Functional Fibers and Fabrics for Soft Robotics, Wearables, and Human–Robot Interface

Advanced Materials, Год журнала: 2020, Номер 33(19)

Опубликована: Окт. 6, 2020

Abstract Soft robotics inspired by the movement of living organisms, with excellent adaptability and accuracy for accomplishing tasks, are highly desirable efficient operations safe interactions human. With emerging wearable electronics, higher tactility skin affinity pursued user‐friendly human–robot interactions. Fabrics interlocked fibers perform traditional static functions such as warming, protection, fashion. Recently, dynamic fabrics favorable to deliver active stimulus responses sensing actuating abilities soft‐robots wearables. First, responsive mechanisms fiber/fabric actuators their performances under various external stimuli reviewed. Fiber/yarn‐based artificial muscles manipulation assistance in human motion discussed, well smart clothes improving perception. Second, geometric designs, fabrications, mechanisms, fibers/fabrics energy harvesting from body environments summarized. Effective integration between electronic components garments, skin, organisms is illustrated, presenting multifunctional platforms self‐powered potential biomedicine. Lastly, relationships robotic/wearable stimuli, together challenges possible routes revolutionizing robotic wearables this new era proposed.

Язык: Английский

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Recent Progress on Flexible Capacitive Pressure Sensors: From Design and Materials to Applications

Advanced Materials Technologies, Год журнала: 2021, Номер 6(4)

Опубликована: Март 5, 2021

Abstract For decades, the revolution in design and fabrication methodology of flexible capacitive pressure sensors using various inorganic/organic materials has significantly enhanced field wearable electronics with a wide range applications aerospace, automobiles, marine environment, robotics, healthcare, consumer/portable electronics. Mathematical modelling, finite element simulations, unique strategies are utilized to fabricate diverse shapes diaphragms, shells, cantilevers which function normal, touch, or double touch modes, operation principles inspired from microelectromechanical systems (MEMS) based sensing techniques. The technique detects changes capacitance due deformation/deflection sensitive mechanical that alters separation gap capacitor. Due advancement state‐of‐the‐art technologies, performance properties enhanced. In this review paper, recent progress techniques terms design, materials, is reported. mechanics steps paper‐based low‐cost MEMS/flexible devices also broadly Lastly, sensors, challenges, future perspectives discussed.

Язык: Английский

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Electrospun liquid crystal elastomer microfiber actuator

Science Robotics, Год журнала: 2021, Номер 6(57)

Опубликована: Авг. 11, 2021

Fibers capable of generating axial contraction are commonly seen in nature and engineering applications. Despite the broad applications fiber actuators, it is still very challenging to fabricate actuators with combined large actuation strain, fast response speed, high power density. Here, we report fabrication a liquid crystal elastomer (LCE) microfiber using facile electrospinning technique. Owing extremely small size LCE microfibers, they can generate strain (~60 percent) speed (<0.2 second) density (400 watts per kilogram), resulting from nematic-isotropic phase transition mesogens. Moreover, no performance degradation detected microfibers after 106 cycles loading unloading maximum 20 percent at temperature (90 degree Celsius). The diameter also results self-oscillatory behavior steady field. In addition, polydopamine coating layer, electrospun be precisely remotely controlled by near-infrared laser through photothermal effect. Using actuator, have successfully constructed microtweezer, microrobot, light-powered microfluidic pump.

Язык: Английский

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Selection rules of triboelectric materials for direct-current triboelectric nanogenerator

Nature Communications, Год журнала: 2021, Номер 12(1)

Опубликована: Авг. 3, 2021

Abstract The rapid development of Internet Things and artificial intelligence brings increasing attention on the harvesting distributed energy by using triboelectric nanogenerator (TENG), especially direct current TENG (DC-TENG). It is essential to select appropriate materials for obtaining a high performance TENG. In this work, we provide set rules selecting DC-TENG based several basic parameters, including surface charge density, friction coefficient, polarization, utilization rate charges, stability. On basis selection rules, polyvinyl chloride, used widely in industry rather than TENG, selected as layer. Its effective density can reach up ~8.80 mC m −2 microstructure-designed DC-TENG, which new record all kinds TENGs. This work offer guideline promote practical applications DC-TENG.

