Two-dimensional nanomaterials: A critical review of recent progress, properties, applications, and future directions

Composites Part A Applied Science and Manufacturing, Journal Year: 2022, Volume and Issue: 165, P. 107362 - 107362

Published: Dec. 9, 2022

Language: Английский

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Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

Light Science & Applications, Journal Year: 2022, Volume and Issue: 11(1)

Published: July 14, 2022

Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, strong circularly polarized luminescence. Herein, we provide a comprehensive overview state-of-the-art advances liquid crystal-templated chiral nanomaterials. The chiroptical properties touched, design principles bottom-up synthesis strategies discussed. Different functional based on liquid-crystalline soft templates, including plasmonic luminescent nanomaterials, systematically introduced, underlying mechanisms, properties, potential emphasized. This review concludes perspective emerging applications, challenges, future opportunities fascinating can not only deepen our understanding fundamentals soft-matter chirality, but also shine light development advanced toward versatile optics, biology, catalysis, electronics, beyond.

Language: Английский

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Wearable Janus‐Type Film with Integrated All‐Season Active/Passive Thermal Management, Thermal Camouflage, and Ultra‐High Electromagnetic Shielding Efficiency Tunable by Origami Process

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 8, 2023

Abstract Multifunctional films with integrated temperature adjustment, electromagnetic interference (EMI) shielding, and thermal camouflage are remarkably desirable for wearable products. Herein, a novel Janus‐type multifunctional ultra‐flexible film is fabricated via continuous electrospinning followed by spraying. Interestingly, in the polyvinyl alcohol (PVA)/phase change capsules (PCC) layer (P 1 ), PCC strung on PVA fibers to form stable “candied haws stick” structure that obviates slipping or falling off. The sufficient melting enthalpy (141.4 J g −1 ) guarantees its thermoregulation capability. Simultaneously, high mid‐IR emissivity (90.15%) endows radiative cooling properties (reducing 10.13 °C). Mechanical strength significantly improved superimposing polylactic acid (PLA) 2 surface. By spraying thin MXene PLA surface of P film, obtained (MXene/P MP endowed satisfactory low‐voltage heating, photo‐thermal superior performance, achieving all‐season comfort. Impressively, flexible achieves enhanced EMI shielding effect from 50.3 87.8 dB through simple origami process, which simplifies manufacturing process high‐performance materials. In brief, an attractive candidate future products personalized management anti‐electromagnetic radiation.

Language: Английский

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Highly Conductive MXene/PEDOT:PSS‐Integrated Poly(N‐Isopropylacrylamide) Hydrogels for Bioinspired Somatosensory Soft Actuators

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)

Published: March 10, 2023

Abstract Sophisticated sensing and actuation capabilities of many living organisms in nature have inspired scientists to develop biomimetic somatosensory soft robots. Herein, the design fabrication homogeneous highly conductive hydrogels for bioinspired actuators are reported. The synthesized by situ copolymerization surface‐functionalized MXene/Poly(3,4‐ethylenedioxythiophene)/poly(styrenesulfonate) ink with thermoresponsive poly( N ‐isopropylacrylamide) hydrogels. resulting found exhibit high conductivity (11.76 S m −1 ), strain sensitivity (GF 9.93), broad working range (≈560% strain), stability after over 300 loading–unloading cycles at 100% strain. Importantly, shape‐programmable hydrogel rapid response, light‐driven remote control, self‐sensing capability developed chemically integrating a structurally colored polymer. As proof‐of‐concept illustration, applied devising programmable shape‐morphing an artificial octopus, fish, gripper that can simultaneously monitor their own motions via real‐time resistance variation. This work is expected offer new insights into advanced materials capabilities, pave avenue development soft‐matter‐based self‐regulatory intelligence built‐in feedback control paramount significance intelligent robotics automated machines.

Language: Английский

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Bioinspired MXene-Based Soft Actuators Exhibiting Angle-Independent Structural Color

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 15(1)

Published: Nov. 28, 2022

Abstract In nature, many living organisms exhibiting unique structural coloration and soft-bodied actuation have inspired scientists to develop advanced colored soft actuators toward biomimetic robots. However, it is challenging simultaneously biomimic the angle-independent color shape-morphing capabilities found in plum-throated cotinga flying bird. Herein, we report MXene-based with that are fabricated through controlled self-assembly of colloidal SiO 2 nanoparticles onto highly aligned MXene films followed by vacuum-assisted infiltration polyvinylidene fluoride into interstices. The resulting exhibit brilliant, color, as well ultrafast recovery speeds (a maximum curvature 0.52 mm −1 can be achieved within 1.16 s, a time ~ 0.24 s) response acetone vapor. As proof-of-concept illustrations, applied demonstrate blue gripper-like bird’s claw capture target, artificial green tendrils twine around tree branches, an multicolored butterfly flutter its wings upon cyclic exposure strategy expected offer new insights development multifunctional for somatosensory robotics next-generation intelligent machines.

