Pub Date : 2023-06-12DOI: 10.1080/19475411.2023.2221668
Shushan Zhang, Peng Jiang, Jixiang Qi, Ganchao Chen, Yonghuan Wang, Ran Tao, Zhao Chen, Ying Li
ABSTRACT Along with the living environment, organisms have evolved structures that adapt to specific environments and have better mechanical properties. Bioinspired materials learn from nature and improve their mechanical properties by imitating the structure of living organisms. Based on the 4D printed shape memory polymer and the bioinspired design method, this research proposes a soft and hard phase hybrid bioinspired metamaterial with shape memory effect and programmable mechanical properties. Compared with traditional nacre-like materials, bioinspired materials have adjustable characteristics of mechanical properties, impact resistance, and low-frequency vibration isolation. First, based on the constitutive relation of SMP (Shape memory polymer) material and its numerical simulation, an intelligent bioinspired metamaterial is designed. Subsequently, the mechanical properties and vibration isolation behavior and adjustability performance of multi-scale bioinspired metamaterials are explained by experiments. Finally, the adjustable functional mechanism of the deformation and vibration isolation of the bioinspired metamaterial is described. The research of these bioinspired metamaterials has broad application prospects in the fields of impact protection and low-frequency vibration absorption. Graphical abstract
{"title":"Adjustable indentation and vibration isolation performances of nacre-like metamaterial","authors":"Shushan Zhang, Peng Jiang, Jixiang Qi, Ganchao Chen, Yonghuan Wang, Ran Tao, Zhao Chen, Ying Li","doi":"10.1080/19475411.2023.2221668","DOIUrl":"https://doi.org/10.1080/19475411.2023.2221668","url":null,"abstract":"ABSTRACT Along with the living environment, organisms have evolved structures that adapt to specific environments and have better mechanical properties. Bioinspired materials learn from nature and improve their mechanical properties by imitating the structure of living organisms. Based on the 4D printed shape memory polymer and the bioinspired design method, this research proposes a soft and hard phase hybrid bioinspired metamaterial with shape memory effect and programmable mechanical properties. Compared with traditional nacre-like materials, bioinspired materials have adjustable characteristics of mechanical properties, impact resistance, and low-frequency vibration isolation. First, based on the constitutive relation of SMP (Shape memory polymer) material and its numerical simulation, an intelligent bioinspired metamaterial is designed. Subsequently, the mechanical properties and vibration isolation behavior and adjustability performance of multi-scale bioinspired metamaterials are explained by experiments. Finally, the adjustable functional mechanism of the deformation and vibration isolation of the bioinspired metamaterial is described. The research of these bioinspired metamaterials has broad application prospects in the fields of impact protection and low-frequency vibration absorption. Graphical abstract","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"303 - 320"},"PeriodicalIF":3.9,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60496932","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}
Pub Date : 2023-05-11DOI: 10.1080/19475411.2023.2211036
L. Shao, Huanyu Yang, J. Ou, Zhi Zhou
ABSTRACT Carbon fiber reinforced polymer (CFRP) can be applied for bridge cables due to its excellent properties. As the important load-bearing structural component, real-time force monitoring of the CFRP cable is required. This paper presents a new smart CFRP cable that combines the self-sensing rods with embedded sensors and the anchorage system using extrusion technology. By embedding optical fiber (OF) and coaxial cable Fabry-Perot interferometer (CCFPI) into CFRP rods respectively, two types of self-sensing rods (CFRP-OF rod and CFRP-CCFPI rod) were fabricated. A new anchorage unit using an extrusion process was proposed as a basic component of smart CFRP cables. Anchorage units holding a CFRP-OF rod and a CFRP-CCFPI rod were tested to obtain their sensing and mechanical properties. Three anchorage units were assembled to form a smart CFRP cable with self-sensing functionality. A verification test was carried out to confirm the capability of monitoring the cable force. The test results demonstrate that the smart CFRP cable composed of multiple anchorage units has good potential in bridge engineering. GRAPHICAL ABSTRACT
