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

Light Science & Applications, Год журнала: 2022, Номер 11(1)

Опубликована: Июль 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.

Язык: Английский

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

Nano-Micro Letters, Год журнала: 2022, Номер 15(1)

Опубликована: Ноя. 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.

Язык: 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, Год журнала: 2022, Номер 61(42)

Опубликована: Сен. 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.

Язык: Английский

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Stimulus‐Responsive Photonic Crystals for Advanced Security

Advanced Functional Materials, Год журнала: 2022, Номер 32(40)

Опубликована: Июль 20, 2022

Abstract Counterfeiting is a growing global issue causing severe negative impacts on the social economy and posing serious security threats to individuals communities. However, current anticounterfeiting technologies are relatively well known fakers lack sufficient owing development commercialization of high‐resolution equipment. Thus, designing new materials systems urgently needed. Photonic crystals (PCs) with vivid structural colors promising for advanced applications because their unique optical characteristics. In particular, responsive PCs (RPCs), whose signals can be readily adjusted by external stimuli, expected provide improved may used determine authenticity banknotes, documents, drugs. this review, strategies summarized RPCs, including filling into interstitial space periodic photonic structures using as construction blocks PCs. Subsequently, latest progress in developing RPCs constructed encryption information discussed detail. Finally, challenges outlook presented.

Язык: Английский

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Locally controllable magnetic soft actuators with reprogrammable contraction-derived motions

Science Advances, Год журнала: 2022, Номер 8(25)

Опубликована: Июнь 24, 2022

Reprogrammable magneto-responsive soft actuators capable of working in enclosed and confined spaces adapting functions under changing situations are highly demanded for new-generation smart devices. Despite the promising prospect, realization versatile morphing modes (more than bending) local magnetic control remains challenging but is crucial further on-demand applications. Here, we address challenges by maximizing unexplored potential magnetothermal responsiveness covalent adaptable networks (CANs) liquid crystalline elastomers (LCEs). Various magneto-actuated contraction-derived motions that were hard to achieve previously (e.g., bidirectional shrinkage dynamic 3D patterns) can be attained, reprogrammed, assembled seamlessly endow functional diversity complexity. By integration LCEs with different threshold values, sequential readily realized. Many actuation portfolios performed rationally imputing “logic switch” sequences. Meanwhile, our systems exhibit additional favorable performances including stepwise controllability, multiresponsiveness, self-healing, remolding ability.

Язык: Английский

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Recent Advances in 4D Printing of Liquid Crystal Elastomers

Advanced Materials, Год журнала: 2022, Номер 35(23)

Опубликована: Дек. 3, 2022

Liquid crystal elastomers (LCEs) are renowned for their large, reversible, and anisotropic shape change in response to various external stimuli due lightly cross-linked polymer networks with an oriented mesogen direction, thus showing great potential applications robotics, bio-medics, electronics, optics, energy. To fully take advantage of the stimuli-responsive behaviors LCEs, it is preferable achieve a locally controlled alignment into monodomain orientations. In recent years, application 4D printing LCEs opens new doors simultaneously programming 3D geometry, offering more opportunities higher feasibility fabrication 4D-printed LCE objects desirable properties. Here, state-of-the-art advances reviewed, emphasis on both mechanisms applications. First, fundamental properties working principles representative techniques briefly introduced. Then, by advantages over conventional manufacturing methods demonstrated. Finally, perspectives current challenges development trends toward discussed, which may shed light future research directions this field.

Язык: Английский

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Liquid crystal-based structural color actuators

Light Science & Applications, Год журнала: 2022, Номер 11(1)

Опубликована: Авг. 5, 2022

Abstract Animals can modify their body shape and/or color for protection, camouflage and communication. This adaptability has inspired fabrication of actuators with structural changes to endow soft robots additional functionalities. Using liquid crystal-based materials is a promising approach. In this review, we discuss the current state potential applications these in robotic devices.

Язык: Английский

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Stimuli‐responsive photonic actuators for integrated biomimetic and intelligent systems

Deleted Journal, Год журнала: 2023, Номер 1(1)

Опубликована: Июль 27, 2023

Abstract Photonic actuators, serving as an emerging kind of intelligent stimuli‐responsive material, can exhibit the abilities to change their structural colors/fluorescence and shapes under specific external stimuli, which have demonstrated essential applications in fields soft robotics, sensors, bionics, information storage, anti‐counterfeiting, energy harvesting. In this review, we reported state‐of‐the‐art research progress photonic actuators classified on basis material type focusing actuation mechanisms, design principles, processing techniques. We also broadly summarized relative robots, so on. Finally, a vision for challenges area future promising directions is presented.

Язык: Английский

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Robust integration of polymerizable perovskite quantum dots with responsive polymers enables 4D-printed self-deployable information display

Matter, Год журнала: 2023, Номер 6(4), С. 1278 - 1294

Опубликована: Март 3, 2023

Язык: Английский

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Self‐Healing and Recyclable Polymer Electrolyte Enabled with Boronic Ester Transesterification for Stabilizing Ion Deposition

Advanced Functional Materials, Год журнала: 2023, Номер 33(13)

Опубликована: Янв. 15, 2023

Abstract Damage to solid polymer electrolytes can lead mechanical degradation, short circuits, or functional failures. Therefore, introducing a self‐healing function is an ideal strategy improve the safety and reliability of electrolyte systems. Herein, dynamic boronic ester‐based (DB‐SHPEs) with excellent properties interfacial stability are developed via thermally initiated ring‐opening reaction between thiol epoxy groups. The DB‐SHPEs containing ester bonds not only alter topologies transesterification exhibit good capability but also enable homogeneous deposition Li ions on metal through Lewis acid–base interactions boron atoms salt anions. Furthermore, endow DB‐SHPE reprocessability recyclability taking advantage associative reaction. More significantly, Li/DB‐SHPE/Li symmetric cells stable voltage plateau after cycling for 1200 h LiFePO 4 /DB‐SHPE/Li batteries present performance, suggesting that high‐performance multiple functions promising materials next‐generation lithium batteries.

Язык: Английский

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