1
|
Wang X, Li X, Li Z, Wang Z, Zhai W. Superior Strength, Toughness, and Damage-Tolerance Observed in Microlattices of Aperiodic Unit Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307369. [PMID: 38183382 DOI: 10.1002/smll.202307369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/23/2023] [Indexed: 01/08/2024]
Abstract
Characterized by periodic cellular unit cells, microlattices offer exceptional potential as lightweight and robust materials. However, their inherent periodicity poses the risk of catastrophic global failure. To address this limitation, a novel approach, that is to introduce microlattices composed of aperiodic unit cells inspired by Einstein's tile, where the orientation of cells never repeats in the same orientation is proposed. Experiments and simulations are conducted to validate the concept by comparing compressive responses of the aperiodic microlattices with those of common periodic microlattices. Indeed, the microlattices exhibit stable and progressive compressive deformation, contrasting with catastrophic fracture of periodic structures. At the same relative density, the microlattices outperform the periodic ones, exhibiting fracture strain, energy absorption, crushing stress efficiency, and smoothness coefficients at least 830%, 300%, 130%, and 160% higher, respectively. These improvements can be attributed to aperiodicity, where diverse failure thresholds exist locally due to varying strut angles and contact modes during compression. This effectively prevents both global fracture and abrupt stress drops. Furthermore, the aperiodic microlattice exhibits good damage tolerance with excellent deformation recoverability, retaining 76% ultimate stress post-recovery at 30% compressive strain. Overall, a novel concept of adopting aperiodic cell arrangements to achieve damage-tolerant microlattice metamaterials is presented.
Collapse
Affiliation(s)
- Xinxin Wang
- School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, P. R. China
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Xinwei Li
- Faculty of Science, Agriculture, & Engineering, Newcastle University, Singapore, 567739, Singapore
| | - Zhendong Li
- School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, P. R. China
| | - Zhonggang Wang
- School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, P. R. China
| | - Wei Zhai
- Department of Mechanical Engineering, National University of Singapore, Singapore, 117575, Singapore
| |
Collapse
|
2
|
Lim DD, Lee S, Lee JH, Choi W, Gu GX. Mechanical metamaterials as broadband electromagnetic wave absorbers: investigating relationships between geometrical parameters and electromagnetic response. MATERIALS HORIZONS 2024; 11:2506-2516. [PMID: 38477233 DOI: 10.1039/d3mh01959d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
The utilization of low-density and robust mechanical metamaterials rises as a promising solution for multifunctional electromagnetic wave absorbers due to their structured porous structures, which facilitates impedance matching and structural absorption. However, the various geometrical parameters involved in constructing these metamaterials affect their electromagnetic response, necessitating a comprehensive understanding of underlying absorbing mechanisms. Through experimentally validated numerical analysis, this study delves into the influence of geometrical factors on the electromagnetic response of representative low-density, high strength mechanical metamaterials, namely octet-truss and octet-foam. By juxtaposing electromagnetic response under varying volume fractions, cell lengths, and multilayer configurations of octet-truss and octet-foam, distinct absorption mechanisms emerge as geometrical parameters evolve. These mechanisms encompass diminished reflection owing to porous structures, effective medium approximations within subwavelength limits, and transmission-driven or reflection-driven phenomena originating from the interplay of open- and closed-cell structures. Through analyses on these mechanical metamaterials, we demonstrate the viability of employing them as tunable yet scalable structures that are lightweight, robust, and broadband electromagnetic wave absorption.
Collapse
Affiliation(s)
- Dahyun Daniel Lim
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.
| | - Sangryun Lee
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.
- Division of Mechanical and Biomedical Engineering, Ewha Womans University, Seoul 03760, South Korea
| | - Jeong-Ho Lee
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.
| | - Wonjoon Choi
- School of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Grace X Gu
- Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA.
| |
Collapse
|
3
|
Qian Y, Wu Z, Lv X, Huang M, Rao L, Wang L, Lai Y, Zhang J, Che R. Fixed-Point Atomic Regulation Engineered Low-Thickness Wideband Microwave Absorption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401878. [PMID: 38742982 DOI: 10.1002/smll.202401878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 04/29/2024] [Indexed: 05/16/2024]
Abstract
Atomic doping is widely employed to fine-tune crystal structures, energy band structures, and the corresponding electrical properties. However, due to the difficulty in precisely regulating doping sites and concentrations, establishing a relationship between electricity properties and doping becomes a huge challenge. In this work, a modulation strategy on A-site cation dopant into spinel-phase metal sulfide Co9S8 lattice via Fe and Ni elements is developed to improve the microwave absorption (MA) properties. At the atomic scale, accurately controlling doped sites can introduce local lattice distortions and strain concentration. Tunned electron energy redistribution of the doped Co9S8 strengthens electron interactions, ultimately enhancing the high-frequency dielectric polarization (ɛ' from 10.5 to 12.5 at 12 GHz). For the Fe-doped Co9S8, the effective absorption bandwidth (EAB) at 1.7 mm increases by 5%, and the minimum reflection loss (RLmin) improves by 26% (EAB = 5.8 GHz, RLmin = -46 dB). The methodology of atomic-scale fixed-point doping presents a promising avenue for customizing the dielectric properties of nanomaterials, imparting invaluable insights for the design of cutting-edge high-performance microwave absorption materials.