{"title":"Development and sensing performance study of a smart CFRP cable assembled by multi-group anchorage units","authors":"L. Shao, Huanyu Yang, J. Ou, Zhi Zhou","doi":"10.1080/19475411.2023.2211036","DOIUrl":"https://doi.org/10.1080/19475411.2023.2211036","url":null,"abstract":"ABSTRACT Carbon fiber reinforced polymer (CFRP) can be applied for bridge cables due to its excellent properties. As the important load-bearing structural component, real-time force monitoring of the CFRP cable is required. This paper presents a new smart CFRP cable that combines the self-sensing rods with embedded sensors and the anchorage system using extrusion technology. By embedding optical fiber (OF) and coaxial cable Fabry-Perot interferometer (CCFPI) into CFRP rods respectively, two types of self-sensing rods (CFRP-OF rod and CFRP-CCFPI rod) were fabricated. A new anchorage unit using an extrusion process was proposed as a basic component of smart CFRP cables. Anchorage units holding a CFRP-OF rod and a CFRP-CCFPI rod were tested to obtain their sensing and mechanical properties. Three anchorage units were assembled to form a smart CFRP cable with self-sensing functionality. A verification test was carried out to confirm the capability of monitoring the cable force. The test results demonstrate that the smart CFRP cable composed of multiple anchorage units has good potential in bridge engineering. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"286 - 302"},"PeriodicalIF":3.9,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46316406","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}
Pub Date : 2023-05-01DOI: 10.1080/19475411.2023.2208086
H. Ye, W. Shen, Weiwei Wang, Ran Tao
ABSTRACT Lattice structure can realize excellent multifunctional characteristics because of its huge design space, and the cellular configuration directly affects the lattice structural performance and lightweight. A novel energy-absorbing multifunctional lattice structure with phononic bandgap is presented by topology and parameter optimization in this paper. First, the two-dimensional (2D) cellular configuration is lightweight designed by using independent continuous mapping (ICM) topology optimization method. The 2D cell is reconstructed by geometric parameters and rotated into a three-dimensional (3D) cell by using chiral shape to achieve bandgap. Subsequently, the surrogated model with energy absorption as the object and first-order natural frequency as the constraint is established to optimize a parametric 3D cell based on the Response Surface Methodology (RSM). Finally, the lattice structures are assembled with dodecagonal staggered arrangements to avoid the deformation interference among the adjacent cells. In addition, the lattice structural energy absorption and bandgap characteristics are analyzed and discussed. Compared to Kelvin lattice structure, the optimal lattice structure shows significant improvement in energy absorption efficiency. Besides, the proposed design also performs well in damping characteristics of the high-frequency and wide-bandgap. The lattice structural optimization design framework has great meaning to achieve the equipment structural lightweight and multi-function in the aerospace field. GRAPHICAL ABSTRACT
{"title":"A systematic design of multifunctional lattice structures with energy absorption and phononic bandgap by topology and parameter optimization","authors":"H. Ye, W. Shen, Weiwei Wang, Ran Tao","doi":"10.1080/19475411.2023.2208086","DOIUrl":"https://doi.org/10.1080/19475411.2023.2208086","url":null,"abstract":"ABSTRACT Lattice structure can realize excellent multifunctional characteristics because of its huge design space, and the cellular configuration directly affects the lattice structural performance and lightweight. A novel energy-absorbing multifunctional lattice structure with phononic bandgap is presented by topology and parameter optimization in this paper. First, the two-dimensional (2D) cellular configuration is lightweight designed by using independent continuous mapping (ICM) topology optimization method. The 2D cell is reconstructed by geometric parameters and rotated into a three-dimensional (3D) cell by using chiral shape to achieve bandgap. Subsequently, the surrogated model with energy absorption as the object and first-order natural frequency as the constraint is established to optimize a parametric 3D cell based on the Response Surface Methodology (RSM). Finally, the lattice structures are assembled with dodecagonal staggered arrangements to avoid the deformation interference among the adjacent cells. In addition, the lattice structural energy absorption and bandgap characteristics are analyzed and discussed. Compared to Kelvin lattice structure, the optimal lattice structure shows significant improvement in energy absorption efficiency. Besides, the proposed design also performs well in damping characteristics of the high-frequency and wide-bandgap. The lattice structural optimization design framework has great meaning to achieve the equipment structural lightweight and multi-function in the aerospace field. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"265 - 285"},"PeriodicalIF":3.9,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42913612","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}
