International Journal of Smart and Nano Materials最新文献_第7页

Localization of elastic waves in one-dimensional detuned phononic crystals with flexoelectric effect 具有挠性电效应的一维失谐声子晶体中弹性波的局域化

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2069875

Cheng Shen, Yifan Kong, T. J. Lu, Shasha Yang

{"title":"Localization of elastic waves in one-dimensional detuned phononic crystals with flexoelectric effect","authors":"Cheng Shen, Yifan Kong, T. J. Lu, Shasha Yang","doi":"10.1080/19475411.2022.2069875","DOIUrl":"https://doi.org/10.1080/19475411.2022.2069875","url":null,"abstract":"ABSTRACT Although forbidden band effect in perfectly periodic phononic crystals (PC) is very attractive, random disordered (i.e. detuning) phenomenon is inevitable in engineering processing, thus exploring the effect of detuning on the wave characteristics of PC becomes a necessity. In this study, fundamental governing equations and boundary conditions are derived from the principle of virtual work. Wave characteristics and localization factor of one-dimensional (1D) detuned nano-PC are investigated based on the transfer matrix method, with flexoelectric effect duly accounted for. Subsequently, with nano-PC taken for illustration, forbidden band properties and localization factor of 1D elastic waves in harmonic and detuned states are systematically characterized. It is demonstrated that localization factor can characterize the energy band structure of 1D PC perfectly. Flexoelectric effect tends to widen the width of forbidden band with increasing detuning, and detuning is linearly related to the bandwidth. The forbidden band is more sensitive to flexoelectric coefficient detuning than thickness detuning. The research results provide useful theoretical guidance for designing high-frequency nanoscaled devices with the function of filtering based on band gap effect of nano-PC. Graphical abstract","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"244 - 262"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46012906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Machine Learning Based Quantitative Damage Monitoring of Composite Structure 基于机器学习的复合材料结构损伤定量监测

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2054878

X. Qing, Yunlai Liao, Yihan Wang, Binqiang Chen, Fanghong Zhang, Yishou Wang

{"title":"Machine Learning Based Quantitative Damage Monitoring of Composite Structure","authors":"X. Qing, Yunlai Liao, Yihan Wang, Binqiang Chen, Fanghong Zhang, Yishou Wang","doi":"10.1080/19475411.2022.2054878","DOIUrl":"https://doi.org/10.1080/19475411.2022.2054878","url":null,"abstract":"ABSTRACT Composite materials have been widely used in many industries due to their excellent mechanical properties. It is difficult to analyze the integrity and durability of composite structures because of their own characteristics and the complexity of load and environments. Structural health monitoring (SHM) based on built-in sensor networks has been widely evaluated as a method to improve the safety and reliability of composite structures and reduce the operational cost. With the rapid development of machine learning, a large number of machine learning algorithms have been applied in many disciplines, and also are being applied in the field of SHM to avoid the limitations resulting from the need of physical models. In this paper, the damage monitoring technologies often used for composite structures are briefly outlined, and the applications of machine learning in damage monitoring of composite structures are concisely reviewed. Then, challenges and solutions for quantitative damage monitoring of composite structures based on machine learning are discussed, focusing on the complete acquisition of monitoring data, deep analysis of the correlation between sensor signal eigenvalues and composite structure states, and quantitative intelligent identification of composite delamination damage. Finally, the development trend of machine learning-based SHM for composite structures is discussed.","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"167 - 202"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44584561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

Geometric nonlinear analysis of large rotation behavior of a curved SWCNT 弯曲swcnts大旋转特性的几何非线性分析