Language: Английский

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Three‐Dimensional Electrochromic Soft Photonic Crystals Based on MXene‐Integrated Blue Phase Liquid Crystals for Bioinspired Visible and Infrared Camouflage

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(42)

Published: Sept. 2, 2022

Developing bioinspired camouflage materials that can adaptively change color in the visible and infrared (IR) regions is an intriguing but challenging task. Herein, we report emerging strategy for fabricating dynamic IR by controlled situ growth of novel photopolymerizable blue phase liquid crystals with cubic nanoarchitectures onto highly aligned MXene nanostructured thin films. The resulting MXene-integrated 3D soft photonic exhibit vivid structural colors reversible switching between a bright colored state dark black under low DC electric field. As illustration, proof-of-concept pixelated devices allow pixel-controllable electrochromism are demonstrated. Furthermore, free-standing electrochromic flexible film such fabricated, where thermal enabled leveraging superior electrothermal conversion mid-IR emissivity nanomaterials.

Language: Английский

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MXene‐Enabled Pneumatic Multiscale Shape Morphing for Adaptive, Programmable and Multimodal Radar‐infrared Compatible Camouflage

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(24)

Published: April 5, 2024

Abstract Achieving radar‐infrared compatible camouflage with dynamic adaptability has been a long‐sought goal, but faces significant challenges owing to the limited dispersion relations of conventional material systems operating in different wavelength ranges. Here, this work proposes concept pneumatic multiscale shape morphing and design periodically arranged unit consisting MXene‐based morphable conductors intake platforms. During gas actuation, conductor transforms centimeter‐scale 2D flat sheets into 3D balloon shapes enhance microwave absorption behavior, also reconfigures micrometer‐scale MXene wrinkles smooth planes combination cavity‐induced low heat transfer minimize infrared (IR) signatures. Through theory‐guided reverse engineering, final matrix shows remarkable frequency tunability (2.64–18.0 GHz), moderate IR emissivity regulation (0.14 at 7–16.5 µm), rapid responsiveness (≈30 ms), wide‐angle operation (>45 ° ), excellent environmental tolerance. Additionally, multiplexed enables over 14 programmable coding sequences that independently alter thermal radiation without compromising radar stealth, allows multimodal switching between three distinct states. The approach may facilitate evolution techniques electromagnetic functional materials toward multispectral, intelligence.

Language: Английский

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Bioinspired hydrogel actuator for soft robotics: Opportunity and challenges

Nano Today, Journal Year: 2023, Volume and Issue: 49, P. 101764 - 101764

Published: Jan. 31, 2023

Language: Английский

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Advances in 4D printing of liquid crystalline elastomers: materials, techniques, and applications

Materials Horizons, Journal Year: 2022, Volume and Issue: 9(7), P. 1825 - 1849

Published: Jan. 1, 2022

We review recent advances in 4D printing of LCEs, with emphasis on synthesis and processing methods that enable microscopic changes the molecular orientation hence macroscopic properties printed objects.

Language: Английский

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Light-driven dandelion-inspired microfliers

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 26, 2023

In nature, many plants have evolved diverse flight mechanisms to disperse seeds by wind and propagate their genetic information. Inspired the mechanism of dandelion seeds, we demonstrate light-driven dandelion-inspired microfliers based on ultralight super-sensitive tubular-shaped bimorph soft actuator. Like in falling velocity as-proposed microflier air can be facilely controlled tailoring degree deformation "pappus" under different light irradiations. Importantly, resulting is able achieve a mid-air above source with sustained time ~8.9 s maximum height ~350 mm thanks unique dandelion-like 3D structures. Unexpectedly, found exhibit upward accompanied autorotating motion, rotation mode customized either clockwise or counterclockwise direction engineering shape programmability actuator films. The research disclosed herein offer new insights into development untethered energy-efficient artificial aerial vehicles that are paramount significance for applications from environmental monitoring wireless communication future solar sail robotic spacecraft.

Language: Английский

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