ABSTRACT Developing high-performance nanostructured materials is key to deliver the potential of hydrovoltaic technology into practical applications. As single-component materials have approached its limit in generating hydrovoltaic electricity, the development of multi-component hydrovoltaic materials has been necessary in continuously boosting the electricity output. Here, we report a hydrovoltaic material by integrating reduced graphene oxides and polypyrrole nanoparticles (rGO/PPy), where the rGO contributes improved conductivity and large specific surface area while PPy nanoparticles enable enhanced interaction with water. The device fabricated with this material generates a short-circuit current of 6 μA as well as a maximum power density of over 1 μW/cm3 from natural evaporation of water. And the substantial ion–PPy interaction enables robust voltage generation from evaporation of various salt solutions. Moreover, an outstanding scaling ability is demonstrated by connecting 10 devices in series that generate a sustainable voltage of up to ~2.5 V, sufficing to power many commercial devices, e.g. LED bulb and LCD screen GRAPHICAL ABSTRACT
{"title":"Integrating reduced graphene oxides and PPy nanoparticles for enhanced electricity from water evaporation","authors":"Bingkun Tian, X. Jiang, Weicun Chu, Chunxiao Zheng, Wanlin Guo, Zhuhua Zhang","doi":"10.1080/19475411.2023.2205176","DOIUrl":"https://doi.org/10.1080/19475411.2023.2205176","url":null,"abstract":"ABSTRACT Developing high-performance nanostructured materials is key to deliver the potential of hydrovoltaic technology into practical applications. As single-component materials have approached its limit in generating hydrovoltaic electricity, the development of multi-component hydrovoltaic materials has been necessary in continuously boosting the electricity output. Here, we report a hydrovoltaic material by integrating reduced graphene oxides and polypyrrole nanoparticles (rGO/PPy), where the rGO contributes improved conductivity and large specific surface area while PPy nanoparticles enable enhanced interaction with water. The device fabricated with this material generates a short-circuit current of 6 μA as well as a maximum power density of over 1 μW/cm3 from natural evaporation of water. And the substantial ion–PPy interaction enables robust voltage generation from evaporation of various salt solutions. Moreover, an outstanding scaling ability is demonstrated by connecting 10 devices in series that generate a sustainable voltage of up to ~2.5 V, sufficing to power many commercial devices, e.g. LED bulb and LCD screen GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"230 - 242"},"PeriodicalIF":3.9,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46247892","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}
Pub Date : 2023-04-03DOI: 10.1080/19475411.2023.2199703
Dong Lu, Z. Leng, Guoyang Lu, Daiyu Wang, Yanlin Huo
ABSTRACT Carbon materials engineered electrically conductive cement concrete (ECCC) is typically prepared by directly adding carbon-based conductive filler into the cement matrix and then mixing cement with aggregates. With such a strategy, ECCC possesses a high conductivity and strain/stress sensitivity and thus can be used for snow and ice melting, ohmic heating, cathodic protection system, electromagnetic shielding, structural health monitoring, and traffic detection. This paper aims to provide a systematic review on the development and applications of ECCC, especially the progress made in the past decade (from 2012 to 2022). The composition and manufacture of ECCC are first introduced. Then, the electrical performance of ECCC and its potential applications are reviewed. Finally, the remaining challenges for future work are discussed. GRAPHICAL ABSTRACT
{"title":"A critical review of carbon materials engineered electrically conductive cement concrete and its potential applications","authors":"Dong Lu, Z. Leng, Guoyang Lu, Daiyu Wang, Yanlin Huo","doi":"10.1080/19475411.2023.2199703","DOIUrl":"https://doi.org/10.1080/19475411.2023.2199703","url":null,"abstract":"ABSTRACT Carbon materials engineered electrically conductive cement concrete (ECCC) is typically prepared by directly adding carbon-based conductive filler into the cement matrix and then mixing cement with aggregates. With such a strategy, ECCC possesses a high conductivity and strain/stress sensitivity and thus can be used for snow and ice melting, ohmic heating, cathodic protection system, electromagnetic shielding, structural health monitoring, and traffic detection. This paper aims to provide a systematic review on the development and applications of ECCC, especially the progress made in the past decade (from 2012 to 2022). The composition and manufacture of ECCC are first introduced. Then, the electrical performance of ECCC and its potential applications are reviewed. Finally, the remaining challenges for future work are discussed. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"189 - 215"},"PeriodicalIF":3.9,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47049942","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}