Язык: Английский

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Single fibre enables acoustic fabrics via nanometre-scale vibrations

Nature, Год журнала: 2022, Номер 603(7902), С. 616 - 623

Опубликована: Март 16, 2022

Язык: Английский

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Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

Science Advances, Год журнала: 2021, Номер 7(22)

Опубликована: Май 28, 2021

Coaxial wet-spinning is used to fabricate stretchable liquid metal sheath-core microfibers with consistently high conductance.

Язык: Английский

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Scalable Fabrication of Kevlar/Ti₃C₂T_x MXene Intelligent Wearable Fabrics with Multiple Sensory Capabilities

ACS Nano, Год журнала: 2021, Номер 15(5), С. 8676 - 8685

Опубликована: Май 12, 2021

Fiber-based wearable electronics are highly desirable for devices that expected to be lightweight, easily prepared, durable, flexible, washable, and conformable. However, developing fiber-based fabric simulate human perceptual systems or even transcend the sensory capabilities of natural creatures is still a pivotal challenge. Herein, we present Kevlar/MXene (KM) intelligent with multiple using an ingenious strategy continuous wet-spinning. The KM fibers can washed, knitted, sewed, fabricated into smart systems. An mask prepared monitor breathing in time detect respiratory problems high accuracy portability. It provides important reference judging diseases achieving remote diagnosis. Additionally, temperature-responsive glove developed help people make proper behavioral prejudgments prevent potential injuries by sensing surrounding hazards beforehand. Moreover, this system allows soft robotics rough identification about basic properties unknown liquid molecules. Overall, virtue ultrafast responsiveness (90 ms), resilience (110 ultrasensitive capability pressure responding, offers gentle approach wireless detection information encryption, transmission, preservation touching variable pressing on basis International Morse code principles, establishing competitive promising candidate next generation flexible electronics.

Язык: Английский

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Functional Fiber Materials to Smart Fiber Devices

Chemical Reviews, Год журнала: 2022, Номер 123(2), С. 613 - 662

Опубликована: Авг. 17, 2022

The development of fiber materials has accompanied the evolution human civilization for centuries. Recent advances in science and chemistry offered fibers new applications with various functions, including energy harvesting, storing, displaying, health monitoring treating, computing. unique one-dimensional shape devices endows them advantages to work as human-interfaced electronics due small size, lightweight, flexibility, feasibility integration into large-scale textile systems. In this review, we first present a discussion basics design principles devices, followed by comprehensive analysis on recently developed devices. Finally, provide current challenges facing field give an outlook future research directions. With novel continuing be discovered after two decades research, envision that could have important impact our life near future.

Язык: Английский

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Functionalized Fiber-Based Strain Sensors: Pathway to Next-Generation Wearable Electronics

Nano-Micro Letters, Год журнала: 2022, Номер 14(1)

Опубликована: Фев. 15, 2022

Wearable strain sensors are arousing increasing research interests in recent years on account of their potentials motion detection, personal and public healthcare, future entertainment, man-machine interaction, artificial intelligence, so forth. Much has focused fiber-based due to the appealing performance fibers, including processing flexibility, wearing comfortability, outstanding lifetime serviceability, low-cost large-scale capacity. Herein, we review latest advances functionalization device fabrication fiber materials toward applications wearable sensors. We describe approaches for preparing conductive fibers such as spinning, surface modification, structural transformation. also introduce sensing mechanisms state-of-the-art analyze merits demerits. The multifunctional summarized with typical examples. finally critically tough challenges remarks sensors, aiming implement them real applications.

Язык: Английский

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Robust cholesteric liquid crystal elastomer fibres for mechanochromic textiles

Nature Materials, Год журнала: 2022, Номер 21(12), С. 1441 - 1447

Опубликована: Сен. 29, 2022

Mechanically responsive textiles have transformative potential in many areas from fashion to healthcare. Cholesteric liquid crystal elastomers strong mechanochromic responses that offer attractive opportunities for such applications. Nonetheless, making crystalline elastomer fibres suitable is challenging since the Plateau-Rayleigh instability tends break up precursor solutions into droplets. Here, we report a simple approach balances viscoelastic properties of solution avoid this outcome and achieve long mechanically robust cholesteric filaments. These filaments fast, progressive reversible responses, red blue (wavelength shift 155 nm), when stretched 200%. Moreover, can be sewed garments withstand repeated stretching regular machine washing. This resulting may useful applications wearable technology other benefiting autonomous strain sensing or detection critically deformations.

Язык: Английский

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