Additive manufacturing, Journal Year: 2023, Volume and Issue: 69, P. 103532 - 103532
Published: March 30, 2023
Language: Английский
Advanced Materials, Journal Year: 2021, Volume and Issue: 33(45)
Published: Sept. 24, 2021
Liquid crystal elastomers (LCEs) are a class of soft active materials increasing interest, because their excellent actuation and optical performances. While LCEs show biomimetic mechanical properties (e.g., elastic modulus strength) that can be matched with those biological tissues, biointegrated applications have been rarely explored, in part, due to high temperatures (typically above 60 °C) low biaxial performances strain typically below 10%). Here, unique mechanics-guided designs fabrication schemes LCE metamaterials developed allow access unprecedented (-53%) coefficient thermal expansion (-33 125 ppm K-1 ), significantly surpassing -20% -5950 ) reported previously. A low-temperature synthesis method use optimized composition ratios enables offer reasonably stresses/strains at substantially reduced temperature (46 °C). Such biocompatible integrated medical dressing develop breathable, shrinkable, hemostatic patch as means noninvasive treatment. In vivo animal experiments skin repair both round cross-shaped wounds demonstrate advantages the over conventional strategies suturing) accelerating regeneration, while avoiding scar keloid generation.
Language: Английский
Citations
171
Science Advances, Journal Year: 2022, Volume and Issue: 8(11)
Published: March 16, 2022
Elastic stretchability and function density represent two key figures of merits for stretchable inorganic electronics. Various design strategies have been reported to provide both high levels density, but the densities are mostly below 80%. While stacked device layout can overcome this limitation, soft elastomers used in previous studies could highly restrict deformation interconnects. Here, we introduce multilayer network materials as a general platform incorporate individual components interconnects, without posing any essential constraint their deformations. Quantitative analyses show substantial enhancement (e.g., by ~7.5 times) elastic serpentine interconnects compared that based on elastomers. The proposed strategy allows demonstration miniaturized electronic system (11 mm 10 mm), with moderate (~20%) an unprecedented areal coverage (~110%), which serve compass display, somatosensory mouse, physiological-signal monitor.
Language: Английский
Citations
152
Advanced Materials, Journal Year: 2023, Volume and Issue: 36(4)
Published: Aug. 6, 2023
Abstract The field of flexible electronics is a crucial driver technological advancement, with strong connection to human life and unique role in various areas such as wearable devices healthcare. Consequently, there an urgent demand for energy storage (FESDs) cater the needs forms products. FESDs can be classified into three categories based on spatial dimension, all which share features excellent electrochemical performance, reliable safety, superb flexibility. In this review, application scenarios are introduced main representative applied disparate fields summarized first. More specifically, it focuses types matched from both structural material aspects. Finally, challenges that hinder practical views current barriers presented.
Language: Английский
Citations
141
Progress in Materials Science, Journal Year: 2022, Volume and Issue: 131, P. 101021 - 101021
Published: Sept. 21, 2022
The rapid progress of advanced manufacturing, multidisciplinary integration and artificial intelligence has ushered in a new era technological development the design lightweight, well-integrated, multifunctional, intelligent, flexible biomimetic materials structures. traditional approach structural research poses several intrinsic limitations on practical performance devices instruments harsh industrial environments, due to factors such as disconnection between low efficiency manufacture complex structures, reduced actual mechanical integrity reliability manufactured structures compared theoretical values obtained from design, insufficient level multifunctional integration, excessive economic cost. In addition, incorporated equipment often need withstand extreme service it is increasingly important further integrate manufacture, function, evaluation application provide technical bases for optimizing their fabrication. view above, authors propose paradigm "mechanostructures," which aims achieve target responses environments by integrating manufacturing evaluation. By designing novel based desired static dynamic considering behavior throughout whole deformation process, field "mechanostructures" pursues an application-oriented approach. As typical example mechanostructures, lightweight lattice with high stiffness, strength, impact resistance, energy absorption capacity, shock wave attenuation noise reduction show great potential applications aerospace, transportation, defense, biomedical, energy, machinery, other fields. this respect, metastructures inspired polycrystalline microstructures presented, starting discussion properties conflicts, demonstrating scientific merits innovative manipulation properties, elaboration underlying physical mechanisms.