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2061077

Prasad Dharap, Satish Nagarajaiah, Zhiling Li

{"title":"Geometric nonlinear analysis of large rotation behavior of a curved SWCNT","authors":"Prasad Dharap, Satish Nagarajaiah, Zhiling Li","doi":"10.1080/19475411.2022.2061077","DOIUrl":"https://doi.org/10.1080/19475411.2022.2061077","url":null,"abstract":"ABSTRACT Nanotubes form clusters and are found in curved bundles in nanotube films and nanocomposites. Separation phenomenon is suspected to occur in these curved bundles. In this study, the deformation of a single-wall carbon nanotube (SWCNT) interacting with curved bundle nanotubes is analyzed. It is assumed that the bundle is rigid and only van der Waals force acts between the nanotube and the bundle of nanotubes. A new method of modeling geometric nonlinear behavior of the nanotube due to finite rotation and the corresponding van der Waals force is developed using co-rotational finite element method (CFEM) formulation, combined with small deformation beam theory, with the inclusion of axial force. Current developed CFEM method overcomes the limitation of linear Finite Element Method (FEM) formulation regarding large rotations and deformations of carbon nanotubes. This study provides a numerical tool to identify the critical curvature influence on the interaction of carbon nanotubes due to van der Waals forces and can provide more insight into studying irregularities in the electronic transport properties of adsorbed nanotubes in nanocomposites. Graphical abstract","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"218 - 231"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47194986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of thermal treatment on electronic properties of inkjet-printed zinc oxide semiconductor 热处理对喷墨印刷氧化锌半导体电子性能的影响

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2084172

V. Tran, Yuefan Wei, Hejun Du

{"title":"Influence of thermal treatment on electronic properties of inkjet-printed zinc oxide semiconductor","authors":"V. Tran, Yuefan Wei, Hejun Du","doi":"10.1080/19475411.2022.2084172","DOIUrl":"https://doi.org/10.1080/19475411.2022.2084172","url":null,"abstract":"ABSTRACT Additive manufacturing of electronic devices using inkjet printing provides a potential alternative approach in substitution for conventional electronic fabrication processes. However, the complex nature of inkjet printing involves the liquid deposition and film formation from the vaporization of solvent, which makes it different from film created by conventional deposition methods. Inkjet printing of zinc oxide (ZnO), which is a widely utilized semiconductor, produces polycrystalline film composed of nano-size grains, which could significantly influence the properties of printed film. In this study, low-temperature annealing was employed to treat inkjet-printed ZnO for UV photodetection application, and its influence on electrical properties was studied. Band bending was characterized using the Mott-Schottky plot which examines the charge distribution of the films. It is found that the annealing of inkjet-printed polycrystalline ZnO film has improved its electrical properties, which could be attributed to the reduction of band bending due to the merging of grains. The treatment also helps to reduce impurities of the film, such as zinc hydroxide complexes, which are common for solution-derived films. Hence, the study could pay the way for the improvement of electrical properties of inkjet-printed functional materials. Graphical abstract","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"330 - 345"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44841003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Regulation mechanism for the formation and microwave absorbing performance of CNT/CoFe-MOF derived hierarchical composite CNT/CoFe-MOF分级复合材料的形成及其微波吸收性能的调控机制

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2070681

Jinxiao Wang, Jianfeng Yang, Jun Yang

{"title":"Regulation mechanism for the formation and microwave absorbing performance of CNT/CoFe-MOF derived hierarchical composite","authors":"Jinxiao Wang, Jianfeng Yang, Jun Yang","doi":"10.1080/19475411.2022.2070681","DOIUrl":"https://doi.org/10.1080/19475411.2022.2070681","url":null,"abstract":"ABSTRACT The structure design, performance analysis, and process optimization of CNT/MOF-derived hierarchical composite play an important role in the development of high-performance microwave absorbing materials. Herein, the preparation, morphology evolution, and electromagnetic wave absorption mechanism of CNT/MOF-derived hierarchical composite were systematically investigated. The regulation mechanism was revealed by studying the changes in the morphological characteristics, electromagnetic properties, and microwave absorbing performance of CNT/MOF-derived hierarchical composite under different process parameters. The results show that the morphological characteristics and interface bonding between CNT and MOF have a great impact on the absorptive capacity. The composite with composition of 0.28Co/0.26Fe has a maximum absorption of −46 dB at 8.6 GHz and a thickness of 4 mm. In addition, the absorption band with reflection loss values of less than −20 dB can be operated with this thickness between 7.15 and 10.18 GHz, showing excellent absorbing ability and electromagnetic wave bandwidth. The regulation mechanism of CNT/MOF-derived hierarchical composite mainly depends on the effect of Lorentz force, the ion disorder of CoO-Fe2O3 heterojunction, and the spin polarization mechanism of free electrons. This study further improves the corresponding theoretical basis and new design principles, which provides technical support for the development of high-performance absorbing materials. Graphical abstarct","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"273 - 292"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41389318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Variable stiffness wires based on magnetorheological liquid metals 基于磁流变液态金属的变刚度线材

