Embedded Physical Intelligence in Liquid Crystalline Polymer Actuators and Robots

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Фев. 20, 2024

Abstract Responsive materials possess the inherent capacity to autonomously sense and respond various external stimuli, demonstrating physical intelligence. Among diverse array of responsive materials, liquid crystalline polymers (LCPs) stand out for their remarkable reversible stimuli‐responsive shape‐morphing properties potential creating soft robots. While numerous reviews have extensively detailed progress in developing LCP‐based actuators robots, there exists a need comprehensive summaries that elucidate underlying principles governing actuation how intelligence is embedded within these systems. This review provides overview recent advancements robots endowed with using LCPs. structured around stimulus conditions categorizes studies involving LCPs based on fundamental control stimulation logic approach. Specifically, three main categories are examined: systems changing those operating under constant equip learning capabilities. Furthermore, persisting challenges be addressed outlined discuss future avenues research this dynamic field.

Язык: Английский

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Optical Characteristics of Stretchable Chiral Liquid Crystal Elastomer under Multiaxial Stretching

Advanced Functional Materials, Год журнала: 2023, Номер 33(46)

Опубликована: Июль 6, 2023

Abstract Chiral liquid crystal elastomers (CLCEs) are soft photonic materials that exhibit both the characteristics of nanoscale periodic helical structures and mechanical properties rubber. Owing to its elasticity, structural color CLCEs can be tuned through deformations known as mechanochromism. Thus far, there is significant research attention exploring mechanochromism CLCEs. However, most studies have only discussed shifting under uniaxial deformation. Therefore, optical chiral deformation behaviors multiaxial stress not well understood. This study investigates (uniaxial, biaxial, out‐of‐plane) stretching‐induced structure change resulting The results confirm stretching leads a loss intrinsic circular polarization selectivity in due helix unwinding deformations, while biaxial out‐of‐plane maintain polarization.

Язык: Английский

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Clinical translation of wireless soft robotic medical devices

Nature Reviews Bioengineering, Год журнала: 2024, Номер 2(6), С. 470 - 485

Опубликована: Март 11, 2024

Язык: Английский

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Recent Advances in 1D Photonic Crystals: Diverse Morphologies and Distinctive Structural Colors for Multifaceted Applications

Advanced Optical Materials, Год журнала: 2024, Номер 12(19)

Опубликована: Март 14, 2024

Abstract 1D photonic crystals (1DPCs) with hierarchically structured lamellar periodic frameworks that enable precise control of light‐matter interactions and contribute robust structural colors represent a groundbreaking advancement in optical materials. The microstructural characteristics the constituent material properties these materials play pivotal roles determining their performance functionality. In recent years, diverse array novel structures crafted from various emerged, showcasing tremendous potential advanced applications. This article provides an in‐depth review developments 1DPCs, emphasizing morphological designs, fabrication strategies, detail, 1DPCs featuring distinct geometrical morphologies, including lamellar, helical, fibrous, spherical, nanochained are systematically introduced, highlighting unique arising microstructures. Then, methods, involving some innovative techniques utilizing standing‐wave optics, UV dual photopolymerization, inkjet printing, succinctly summarized for constructing different by using building Subsequently, typical application examples listed discussed visual sensing, intelligent displays, anti‐counterfeiting technology, pigments, devices. Finally, passage addresses current challenges presents forward‐looking perspective on future 1DPCs.

Язык: Английский

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Knittable Electrochemical Yarn Muscle for Morphing Textiles

ACS Nano, Год журнала: 2024, Номер 18(13), С. 9500 - 9510

Опубликована: Март 13, 2024

Morphing textiles, crafted using electrochemical artificial muscle yarns, boast features such as adaptive structural flexibility, programmable control, low operating voltage, and minimal thermal effect. However, the progression of these textiles is still impeded by challenges in continuous production yarn muscles necessity for proper structure designs that bypass operation extensive electrolyte environments. Herein, a meters-long sheath-core structured carbon nanotube (CNT)/nylon composite continuously prepared. The nylon core not only reduces consumption CNTs but also amplifies surface area interaction between CNT electrolyte, leading to an enhanced effective actuation volume. When driven electrochemically, CNT@nylon demonstrates maximum contractile stroke 26.4%, rate 15.8% s–1, power density 0.37 W g–1, surpassing pure 1.59, 1.82, 5.5 times, respectively. By knitting yarns into soft fabric serves both scaffold container, we achieved morphing textile achieved. This can perform multiple motion modes air contraction sectional bending.