Language: Английский
Citations
112
Biosensors, Journal Year: 2022, Volume and Issue: 12(2), P. 55 - 55
Published: Jan. 20, 2022
Since it was reported in 2014, laser-induced graphene (LIG) has received growing attention for its fast speed, non-mask, and low-cost customizable preparation, shown potential the fields of wearable electronics biological sensors that require high flexibility versatility. Laser-induced been successfully prepared on various substrates with contents from carbon sources, e.g., organic films, plants, textiles, papers. This paper reviews recent progress state-of-the-art preparations applications LIG including mechanical sensors, temperature humidity electrochemical electrophysiological heaters, actuators. The achievements based devices detecting diverse bio-signal, serving as monitoring human motions, energy storage, heaters are highlighted here, referring to advantages flexible designability, excellent electrical conductivity, choice substrates. Finally, we provide some perspectives remaining challenges opportunities LIG.
Language: Английский
Citations
100
International Journal of Extreme Manufacturing, Journal Year: 2023, Volume and Issue: 5(4), P. 042003 - 042003
Published: July 11, 2023
Highlights Mechanical design methods and theoretical models of soft hard mechanical metamaterials are reviewed based on deformation mechanisms. Multifunctional benefits limitations reviewed, comprehensive performances optimization categorized. Industrial applications perspectives challenges discussed.
Language: Английский
Citations
80
Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11137 - 11189
Published: Sept. 7, 2023
Architected flexible electronic devices with rationally designed 3D geometries have found essential applications in biology, medicine, therapeutics, sensing/imaging, energy, robotics, and daily healthcare. Mechanically-guided assembly methods, exploiting mechanics principles of materials structures to transform planar fabricated using mature semiconductor techniques into architected ones, are promising routes such devices. Here, we comprehensively review mechanically-guided methods for electronics. Mainstream classified discussed on the basis their fundamental deformation modes (i.e., rolling, folding, curving, buckling). Diverse interconnects device forms then summarized, which correspond two key components an device. Afterward, structure-induced functionalities highlighted provide guidelines function-driven structural designs electronics, followed by a collective summary resulting applications. Finally, conclusions outlooks given, covering achieve extreme deformations dimensions, inverse design encapsulation strategies as well perspectives future
Language: Английский
Citations
68
Composites Part B Engineering, Journal Year: 2024, Volume and Issue: 275, P. 111284 - 111284
Published: Feb. 5, 2024
Language: Английский
Citations
22
Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 32(6)
Published: Oct. 27, 2021
Abstract The tension‐torsion coupling metamaterial (TTCM) exhibits torsional deformation while stretching, with the degree of freedom exceeding Cauchy elasticity. However, TTCM suffers from limitations weak effect (TTCE), narrow domain, and lack adaptability. To address these limitations, mechanical pixel (MP) array design, helical microstructure, 4D printing are introduced into in this study, providing new strategies to exploit potential TTCM. developed MP tunability, programmability, reconfigurability behaviors (stress–strain relationship, TTCE). (PMM) uncoupled between MPs is obtained, which greatly enriches design diversity configurations maintainability. application prospects PMM for information encryptions, kinematics controllers, soft robots, buffer devices demonstrated. More interestingly, an egg falling on at height ≈1 m remains intact due excellent protection performance PMM.
Language: Английский
Citations
69
Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)
Published: Jan. 26, 2022
Abstract Concepts that draw inspiration from soft biological tissues have enabled significant advances in creating artificial materials for a range of applications, such as dry adhesives, tissue engineering, biointegrated electronics, muscles, and robots. Many tissues, represented by exhibit directionally dependent mechanical electrical properties. However, equipping synthetic with tissue-like anisotropies remains challenging. Here, we present the bioinspired concepts, design principles, numerical modeling, experimental demonstrations elastomer composites programmed anisotropies, well their integrations active functionalities. Mechanically assembled, 3D structures polyimide serve skeletons to offer anisotropic, nonlinear properties, crumpled conductive surfaces provide anisotropic which can be used construct bioelectronic devices. Finite element analyses quantitatively capture key aspects govern composites, providing powerful tool. Incorporation thermally responsive polycaprolactone into allows development an material mimic adaptive behaviors skeleton muscles at relaxation contraction states. Furthermore, fabrication process is compatible dielectric actuators, indicating potential applications humanoid
Language: Английский
Citations
66