Pub Date : 2023-04-03DOI: 10.1080/19475411.2023.2202156
Lizhong Dong, Xulin Wei, Ming Ren, J. Di
ABSTRACT Artificial muscle fibers driven electrothermally with excellent properties of response, stroke, and work capacity are expected to serve in some intelligent structures and systems. However, muscle fibers that operate in subzero environments are highly needed in industrial production and aerospace applications but remain challenging. Herein, we reported a coaxial artificial muscle fiber by electrospinning a sheath of polycaprolactone (PCL) nanofibers on the surface of a carbon nanotube (CNT) fiber core, achieving the actuation in response to thermal at subzero temperatures. The CNT@PCL coaxial muscle fiber under 0.3 MPa achieved a maximum contractile stroke of ~18% as the temperature changed from −130°C to 45°C. The actuation mechanism at subzero temperatures of this muscle fiber was analyzed in combination with the temperature-deformation schematic curve of different polymers. Furthermore, a temperature sensor based on this muscle fiber was developed, due to the excellent linear relationship between the contraction and temperature. A 3D-printed prosthetic arm was designed to further exhibit the application demonstrations of this muscle fiber in subzero environments. This work provides new insights into artificial muscle fibers for serving in extreme environments with ultralow temperatures. GRAPHICAL ABSTRACT
{"title":"Thermally driven carbon nanotube@polycaprolactone coaxial artificial muscle fibers working in subzero environments","authors":"Lizhong Dong, Xulin Wei, Ming Ren, J. Di","doi":"10.1080/19475411.2023.2202156","DOIUrl":"https://doi.org/10.1080/19475411.2023.2202156","url":null,"abstract":"ABSTRACT Artificial muscle fibers driven electrothermally with excellent properties of response, stroke, and work capacity are expected to serve in some intelligent structures and systems. However, muscle fibers that operate in subzero environments are highly needed in industrial production and aerospace applications but remain challenging. Herein, we reported a coaxial artificial muscle fiber by electrospinning a sheath of polycaprolactone (PCL) nanofibers on the surface of a carbon nanotube (CNT) fiber core, achieving the actuation in response to thermal at subzero temperatures. The CNT@PCL coaxial muscle fiber under 0.3 MPa achieved a maximum contractile stroke of ~18% as the temperature changed from −130°C to 45°C. The actuation mechanism at subzero temperatures of this muscle fiber was analyzed in combination with the temperature-deformation schematic curve of different polymers. Furthermore, a temperature sensor based on this muscle fiber was developed, due to the excellent linear relationship between the contraction and temperature. A 3D-printed prosthetic arm was designed to further exhibit the application demonstrations of this muscle fiber in subzero environments. This work provides new insights into artificial muscle fibers for serving in extreme environments with ultralow temperatures. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"216 - 229"},"PeriodicalIF":3.9,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46481657","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}
Pub Date : 2023-04-03DOI: 10.1080/19475411.2023.2197866
Bing Deng, Rongfang Zou, Y. Huang, Lu Feng, Yanru Chen
ABSTRACT In the humid oral environment, 3Y-TZP ceramics always suffer from low-temperature degradation (LTD) for a long time, which results in the degradation of mechanical properties and catastrophic failure. The low-temperature degradation (LTD) and mechanical properties of low-cost tetravalent (Ge4+, Ti4+) element-doped 3Y-TZP were investigated by analysing grain boundary segregation in samples with deferent contents. The results show that GeO2 is superior to TiO2 in limiting LTD but results in lower flexural strength and fracture toughness when the content is ≥1.5 mol%. This dilemma can be improved by adding only 0.1%-0.5 wt% Al2O3, and the flexural strength and fracture toughness of 0.25 wt% Al2O3 zirconia are then increased to 898 MPa and 4.68 MPa·m1/2 compared with 1Ge-3Y, respectively. This work is expected to provide an effective reference for the development and application of budget dental materials. GRAPHICAL ABSTRACT