Collapse
Affiliation(s)
- Yuetong Qian
- Materials Genome Institute, Shanghai University, Shanghai, 200444, China
| | - Zhengchen Wu
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
| | - Xiaowei Lv
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
| | - Mengqiu Huang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
| | - Longjun Rao
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
| | - Lei Wang
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
- School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China
| | - Yuxiang Lai
- Pico Electron Microscopy Center, Innovation Institute for Ocean Materials Characterization, Center for Advanced Studies in Precision Instruments, Hainan University, Haikou, 570228, China
| | - Jincang Zhang
- Materials Genome Institute, Shanghai University, Shanghai, 200444, China
- Zhejiang Laboratory, Hangzhou, 311100, P. R. China
| | - Renchao Che
- Laboratory of Advanced Materials, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Academy for Engineering & Technology, Fudan University, Shanghai, 200438, China
- Zhejiang Laboratory, Hangzhou, 311100, P. R. China
- College of Physics, Donghua University, Shanghai, 201620, China
| |
Collapse
|
4
|
Liu X, Zhou J, Xue Y, Lu X. Structural Engineering of Hierarchical Magnetic/Carbon Nanocomposites via In Situ Growth for High-Efficient Electromagnetic Wave Absorption. NANO-MICRO LETTERS 2024; 16:174. [PMID: 38619635 PMCID: PMC11018581 DOI: 10.1007/s40820-024-01396-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 03/04/2024] [Indexed: 04/16/2024]
Abstract
Materials exhibiting high-performance electromagnetic wave absorption have garnered considerable scientific and technological attention, yet encounter significant challenges. Developing new materials and innovative structural design concepts is crucial for expanding the application field of electromagnetic wave absorption. Particularly, hierarchical structure engineering has emerged as a promising approach to enhance the physical and chemical properties of materials, providing immense potential for creating versatile electromagnetic wave absorption materials. Herein, an exceptional multi-dimensional hierarchical structure was meticulously devised, unleashing the full microwave attenuation capabilities through in situ growth, self-reduction, and multi-heterogeneous interface integration. The hierarchical structure features a three-dimensional carbon framework, where magnetic nanoparticles grow in situ on the carbon skeleton, creating a necklace-like structure. Furthermore, magnetic nanosheets assemble within this framework. Enhanced impedance matching was achieved by precisely adjusting component proportions, and intelligent integration of diverse interfaces bolstered dielectric polarization. The obtain Fe3O4-Fe nanoparticles/carbon nanofibers/Al-Fe3O4-Fe nanosheets composites demonstrated outstanding performance with a minimum reflection loss (RLmin) value of - 59.3 dB and an effective absorption bandwidth (RL ≤ - 10 dB) extending up to 5.6 GHz at 2.2 mm. These notable accomplishments offer fresh insights into the precision design of high-efficient electromagnetic wave absorption materials.
Collapse
Affiliation(s)
- Xianyuan Liu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China
| | - Jinman Zhou
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China
| | - Ying Xue
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China
| | - Xianyong Lu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing, 100191, People's Republic of China.
| |
Collapse
|
5
|
Meng X, Qiao J, Liu J, Wu L, Wang Z, Wang F. Bioinspired Hollow/Hollow Architecture with Flourishing Dielectric Properties for Efficient Electromagnetic Energy Reclamation Device. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307647. [PMID: 37890470 DOI: 10.1002/smll.202307647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/12/2023] [Indexed: 10/29/2023]
Abstract
The exploitation of advanced electromagnetic functional devices is perceived as the effective prescription to deal with environmental contamination and energy deficiency. From the perspective of observing and imitating nature, pine branch-like zirconium dioxide/cobalt nanotubes@nitrogen-doped carbon nanotubes are synthesized victoriously through maneuverable electrospinning process and follow-up thermal treatments. In particular, introducing carbon nanotubes on the surface of hollow nanofibers to construct hierarchical architecture vastly promoted the material's dielectric properties by significantly augmenting specific surface area, generating abundant heterogeneous interfaces, and inducing the formation of defects. Supplemented by the synergistic effect between each constituent, ultra-strong attenuation capacity and perfect impedance matching characteristics are implemented simultaneously, and jointly made contributions to the splendid microwave absorption performance with a minimum reflection loss of -67.9 dB at 1.5 mm. Moreover, this fibrous absorber also exhibited promising potential to be utilized as a green and efficient electromagnetic interference shielding material when the filler loading is enhanced. Therefore, this design philosophy is destined to inspire the future development of energy conversion and storage devices, and provide theoretical direction for the creation of sophisticated electromagnetic functional materials.
