Bioinspired Phototropic MXene‐Reinforced Soft Tubular Actuators for Omnidirectional Light‐Tracking and Adaptive Photovoltaics

Advanced Functional Materials, Год журнала: 2022, Номер 32(26)

Опубликована: Март 3, 2022

Abstract Endowing artificial advanced materials and systems with biomimetic self‐regulatory intelligence is of paramount significance for the development somatosensory soft robotics adaptive optoelectronics. Herein, a bioinspired phototropic MXene‐reinforced tubular actuator reported that exhibits omnidirectional self‐orienting ability capable quickly sensing, continuously tracking, adaptively interacting incident light in all zenithal azimuthal angles 3D space. The novelty lies three aspects: 1) new polymerizable MXene nanomonomer shows high compatibility liquid crystal elastomer (LCE) matrices can be situ photopolymerized into polymer networks, thus enhancing mechanical photoactuation properties; 2) distinct hollow radially symmetrical structure facilitates fast photoresponsiveness performance through retarding heat conduction along radial direction; 3) MXene‐LCE simultaneously integrates actuation, built‐in feedback loop, leading to light‐tracking accuracy phototropism like stem plants nature. As proof‐of‐concept demonstration, an photovoltaic system solar energy harvesting maximization illustrated. This work provide insights intelligent toward optoelectronics, robotics, beyond.

Язык: Английский

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Photo-triggered full-color circularly polarized luminescence based on photonic capsules for multilevel information encryption

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Май 25, 2023

Materials with phototunable full-color circularly polarized luminescence (CPL) have a large storage density, high-security level, and enormous prospects in the field of information encryption decryption. In this work, device-friendly solid films color tunability are prepared by constructing Förster resonance energy transfer (FRET) platforms chiral donors achiral molecular switches liquid crystal photonic capsules (LCPCs). These LCPCs exhibit photoswitchable CPL from initial blue emission to RGB trichromatic signals under UV irradiation due synergistic effect chirality show strong time dependence because different FRET efficiencies at each node. Based on these response characteristics, concept multilevel data using LCPC is demonstrated.

Язык: Английский

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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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Materials-Driven Soft Wearable Bioelectronics for Connected Healthcare

Chemical Reviews, Год журнала: 2024, Номер 124(2), С. 455 - 553

Опубликована: Янв. 4, 2024

In the era of Internet-of-things, many things can stay connected; however, biological systems, including those necessary for human health, remain unable to connected global Internet due lack soft conformal biosensors. The fundamental challenge lies in fact that electronics and biology are distinct incompatible, as they based on different materials via functioning principles. particular, body is curvilinear, yet typically rigid planar. Recent advances design have generated tremendous opportunities wearable bioelectronics, which may bridge gap, enabling ultimate dream healthcare anyone, anytime, anywhere. We begin with a review historical development healthcare, indicating significant trend healthcare. This followed by focal point discussion about new design, particularly low-dimensional nanomaterials. summarize material types their attributes designing bioelectronic sensors; we also cover synthesis fabrication methods, top-down, bottom-up, combined approaches. Next, discuss energy challenges progress made date. addition front-end devices, describe back-end machine learning algorithms, artificial intelligence, telecommunication, software. Afterward, integration systems been applied various testbeds real-world settings, laboratories preclinical clinical environments. Finally, narrate remaining conjunction our perspectives.

Язык: Английский

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Liquid Crystal Assembly for Ultra-dissymmetric Circularly Polarized Luminescence and Beyond

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(24), С. 12951 - 12966

Опубликована: Июнь 5, 2023

Circularly polarized luminescence (CPL) is attracting much interest because it can carry extensive optical information. CPL shows left- or right-handedness and be regarded as part of high-level visual perception to supply an extra dimension information with regard regular light. A key meeting the needs for practical applications develop emerging field ultra-dissymmetric CPL. Chiral liquid crystal (LC) assemblies─otherwise referred cholesteric crystals (CLCs)─are essentially organized helical superstructures a highly ordered one-dimensional orientation, distinctly superior supramolecules. CLCs achieve perfect equilibrium molecular short-range interaction long-range orientational order, enabling molecule-scale chirality on pitch observable scale. LC assembly could ideal strategy amplifying chirality, making accessible Herein, we focused some basic but important issues regarding CPL: (i) How created from chiral dyes? (ii) Is luminescent dyes essential factor generation CPL? That is, all emit vice versa? (iii) transferred within intermolecular systems, what principles transmission should followed? Given these queries our work, in this Perspective discuss generation, transmission, modulation assembly, aiming design build up novel chiroptical materials. Recent CPL-active microstructures three-dimensional displays, circularly lasers, asymmetric catalysis are also discussed.