{"title":"Effect of grain boundary segregation on aging resistance and mechanical properties of tetravalent element-doped 3Y-TZP ceramics for dental restoration","authors":"Bing Deng, Rongfang Zou, Y. Huang, Lu Feng, Yanru Chen","doi":"10.1080/19475411.2023.2197866","DOIUrl":"https://doi.org/10.1080/19475411.2023.2197866","url":null,"abstract":"ABSTRACT In the humid oral environment, 3Y-TZP ceramics always suffer from low-temperature degradation (LTD) for a long time, which results in the degradation of mechanical properties and catastrophic failure. The low-temperature degradation (LTD) and mechanical properties of low-cost tetravalent (Ge4+, Ti4+) element-doped 3Y-TZP were investigated by analysing grain boundary segregation in samples with deferent contents. The results show that GeO2 is superior to TiO2 in limiting LTD but results in lower flexural strength and fracture toughness when the content is ≥1.5 mol%. This dilemma can be improved by adding only 0.1%-0.5 wt% Al2O3, and the flexural strength and fracture toughness of 0.25 wt% Al2O3 zirconia are then increased to 898 MPa and 4.68 MPa·m1/2 compared with 1Ge-3Y, respectively. This work is expected to provide an effective reference for the development and application of budget dental materials. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"170 - 188"},"PeriodicalIF":3.9,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41551700","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}
Pub Date : 2023-04-03DOI: 10.1080/19475411.2023.2206675
Hao Duan, Jianping Gu, Hao Zeng, A. Khatibi, Huiyu Sun
ABSTRACT This paper proposes a new thermoviscoelastic finite deformation model incorporating dual relaxation mechanisms to predict the complete thermo-mechanical response of amorphous shape memory polymers. The model is underpinned by the detailed microscopic molecular mechanism and effectively reflects the current understanding of the glass transition phenomenon. Novel evolution rules are obtained from the model to characterize the viscous flow, and a new theory named an internal stress model is introduced and combined with the dual relaxation mechanisms to capture the stress recovery. The rationality of the constitutive model is verified as the theoretical results agree well with the experimental data. Moreover, the constitutive model is further simplified to facilitate engineering applications, and it can roughly capture the characteristics of shape memory polymers. GRAPHICAL ABSTRACT
{"title":"A thermoviscoelastic finite deformation constitutive model based on dual relaxation mechanisms for amorphous shape memory polymers","authors":"Hao Duan, Jianping Gu, Hao Zeng, A. Khatibi, Huiyu Sun","doi":"10.1080/19475411.2023.2206675","DOIUrl":"https://doi.org/10.1080/19475411.2023.2206675","url":null,"abstract":"ABSTRACT This paper proposes a new thermoviscoelastic finite deformation model incorporating dual relaxation mechanisms to predict the complete thermo-mechanical response of amorphous shape memory polymers. The model is underpinned by the detailed microscopic molecular mechanism and effectively reflects the current understanding of the glass transition phenomenon. Novel evolution rules are obtained from the model to characterize the viscous flow, and a new theory named an internal stress model is introduced and combined with the dual relaxation mechanisms to capture the stress recovery. The rationality of the constitutive model is verified as the theoretical results agree well with the experimental data. Moreover, the constitutive model is further simplified to facilitate engineering applications, and it can roughly capture the characteristics of shape memory polymers. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"243 - 264"},"PeriodicalIF":3.9,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43333702","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}
Pub Date : 2023-03-27DOI: 10.1080/19475411.2023.2195686
M. Zhang, Yu Su
ABSTRACT The polarization reorientation in ferroelectric nanomaterials under high-strength AC electric fields is intrinsically a frequency-dependent process. However, the related study is not widely seen. We report a phase-field investigation regarding the dynamics of polarization switching and the electromechanical characteristics of a polycrystalline BaTiO3 nanofilm under applied frequency from 0.1 to 80 kHz. The grain boundaries and the in-plane strains are considered in the model. The obtained hysteresis and butterfly loops exhibit a remarkable variety of shapes with the changing frequency. The underlying mechanism for the observed frequency-dependent physical properties was discussed via domain structure-based analysis. In addition, we examined the influence of the kinetic coefficient in the Ginzburg-Landau equation as well as the influence of the electric-field amplitude to the frequency dependency. It was found that a higher value of kinetic coefficient or field amplitude tends to enhance the mobility of polarization switching and to transform high-frequency characteristics to low-frequency ones. GRAPHICAL ABSTRACT