Collapse
Affiliation(s)
- Xiangwei Meng
- School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China
| | - Jing Qiao
- School of Mechanical Engineering, Shandong University, Jinan, 250061, P. R. China
| | - Jiurong Liu
- School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China
| | - Lili Wu
- School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China
| | - Zhou Wang
- School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China
| | - Fenglong Wang
- School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China
- Shenzhen Research Institute of Shandong University, A301 Virtual University Park in South District of Nanshan High-tech Zone, Shenzhen, 518057, P. R. China
| |
Collapse
|
6
|
Cai L, Jiang H, Pan F, Liang H, Shi Y, Wang X, Cheng J, Yang Y, Zhang X, Shi Z, Wu H, Lu W. Linkage Effect Induced by Hierarchical Architecture in Magnetic MXene-based Microwave Absorber. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2306698. [PMID: 37840390 DOI: 10.1002/smll.202306698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/25/2023] [Indexed: 10/17/2023]
Abstract
Hierarchical architecture engineering is desirable in integrating the physical-chemical behaviors and macroscopic properties of materials, which present great potential for developing multifunctional microwave absorption materials. However, the intrinsic mechanisms and correlation conditions among cellular units have not been revealed, which are insufficient to maximize the fusion of superior microwave absorption (MA) and derived multifunctionality. Herein, based on three models (disordered structure, porous structure, lamellar structure) of structural units, a range of MXene-aerogels with variable constructions are fabricated by a top-down ice template method. The aerogel with lamellar structure with a density of only 0.015 g cm-3 exhibits the best MA performance (minimum reflection loss: -53.87 dB, effective absorption bandwidth:6.84 GHz) at a 6 wt.% filling ratio, which is preferred over alternative aerogels with variable configurations. This work elucidates the relationship between the hierarchical architecture and the superior MA performance. Further, the MXene/CoNi Composite aerogel with lamellar structure exhibits >90% compression stretch after 1000 cycles, excellent compressive properties, and elasticity, as well as high hydrophobicity and thermal insulation properties, broadening the versatility of MXene-based aerogel applications. In short, through precise microstructure design, this work provides a conceptually novel strategy to realize the integration of electromagnetic stealth, thermal insulation, and load-bearing capability simultaneously.
Collapse
Affiliation(s)
- Lei Cai
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Haojie Jiang
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Fei Pan
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Hongsheng Liang
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Yuyang Shi
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Xiao Wang
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Jie Cheng
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Yang Yang
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Xiang Zhang
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Zhong Shi
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai, 201804, P. R. China
| | - Hongjing Wu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Wei Lu
- Shanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai, 201804, P. R. China
| |
Collapse
|
7
|
Ma Z, Yang K, Li D, Liu H, Hui S, Jiang Y, Li S, Li Y, Yang W, Wu H, Hou Y. The Electron Migration Polarization Boosting Electromagnetic Wave Absorption Based on Ce Atoms Modulated yolk@shell Fe x N@NGC. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2314233. [PMID: 38380795 DOI: 10.1002/adma.202314233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/19/2024] [Indexed: 02/22/2024]
Abstract
The electron migration polarization is considered as a promising approach to optimize electromagnetic waves (EMW) dissipation. However, it is still difficult to realize well-controlled electron migration and elucidate the related EMW loss mechanisms for current researches. Herein, a novel Fex N@NGC/Ce system to construct an effective electron migration model based on the electron leaps among the 4f/5d/6s orbitals of Ce ions is explored. In Fe4 N@NGC/CeSA+Cs+NPs , Ce single-atoms (SA) mainly represent a +3 valence state, which can feed the electrons to Ce4+ of clusters (Cs) and CeO2 nanoparticles (NPs) through a conductive network under EMW, leading to the electron migration polarization. Such electron migration loss combined with excellent magnetic loss provided by Fe4 N core, results in the optimal EMW attenuation performance with a minimum reflection loss exceeds -85.1 dB and a broadened absorption bandwidth up to 7.5 GHz at 1.5 mm. This study clarifies the in-depth relationship between electron migration polarization and EMW dissipation, providing profound insights into developing well-coordinated magnetic-dielectric nanocomposites for EMW absorption engineering.
