obtaining superior sensor performance. This review focuses on rapid development morphological technologies for sensors. We discuss different architectures designs achieve high performance, including sensitivity, broad working range, stable sensing, low hysteresis, transparency, directional or selective sensing. Additionally, general fabrication techniques summarized, self-assembly, patterning, auxiliary synthesis methods. Furthermore, we present emerging high-performing microengineered healthcare, smart homes, digital sports, security machine learning-enabled computational platform. Finally, potential challenges prospects future developments discussed comprehensively.

Language: Английский

Citations

179
Durable, breathable, sweat-resistant, and degradable flexible sensors for human motion detection DOI
Min Guan, Yang Liu, Hong Du

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 462, P. 142151 - 142151

Published: March 1, 2023

Language: Английский

Citations

72
Scalable functionalized liquid crystal elastomer fiber soft actuators with multi-stimulus responses and photoelectric conversion DOI

Dingsheng Wu,

Yanan Zhang, Hanrui Yang

et al.

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(7), P. 2587 - 2598

Published: Jan. 1, 2023

Liquid crystal elastomer (LCE) fibers exhibit large deformation and reversibility, making them an ideal candidate for soft actuators. It is still challenging to develop a scalable strategy endow fiber actuators with photoelectric functions achieve tailorable photo-electro-thermal responsiveness rapid actuation deformation. Herein, we fabricated multiresponsive actuator that consists of LCE long obtained by continuous dry spinning further coated it polydopamine (PDA)-modified MXene ink. The designed PDA@MXene-integrated used shape-deformable multi-trigger can be photo- electro-thermally actuated. proposed combines excellent photothermal long-term electrically conductive PDA@MXene shape-morphing fiber, enabling their robust mechanical flexibility, multiple fast responses (∼0.4 s), stable (∼60%). As proof-of-concept, present near-infrared light-driven artificial muscle lift 1000 times the weight intelligent circuit switch controllability (∼0.1 s). Importantly, adaptive smart window system integrates energy harvesting/conversion ingeniously constructed integration propellable curtain woven solar cells. This work provide insights into development advanced materials toward robotics, sustainable savings beyond.

Language: Английский

Citations

62
Pretension-Free and Self-Recoverable Coiled Artificial Muscle Fibers with Powerful Cyclic Work Capability DOI
Bo Cui, Ming Ren, Lizhong Dong

et al.

ACS Nano, Journal Year: 2023, Volume and Issue: 17(13), P. 12809 - 12819

Published: June 20, 2023

Similar to natural muscle fibers, coiled artificial fibers provide a straightforward contraction. However, unlike their recovery from the contracted state initial requires high stress, resulting in almost zero work during full actuation cycle. Herein, self-recoverable fiber was prepared by conformally coating an elastic carbon nanotube (CNT) with very thin liquid crystal elastomer (LCE) sheath. The as-obtained demonstrated excellent properties comprising 56.9% contractile stroke, 1522%/s contraction rate, 7.03 kW kg–1 power density, and 32,000 stable cycles. LCE chains were helically aligned nematic phase, phase change of caused Joule heating drove process. Moreover, LCE/CNT had well-separated, torsionally stable, structure, which permitted large strokes acted as template for external-stress-free recovery. Thus, use mimic muscles object dragging, multidirectional bending, quick striking demonstrated.

Language: Английский

Citations

50
Interfacial Click Chemistry Enabled Strong Adhesion toward Ultra‐Durable Crack‐Based Flexible Strain Sensors DOI
Xinlei Shi, Lin Zhu, Hui Yu

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(27)

Published: March 26, 2023

Abstract Flexible strain sensors, particularly crack‐based ones, have evoked great interests in recent years because of their excellent sensitivity and promising applications health monitoring human‐machine interactions. However, the poor durability originated from weak interfacial bonding between fragile conductive layer stretchable elastic substrate makes it difficult to meet needs practical use. Herein, a strategy enabled by click chemistry is proposed for effectively enhancing adhesion strength (τ), thereby improving flexible sensors. It found that strong can bear larger cyclic shear force, suppress crack propagation layer, prevent peeling off, thus stabilize path under specific during test, resulting durability. Moreover, device (number stable cycles, i.e., C n ) linearly depend on τ, based which “durability‐adhesion coefficient ( DA )” defined. So far known, this first report quantitatively establish relationship cycling providing new viewpoint future design devices with high reliability.