{"title":"The frequency-dependent polarization switching in nanograined BaTiO3 films under high-strength electric field","authors":"M. Zhang, Yu Su","doi":"10.1080/19475411.2023.2195686","DOIUrl":"https://doi.org/10.1080/19475411.2023.2195686","url":null,"abstract":"ABSTRACT The polarization reorientation in ferroelectric nanomaterials under high-strength AC electric fields is intrinsically a frequency-dependent process. However, the related study is not widely seen. We report a phase-field investigation regarding the dynamics of polarization switching and the electromechanical characteristics of a polycrystalline BaTiO3 nanofilm under applied frequency from 0.1 to 80 kHz. The grain boundaries and the in-plane strains are considered in the model. The obtained hysteresis and butterfly loops exhibit a remarkable variety of shapes with the changing frequency. The underlying mechanism for the observed frequency-dependent physical properties was discussed via domain structure-based analysis. In addition, we examined the influence of the kinetic coefficient in the Ginzburg-Landau equation as well as the influence of the electric-field amplitude to the frequency dependency. It was found that a higher value of kinetic coefficient or field amplitude tends to enhance the mobility of polarization switching and to transform high-frequency characteristics to low-frequency ones. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"155 - 169"},"PeriodicalIF":3.9,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48849353","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}
Pub Date : 2023-03-09DOI: 10.1080/19475411.2023.2184880
Ying Wang, Hongmei Li, Shaowei Lu, Xingmin Liu, W. Li, Xiaoqiang Wang, Lu Zhang, Qingxuan Wang
ABSTRACT Composite structures are sensitive to impact damage in practical engineering. Electric resistance change method (ERCM) is an ideal technique for damage monitoring of composite structures. Due to the anisotropy of fiber-resin matrix composites, impact location monitoring is difficult, and research on impact location of fiber composite laminates (FRPs) is limited. A preparation method of MXene/CNT/CuNps thin film sensor is proposed. According to the modeling simulation and theoretical calculation, the resistance change characteristics of the thin film sensor are obtained, the relationship between the impact distance and the resistance change is established, and the sensor array is designed. A three-point localization algorithm and a weight function compensation localization algorithm are proposed, which can improve the imaging accuracy of the impact position. The impact point location was observed and analyzed using ultrasonic C-scan technology. The results show that the weight function compensation positioning algorithm can accurately locate the impact of the composite structure, and the error in the X direction is 7.1%, the error in the Y direction is 0.03%, which verifies the effectiveness of the method. GRAPHICAL ABSTRACT
{"title":"Impact localization of composite laminates based on weight function compensation localization algorithm of thin film sensors","authors":"Ying Wang, Hongmei Li, Shaowei Lu, Xingmin Liu, W. Li, Xiaoqiang Wang, Lu Zhang, Qingxuan Wang","doi":"10.1080/19475411.2023.2184880","DOIUrl":"https://doi.org/10.1080/19475411.2023.2184880","url":null,"abstract":"ABSTRACT Composite structures are sensitive to impact damage in practical engineering. Electric resistance change method (ERCM) is an ideal technique for damage monitoring of composite structures. Due to the anisotropy of fiber-resin matrix composites, impact location monitoring is difficult, and research on impact location of fiber composite laminates (FRPs) is limited. A preparation method of MXene/CNT/CuNps thin film sensor is proposed. According to the modeling simulation and theoretical calculation, the resistance change characteristics of the thin film sensor are obtained, the relationship between the impact distance and the resistance change is established, and the sensor array is designed. A three-point localization algorithm and a weight function compensation localization algorithm are proposed, which can improve the imaging accuracy of the impact position. The impact point location was observed and analyzed using ultrasonic C-scan technology. The results show that the weight function compensation positioning algorithm can accurately locate the impact of the composite structure, and the error in the X direction is 7.1%, the error in the Y direction is 0.03%, which verifies the effectiveness of the method. GRAPHICAL ABSTRACT","PeriodicalId":48516,"journal":{"name":"International Journal of Smart and Nano Materials","volume":"14 1","pages":"139 - 154"},"PeriodicalIF":3.9,"publicationDate":"2023-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44892019","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}
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