Flexible Metamaterial Electronics

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(52)

Published: March 24, 2022

Abstract Over the last decade, extensive efforts have been made on utilizing advanced materials and structures to improve properties functionalities of flexible electronics. While conventional ways are approaching their natural limits, a revolutionary strategy, namely metamaterials, is emerging toward engineering structural break existing fetters. Metamaterials exhibit supernatural physical behaviors, in aspects mechanical, optical, thermal, acoustic, electronic that inaccessible materials, such as tunable stiffness or Poisson's ratio, manipulating electromagnetic elastic waves, topological programmable morphability. These salient merits motivate metamaterials brand‐new research direction inspired innovative applications Here, groundbreaking interdisciplinary field first coined “flexible metamaterial electronics,” focusing enhancing innovating electronics via design metamaterials. Herein, latest progress trends this infant reviewed while highlighting potential value. First, brief overview starts with introducing combination Then, developed discussed, self‐adaptive deformability, ultrahigh sensitivity, multidisciplinary functionality, followed by discussion prospects. Finally, challenges opportunities facing advance cutting‐edge summarized.

Language: Английский

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Programmable multi-physical mechanics of mechanical metamaterials

Materials Science and Engineering R Reports, Journal Year: 2023, Volume and Issue: 155, P. 100745 - 100745

Published: June 26, 2023

Mechanical metamaterials are engineered materials with unconventional mechanical behavior that originates from artificially programmed microstructures along intrinsic material properties. With tremendous advancement in computational and manufacturing capabilities to realize complex over the last decade, field of has been attracting wide attention due immense possibilities achieving unprecedented multi-physical properties which not attainable naturally-occurring materials. One rapidly emerging trends this is couple mechanics unit cell architecture different other aspects such as electrical or magnetic fields, stimuli like temperature, light chemical reactions expand scope actively programming on-demand responses. In article, we aim abridge outcomes relevant literature concerning property modulation focusing on trend bi-level design, subsequently highlight broad-spectrum potential their critical engineering applications. The evolving trends, challenges future roadmaps have critically analyzed here involving notions real-time reconfigurability functionality programming, 4D printing, nano-scale metamaterials, artificial intelligence machine learning, origami/kirigami, living matter, soft conformal microstructures, service-life effects scalability.

Language: Английский

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Auxetic mechanical metamaterials and their futuristic developments: A state-of-art review

Materials Today Communications, Journal Year: 2022, Volume and Issue: 34, P. 105285 - 105285

Published: Dec. 29, 2022

Language: Английский

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Flexible and Stretchable Electrochemical Sensors for Biological Monitoring

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 28, 2023

The rise of flexible and stretchable electronics has revolutionized biosensor techniques for probing biological systems. Particularly, electrochemical sensors (FSECSs) enable the in situ quantification numerous biochemical molecules different entities owing to their exceptional sensitivity, fast response, easy miniaturization. Over past decade, fabrication application FSECSs have significantly progressed. This review highlights key developments electrode functionalization. It delves into sensing various biomarkers, including metabolites, electrolytes, signaling molecules, neurotransmitters from systems, encompassing outer epidermis, tissues/organs vitro vivo, living cells. Finally, considering preparation applications, current challenges future opportunities are discussed.

Language: Английский

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A Snakeskin‐Inspired, Soft‐Hinge Kirigami Metamaterial for Self‐Adaptive Conformal Electronic Armor

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(31)

Published: June 10, 2022

Abstract A majority of soft‐body creatures evolve armor or shells to protect themselves. Similar protection demand is for flexible electronics working in complex environments. Existing works mainly focus on improving the sensing capabilities such as electronic skin (E‐skin). Inspired by snakeskin, a novel (E‐armor) proposed, which not only possesses mechanical flexibility and functions similar E‐skin, but also able itself underlying soft body from external physical damage. The geometry kirigami metamaterial (Kiri‐MM) ensures auxetic stretchability meanwhile large areal coverage sufficient protection. Moreover, suppress inherent undesired out‐of‐plane buckling conventional Kiri‐MMs conformal applications, hinges are used form distinct (hinges)‐rigid (tiles) configuration. Analytical, computational, experimental studies behaviors soft‐hinge Kiri‐MM E‐armor demonstrate merits this design, i.e., stretchability, conformability, protectability, applied electronics. Deploying conductive material at enables facile wiring strategies large‐scale circuit arrays. Functional systems controllable display purposes provide simple examples wide spectrum applications concept.