Язык: Английский

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Molecular hard-segment engineered polyurethane with thermochromism, shape memory, humidity-driven, and self-healing capabilities

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 404, С. 135266 - 135266

Опубликована: Янв. 4, 2024

Язык: Английский

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A Solvent-Templated Porous Liquid Crystal Elastomer with Tactile Sensation beyond Reversible Actuation toward Versatile Artificial Muscles

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(19), С. 25404 - 25414

Опубликована: Май 1, 2024

Liquid crystal elastomers (LCEs), as a classical two-way shape-memory material, are good candidates for developing artificial muscles that mimic the contraction, expansion, or rotational behavior of natural muscles. However, biomimicry is currently focused more on actuation functions dominated by muscle fibers, whereas tactile sensing neuronal receptors and synapses have not been well captured. Very few studies reported concept LCEs, but signals were still donated macroscopic actuation, is, variations in angle length. Herein, we develop conductive porous LCE (CPLCE) using solvent (dimethyl sulfoxide (DMSO))-templated photo-cross-linking strategy, followed carbon nanotube (CNT) incorporation. The CPLCE has excellent reversible contraction/elongation manner similar to skeletal Moreover, shows pressure-sensing performance providing real-time electrical capable microtouch sensing, which very sensing. Furthermore, sensation can be integrated into single system. Proof-of-concept reveal CPLCE-based sensitive external touch while maintaining its performance. with beyond expected benefit development versatile intelligent robots.

Язык: Английский

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Bio‐Inspired Camouflage Skin with Photonic Crystal Structure and Size‐Confinement Effect

Advanced Optical Materials, Год журнала: 2024, Номер 12(11)

Опубликована: Фев. 22, 2024

Abstract Camouflage skin holds immense potential for a variety of advanced applications, such as artificial intelligence, soft robotics, and flexible/wearable electronics. Currently, most existing materials constructing camouflage are mainly based on inorganic with an inverse opal scaffold, which significantly limits their further development because the poor mechanical properties environmental instability. Inspired by rana slvaticas , new type one‐dimentional (1D) photonic crystal (PC) gel is designed synthesized, combines advantages 1D PC structures 3D flexible gels in single device. Taking advantage unique structures, resulting skins demonstrated attractive properties, including excellent performance, self‐adaptive capabilities, long‐term stability ambient conditions. Specifically, can quickly recognize match background modulating optical signals external stimuli. The synergistic effect glycerol, dodecyl glycerol itaconate (DGI), nano‐space altogether contribute to outstanding skin. Overall, combining bio‐inspired concept molecular engineering strategy, greatly enriched application smart field.

Язык: Английский

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Better Understanding of the Composite Colored Cholesteric Liquid Crystal Polymer Network Film Prepared through Polymerization-Induced Chiral Dopant Diffusion

ACS Applied Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 13, 2025

Язык: Английский

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Photonic Interpenetrating Polymer Network Fibers Comprising Intertwined Solid-State Cholesteric Liquid Crystal and Polyelectrolyte Networks for Sensor Applications

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(13), С. 16830 - 16843

Опубликована: Март 21, 2024

Uniform-sized photonic interpenetrating polymer network (IPN) fibers comprising intertwined solid-state cholesteric liquid crystal (CLCsolid) and anionic poly(acrylic acid) (PAA) or cationic poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) networks (photonic IPNPAA IPNPDMAEMA fibers) were developed for sensor applications. with a perfect structure fabricated inside Teflon tube templates without any treatments realizing planar orientation in those fibers. The dominant wavelength of the color from photograph taken cellular phone was used to measure change. Photonic treated KOH (IPNKOH sensing humidity divalent metal ions. linear ranges relative Ca2+ detection 21–92% 0.5–3.5 mM, their limits (LODs) 7.86% 0.07 respectively. (or IPNPDMAEMA) fiber immobilized urease (IPNPAA-urease) glucose oxidase (IPNPDMAEMA-GOx)) urea glucose) biosensor application. IPNPAA-urease IPNPDMAEMA-GOx) red-shifted response range 10–60 mM 2–16 mM) an LOD 2.54 0.76 mM). These IPN are promising because easy fabrication miniaturization, battery-free device, cost-effectiveness, visual using sophisticated analytical instruments. provide new possibilities widespread use sensors cutting-edge wearable technology beyond.

Язык: Английский

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