Collapse
Affiliation(s)
- Zhenhui Ma
- Department of Physics, Beijing Technology and Business University, Beijing, 100048, China
| | - Ke Yang
- Department of Physics, Beijing Technology and Business University, Beijing, 100048, China
| | - Da Li
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, 518172, China
| | - Hu Liu
- School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology, Xi'an, 710055, China
| | - Shengchong Hui
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, School of Physical Science and Technology Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yuying Jiang
- Department of Physics, Beijing Technology and Business University, Beijing, 100048, China
| | - Siyuan Li
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | - Yiming Li
- Department of Physics, Beijing Technology and Business University, Beijing, 100048, China
| | - Wang Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing, 102249, China
| | - Hongjing Wu
- MOE Key Laboratory of Material Physics and Chemistry under Extraordinary, School of Physical Science and Technology Northwestern Polytechnical University, Xi'an, 710072, China
| | - Yanglong Hou
- Beijing Key Laboratory for Magnetoelectric Materials and Devices, School of Materials Science and Engineering, Peking University, Beijing, 100871, China
- School of Materials, Shenzhen Campus of Sun Yat-Sen University, Shenzhen, 518107, China
| |
Collapse
|
8
|
Chang L, Liu X, Luo J, Lee CY, Zhang J, Fan X, Zhang W. Physiochemical Coupled Dynamic Nanosphere Lithography Enabling Multiple Metastructures from Single Mask. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2310469. [PMID: 38193751 DOI: 10.1002/adma.202310469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/14/2023] [Indexed: 01/10/2024]
Abstract
Metastructures are widely used in photonic devices, energy conversion, and biomedical applications. However, to fabricate multiple patterns continuously in single etching protocol with highly tunable photonic properties is challenging. Here, a simple and robust dynamic nanosphere lithography is proposed by inserting a spacer between the nanosphere assembly and the wafer. The nanosphere diameter decrease and uneven penetration of the spacer during etching lead to a dynamic masking process. Coupled anisotropic physical ion sputtering and ricocheting with isotropic chemical radical etching achieve highly tunable structures with various 3D patterns continuously forming through a single etching process. Specifically, the nanosphere diameters define the periodicity, the etched spacer forms the upper parts, and the wafer forms the lower parts. Each part of the structure is highly tunable through changing nanosphere diameter, spacer thickness, and etch conditions. Using this protocol, numerous structures of varying sizes including nanomushrooms, nanocones, nanopencils, and nanoneedles with diverse shapes are realized as proof of concepts. The broadband antireflection ability of the nanostructures and their use in surface-enhanced Raman spectroscopy are also demonstrated for practical application. This method substantially simplifies the fabrication procedure of various metastructures, paving the way for its application in multiple disciplines especially in photonic devices.
Collapse
Affiliation(s)
- Lin Chang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaohong Liu
- National University of Singapore (Chongqing) Research Institute, Chongqing, 401123, China
| | - Jie Luo
- College of Advanced Interdisciplinary Studies & Hunan Provincial, Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha, 410073, China
| | - Chong-Yew Lee
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, Penang, 11800, Malaysia
| | - Jianfa Zhang
- College of Advanced Interdisciplinary Studies & Hunan Provincial, Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha, 410073, China
| | - Xing Fan
- College of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044, China
| | - Wei Zhang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
9
|
Wang H, Cheng L, Yu J, Si Y, Ding B. Biomimetic Bouligand chiral fibers array enables strong and superelastic ceramic aerogels. Nat Commun 2024; 15:336. [PMID: 38184664 PMCID: PMC10771491 DOI: 10.1038/s41467-023-44657-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 12/22/2023] [Indexed: 01/08/2024] Open
Abstract
Ceramic aerogels are often used when thermal insulation materials are desired; however, they are still plagued by poor mechanical stability under thermal shock. Here, inspired by the dactyl clubs of mantis shrimp found in nature, which form by directed assembly into hierarchical, chiral and Bouligand (twisted plywood) structure exhibiting superior mechanical properties, we present a compositional and structural engineering strategy to develop strong, superelastic and fatigue resistance ceramic aerogels with chiral fibers array resembling Bouligand architecture. Benefiting from the stress dissipation, crack torsion and mechanical reinforcement of micro-/nano-scale Bouligand array, the tensile strength of these aerogels (170.38 MPa) is between one and two orders of magnitude greater than that of state-of-the-art nanofibrous aerogels. In addition, the developed aerogels feature low density and thermal conductivity, good compressive properties with rapid recovery from 80 % strain, and thermal stability up to 1200 °C, making them ideal for thermal insulation applications.
Collapse
Affiliation(s)
- Hongxing Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China
| | - Longdi Cheng
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China
| | - Jianyong Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China
- Innovation Center for Textile Science and Technology, Donghua University, 200051, Shanghai, China
| | - Yang Si
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China.
- Innovation Center for Textile Science and Technology, Donghua University, 200051, Shanghai, China.
| | - Bin Ding
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Textiles, Donghua University, 201620, Shanghai, China.
- Innovation Center for Textile Science and Technology, Donghua University, 200051, Shanghai, China.
| |
Collapse
|