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2065703

Xiaoping Zhou, Jian Shu, Hu Jin, Hongtai Ren, G. Ma, Ningyuan Gong, Du-an Ge, Juan Shi, Shiyang Tang, Guolin Yun, Hongda Lu, Shuai Dong, Xiangpeng Li, Shiwu Zhang, Weihua Li

{"title":"Variable stiffness wires based on magnetorheological liquid metals","authors":"Xiaoping Zhou, Jian Shu, Hu Jin, Hongtai Ren, G. Ma, Ningyuan Gong, Du-an Ge, Juan Shi, Shiyang Tang, Guolin Yun, Hongda Lu, Shuai Dong, Xiangpeng Li, Shiwu Zhang, Weihua Li","doi":"10.1080/19475411.2022.2065703","DOIUrl":"https://doi.org/10.1080/19475411.2022.2065703","url":null,"abstract":"ABSTRACT Magnetorheological fluid (MRF) has shown its great potential in the development of large mechanical devices, such as dampers, shock absorbers, rotary brakes, clutches, and prosthetic joints. Recently, more research focus has been invested on using MRF to develop soft, stretchable, and miniaturized devices with variable stiffness for realizing functionalities that cannot be achieved using solid smart materials. Here, based on liquid metal magnetoactive slurries (LMMS), a variable stiffness wire with excellent electrical conductivity is demonstrated. Without exposure to a magnetic field, the LMMS wire has an extremely low stiffness, and can be easily stretched while maintaining an excellent electrical conductivity. When applying a magnetic field, the wire becomes much stiffer and can retain its shape even under a load. The combination of properties of flexibility, high electrical conductivity, and variable stiffness of the wire is harnessed to make a flexible gripper that can grasp objects of various shapes. Moreover, by using gallium instead of its liquid metal alloys, the tunable stiffness range of the LMMS wire is significantly enhanced and can be controlled using both external magnetic fields and temperature-induced phase change. The presented LMMS wire has the potential to be applied in flexible electronics, soft robotics and so on. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"232 - 243"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47928775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Notch Flexure as Kirigami Cut for Tunable Mechanical Stretchability towards Metamaterial Application 缺口弯曲作为基利伽米切割可调机械拉伸性能在超材料中的应用

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2059589

Yanqi Yin, Yang Yu, Bo Li, Guimin Chen

引用次数: 4

TiNiHf/SiO2/Si shape memory film composites for bi-directional micro actuation 用于双向微驱动的tinhf /SiO2/Si形状记忆膜复合材料

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2071352

Sabrina M. Curtis, M. Sielenkämper, Gowtham Arivanandhan, Duygu Dengiz, Zixiong Li, J. Jetter, Lisa Hanke, L. Bumke, E. Quandt, S. Wulfinghoff, M. Kohl