Язык: Английский

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Self-assembled liquid crystal architectures for soft matter photonics

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

Опубликована: Сен. 13, 2022

Self-assembled architectures of soft matter have fascinated scientists for centuries due to their unique physical properties originated from controllable orientational and/or positional orders, and diverse optic photonic applications. If one could know how design, fabricate, manipulate these optical microstructures in systems, such as liquid crystals (LCs), that would open new opportunities both scientific research practical applications, the interaction between light matter, intrinsic assembly topological patterns, multidimensional control (polarization, phase, spatial distribution, propagation direction). Here, we summarize recent progresses self-assembled typical thermotropic LCs bio-based lyotropic LCs. After briefly introducing basic definitions materials, present manipulation schemes various LC microstructures, especially topographic configurations. This work further illustrates external-stimuli-enabled dynamic controllability structures demonstrates several emerging Lastly, discuss challenges materials towards photonics, envision future perspectives this field.

Язык: Английский

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Multimodal-Responsive Circularly Polarized Luminescence Security Materials

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(7), С. 4246 - 4253

Опубликована: Фев. 1, 2023

Nations, industries, and aspects of everyday life have undergone forgery counterfeiting ever since the emergence commercialization. Securing documents products with anticounterfeit additives shows promise for authentication, allowing one to combat ever-increasing global counterfeiting. One most-used effective encryption strategy is combine optical-security markers on required protection objects; however, state-of-the-art labels still suffer from imitation due their poor complexity easy forecasting, as a result deterministic production. Developing advanced anticounterfeiting tags unusual optical characters further incorporating complex security features are desired achieve multimodal, unbreakable authentication capacity; unfortunately, this has not yet been achieved. Here, we prepare series stable circularly polarized luminescence (CPL) materials, composed toxicity-free, high-quality-emitting inorganic quantum dots (QDs) liquid crystals, using designed helical-coassembly strategy. This CPL system achieves figure merit (FM, assessing performance both dissymmetry yield) value 0.39, fulfilling practical demands applications. Based these structures, produce type multimodal-responsive materials (MRSMs) that exhibits six different stimuli-responsive modes, including light activation, polarization, temperature, voltage, pressure, view angle. Thus, show proof-of-principle blockchain-like integrated system, multimodal-responsive, interactive/changeable information encryption–decryption. We encapsulate obtained into fiber expand our work flexible fabrics, is, building an intelligent textile color-adaptable function along environmental change.

Язык: Английский

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Circularly polarized luminescence in chiral orientationally ordered soft matter systems

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

Опубликована: Июль 23, 2023

Abstract Circularly polarized luminescent (CPL) materials have received significant attention in the field of fundamental science recently. These offer substantial advancement technological applications, such as optical data storage, displays, and quantum communication. Various strategies been proposed self‐assembled consisting inorganic, organic, hybrid systems, particularly chiral orientationally ordered soft matter systems (e.g., liquid crystals (LCs) LC polymers). However, developing scientific approaches to achieve pronounced steerable circularly light emission remains challenging. Herein, we present a comprehensive review on recent development CPL based LCs, including thermotropic LCs (cholesteric bent‐core LCs), lyotropic (nanocellulose polyacetylene‐based polymers LC‐based polymers, helical nanofibers, network). In addition, mechanisms, design principles, potential applications these are systematically reviewed. This summarizes with prospect latent challenges, which can strengthen our understanding basic principles provide new insight into progress several fields, chemistry, science, optics, electronics, biology.

Язык: Английский

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Active terahertz beam steering based on mechanical deformation of liquid crystal elastomer metasurface

Light Science & Applications, Год журнала: 2023, Номер 12(1)

Опубликована: Янв. 4, 2023

Abstract Active metasurfaces are emerging as the core of next-generation optical devices with their tunable responses and flat-compact topography. Especially for terahertz band, active have been developed fascinating chopping compressive sensing imaging. However, performance regulation by changing dielectric parameters integrated functional materials exhibits severe limitations parasitic losses. Here, we introduce a C-shape-split-ring-based phase discontinuity metasurface liquid crystal elastomer substrate infrared modulation wavefront. Line-focused light is applied to manipulate deflection substrate, enabling controllable broadband wavefront steering maximum output angle change 22° at 0.68 THz. Heating another control method also investigated compared control. We further demonstrate beam steerer, frequency modulator, splitter, which highly desired in wireless communication imaging systems. The proposed scheme demonstrates promising prospects mechanically deformable metasurfaces, thereby paving path development reconfigurable metasurfaces.

Язык: Английский

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