Language: Английский

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Active Materials for Functional Origami

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: April 30, 2023

Abstract In recent decades, origami has been explored to aid in the design of engineering structures. These structures span multiple scales and have demonstrated be used toward various areas such as aerospace, metamaterial, biomedical, robotics, architectural applications. Conventionally, or deployable actuated by hands, motors, pneumatic actuators, which can result heavy bulky On other hand, active materials, reconfigure response external stimulus, eliminate need for mechanical loads actuation systems. Thus, years, materials incorporated with shown promise remote light weight, programmable origami. this review, shape memory polymers (SMPs) alloys (SMAs), hydrogels, liquid crystal elastomers (LCEs), magnetic soft (MSMs), covalent adaptable network (CAN) polymers, their mechanisms, well how they utilized where these are applicable is discussed. Additionally, state‐of‐the‐art fabrication methods construct highlighted. The existing structural modeling strategies origami, constitutive models describe largest challenges future directions research summarized.

Language: Английский

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Origami With Rotational Symmetry: A Review on Their Mechanics and Design

Applied Mechanics Reviews, Journal Year: 2023, Volume and Issue: 75(5)

Published: Jan. 9, 2023

Abstract Origami has emerged as a powerful mechanism for designing functional foldable and deployable structures. Among various origami patterns, large class of exhibits rotational symmetry, which possesses the advantages elegant geometric shapes, axisymmetric contraction/expansion, omnidirectional deployability, etc. Due to these merits, with symmetry found widespread applications in engineering fields such emergency shelters, deformable wheels, medical stents, solar panels. To guide rational design origami-based structures devices, numerous works recent years have been devoted understanding designs mechanical behaviors rotationally symmetric origami. In this review, we classify into three categories according dimensional transitions between their deployed folded states three-dimensional three-dimensional, two-dimensional, two-dimensional two-dimensional. Based on categories, systematically review patterns during folding motions. We summarize existing theories numerical methods analyzing Also, potential directions future challenges mechanics are discussed. This can provide guidelines achieve more across wide range length scales.

Language: Английский

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Broadband low-frequency sound insulation of stiffened sandwich PFGM doubly-curved shells with positive, negative and zero Poisson's ratio cellular cores

Aerospace Science and Technology, Journal Year: 2024, Volume and Issue: 147, P. 109049 - 109049

Published: March 14, 2024

Language: Английский

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A programmable auxetic metamaterial with tunable crystal symmetry

International Journal of Mechanical Sciences, Journal Year: 2023, Volume and Issue: 249, P. 108249 - 108249

Published: Feb. 23, 2023

Artificially-structured materials with negative Poisson's ratio, also known as auxetics, have been the focus of numerous studies over past few decades. In this paper, using a group-theory-based symmetry reduction approach, and based on structure composed rotating rigid triangles, we propose new approach to designing auxetic metamaterials. These metamaterials can be fabricated by variety active or smart structural members that undergo different deformations when subjected external stimulations, e.g. temperature-sensitive in temperature-changing environment. Then, applying controlled stimuli initial structure, obtain desired symmetry-reduced configurations which facilitate programmability ratio. particular, demonstrate programmable metamaterial design starting an C3v symmetry, apply stimulus reduce configuration. The deformed configurations, belong groups C3, CS, C1, enable us program ratio metamaterial. We derive theoretical expressions for associated symmetries, are subsequently verified numerical proof-of-concept Kirigami models. anticipate structures will open up avenues research design.

Language: Английский

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Tristable property and the high stiffness analysis of Kresling pattern origami

International Journal of Mechanical Sciences, Journal Year: 2023, Volume and Issue: 256, P. 108515 - 108515

Published: June 3, 2023

Language: Английский

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