Language: Английский

Citations

45
Mechanically Tunable Circularly Polarized Luminescence of Liquid Crystal‐Templated Chiral Perovskite Quantum Dots DOI
Xuan Zhang, Lin Li, Yuanhao Chen

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(22)

Published: March 25, 2024

Abstract Endowing perovskite quantum dots (PQDs) with circularly polarized luminescence (CPL) offers great promise for innovative chiroptical applications, but the existing strategies are inefficient in acquiring stimuli‐responsive flexible chiral films large, tunable dissymmetry factor ( g lum ) and long‐term stability. Here, we report a strategy design synthesis of luminescent cholesteric liquid crystal elastomer (Lumin‐CLCE) mechanically CPL, which is enabled by crystal‐templated self‐assembly situ covalent cross‐linking judiciously designed photopolymerizable CsPbX 3 (X=Cl, Br, I) PQD nanomonomers into elastic polymer networks. The resulting Lumin‐CLCE showcase structural color natural light noticeable CPL maximum value up to 1.5 under UV light. manipulation intensity rotation direction achieved controlling self‐assembled helicoidal nanostructure handedness soft helices. A significant breakthrough lies achievement reversible, perovskite‐based switch activated biaxial stretching, enables flexible, dynamic anti‐counterfeiting labels capable decrypting preset information specific polarization states. This work can provide new insights development advanced materials their emerging applications encryption, 3D displays, beyond.

Language: Английский

Citations

35
Novel Biomimetic “Spider Web” Robust, Super‐Contractile Liquid Crystal Elastomer Active Yarn Soft Actuator DOI Creative Commons

Dingsheng Wu,

Xin Li, Yuxin Zhang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(17)

Published: Feb. 28, 2024

In nature, spider web is an interwoven network with high stability and elasticity from silk threads secreted by spider. Inspired the structure of webs, light-driven liquid crystal elastomer (LCE) active yarn designed super-contractile robust weavability. Herein, a novel biomimetic gold nanorods (AuNRs) @LCE soft actuator hierarchical fabricated facile electrospinning subsequent photocrosslinking strategies. Meanwhile, inherent mechanism actuation performances as-prepared interleaving are systematically analyzed. Results demonstrate that thanks to unique "like-spider webs" between fibers, molecular orientation within LCE microfibers good flexibility, they can generate super strain (≈81%) stable performances. Importantly, benefit covalent bonding at organic-inorganic interface, photopolymerizable AuNRs molecules uniformly introduced into polymer backbone electrospun achieve tailorable shape-morphing under different light intensity stimulation. As proof-of-concept illustration, artificial muscles, micro swimmers, hemostatic bandages successfully constructed. The research disclosed herein offer new insights continuous production development LCE-derived paramount significance for many applications smart fabrics flexible wearable devices.

Language: Английский

Citations

19
Photothermal regulated multi-perceptive poly(ionic liquids) hydrogel sensor for bioelectronics DOI
Xinyu Qu, Jingying Liu, Siying Wang

et al.

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 453, P. 139785 - 139785

Published: Oct. 15, 2022

Language: Английский

Citations

55
Multifunctional carbon nanotube hydrogels with on-demand removability for wearable electronics DOI
Xiaoya Ding, Yunru Yu, Wenzhao Li

et al.

Nano Today, Journal Year: 2023, Volume and Issue: 54, P. 102124 - 102124

Published: Dec. 29, 2023

Language: Английский

Citations

30
MXene Contact Engineering for Printed Electronics DOI Creative Commons

Zhiyun Wu,

Shuiren Liu,

Zijuan Hao

et al.

Advanced Science, Journal Year: 2023, Volume and Issue: 10(19)

Published: April 25, 2023

MXenes emerging as an amazing class of 2D layered materials, have drawn great attention in the past decade. Recent progress suggest that MXene-based materials been widely explored conductive electrodes for printed electronics, including electronic and optoelectronic devices, sensors, energy storage systems. Here, critical factors impacting device performance are comprehensively interpreted from viewpoint contact engineering, thereby giving a deep understanding surface microstructures, defects, level matching well their interaction principles. This review also summarizes existing challenges MXene inks related printing techniques, aiming at inspiring researchers to develop novel large-area high-resolution integration methods. Moreover, effectually tune states interface meet urgent demands significance engineering reducing levels, regulating is highlighted. Finally, electronics constructed by collaborative combination process discussed.

Language: Английский

Citations

28