{"title":"TiNiHf/SiO2/Si shape memory film composites for bi-directional micro actuation","authors":"Sabrina M. Curtis, M. Sielenkämper, Gowtham Arivanandhan, Duygu Dengiz, Zixiong Li, J. Jetter, Lisa Hanke, L. Bumke, E. Quandt, S. Wulfinghoff, M. Kohl","doi":"10.1080/19475411.2022.2071352","DOIUrl":"https://doi.org/10.1080/19475411.2022.2071352","url":null,"abstract":"ABSTRACT The martensitic phase transformation in Ti40.4Ni48Hf11.6 shape memory alloys is leveraged for bi-directional actuation with TiNiHf/SiO2/Si composites. The shape memory properties of magnetron sputtered Ti40.4Ni48Hf11.6 films annealed at 635°C – 5 min are influenced by film thickness and the underlying substrate. Decreasing TiNiHf film thickness from 21 μm to 110 nm results in the reduction of all characteristic transformation temperatures until a critical thickness is reached. Particularly, Ti40.4Ni48Hf11.6 thin films as low as 220 nm show transformations above room temperature when deposited on SiO2 buffer layer, which is of great interest in nano-actuation. In comparison, 220 nm films on Si substrates are austenitic at room temperature, and thus not suitable for actuation. Thermal fatigue tests on TiNiHf/SiO2/Si bimorphs demonstrate better functional fatigue characteristics than freestanding films, with an average reduction of 15°C after 125 cycles, with temperature stabilization subsequently. Experimental bi-directional actuation results are promising in the development of bistable actuators within a PMMA/TiNiHf/Si trimorph composite, whereby the additional PMMA layer undergoes a glass transition at 105°C. With the aid of constitutive modeling, a route is elaborated on how bistable actuation can be achieved at micro- to nanoscales by showing favorable thickness combinations of PMMA/TiNiHf/Si composite. Graphical abstract","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"293 - 314"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41686324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Properties and mechanism of ionic liquid/silicone oil based magnetorheological fluids 离子液体/硅油基磁流变液的性能及机理

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-04-03 DOI: 10.1080/19475411.2022.2069876

Yu Tong, P. Zhao, Xiaoguang Li, N. Ma, Xufeng Dong, Chenguang Niu, Zhanjun Wu, M. Qi

{"title":"Properties and mechanism of ionic liquid/silicone oil based magnetorheological fluids","authors":"Yu Tong, P. Zhao, Xiaoguang Li, N. Ma, Xufeng Dong, Chenguang Niu, Zhanjun Wu, M. Qi","doi":"10.1080/19475411.2022.2069876","DOIUrl":"https://doi.org/10.1080/19475411.2022.2069876","url":null,"abstract":"ABSTRACT A magnetorheological fluid (MRF) is a smart composite suspension composed of nonmagnetic liquid and soft magnetic particles. Carrier fluids can considerably influence the performance of MRFs; therefore, to investigate the effect of carrier fluids on MRFs, an SO/IL-MRF was prepared by mixing an ionic liquid (IL) with silicone oil (SO) in this study. Three types of MRF samples were prepared for experiments (pure SO, pure IL, and SO/IL). According to the experimental results, the SO/IL-MRF has better sedimentation stability than those based on pure SO and pure IL. Further, three methods were used to determine the shear yield stresses of the MRFs. The SO/IL-MRF achieved a higher shear yield stress than those of the other two because a network structure is formed between the ionic fragments and the molecular chains of the SO in the SO/IL-MRF. This increases the movement resistance of the particles in the carrier fluid, and it is unlike the mechanism of the IL-enhanced MRF. This work provides new ideas for improving the MRF performance. Graphical abstractSO/IL-MRF prepared by mixing ionic liquid with silicone oil exhibited better sedimentation stability and higher shear yield stress. This is because a network structure is formed between the ionic fragments and the molecular chains of the silicone oil, which increases the movement resistance of the particles in the carrier fluid","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"13 1","pages":"263 - 272"},"PeriodicalIF":3.9,"publicationDate":"2022-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48672063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Terahertz frequency selective surfaces using heterostructures based on two-dimensional diffraction grating of single-walled carbon nanotubes 基于单壁碳纳米管二维衍射光栅的异质结构太赫兹频率选择表面

IF 3.9 3区材料科学

International Journal of Smart and Nano Materials Pub Date : 2022-03-11 DOI: 10.1080/19475411.2022.2148307

P. Timoshenko, A. Lerer, S. Rochal

引用次数: 1