The Experts below are selected from a list of 2211 Experts worldwide ranked by ideXlab platform
Zhongguo Song  One of the best experts on this subject based on the ideXlab platform.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Jiangfan Liu, Jie Wang, Zhongguo SongAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Zhongguo Song, Jie Wang, Xiaoli XiAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology,...

Microstructure Design Method for Multineedle Whisker Radar Absorbing Material
IEEE Antennas and Wireless Propagation Letters, 2016CoAuthors: Yuchen Zhao, Jiangfan Liu, Zhongguo SongAbstract:Multineedle whisker Radar Absorbing Material (RAM) is a new kind of stealth nanocomposite, whose Radar Absorbing property is a function of microstructure. The availability of appropriate simulation models taking account of the microscopic structure of such interesting composite is important for its design and performance optimization. In this letter, a novel simulation model is presented to carry out the microstructure design for improving Radar Absorbing performance of multineedle whisker RAM. First, this computational model is established according to equivalent medium theory and transmission line method. Then, calculative curve is compared to existing experimental data, and good agreement suggests that the proposed model can be a useful tool for microstructure optimization of this kind of RAM. Finally, the microstructures of a threelayer multineedle zinc oxide whisker (MZnOw) RAM are optimized by using the simulation model and particle swarm algorithm, and the numerical results demonstrate the potential of microstructure design for improving the Radar Absorbing property of such interesting composite.
Yuchen Zhao  One of the best experts on this subject based on the ideXlab platform.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Jiangfan Liu, Jie Wang, Zhongguo SongAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Zhongguo Song, Jie Wang, Xiaoli XiAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology,...

Microstructure Design Method for Multineedle Whisker Radar Absorbing Material
IEEE Antennas and Wireless Propagation Letters, 2016CoAuthors: Yuchen Zhao, Jiangfan Liu, Zhongguo SongAbstract:Multineedle whisker Radar Absorbing Material (RAM) is a new kind of stealth nanocomposite, whose Radar Absorbing property is a function of microstructure. The availability of appropriate simulation models taking account of the microscopic structure of such interesting composite is important for its design and performance optimization. In this letter, a novel simulation model is presented to carry out the microstructure design for improving Radar Absorbing performance of multineedle whisker RAM. First, this computational model is established according to equivalent medium theory and transmission line method. Then, calculative curve is compared to existing experimental data, and good agreement suggests that the proposed model can be a useful tool for microstructure optimization of this kind of RAM. Finally, the microstructures of a threelayer multineedle zinc oxide whisker (MZnOw) RAM are optimized by using the simulation model and particle swarm algorithm, and the numerical results demonstrate the potential of microstructure design for improving the Radar Absorbing property of such interesting composite.
Xiaoli Xi  One of the best experts on this subject based on the ideXlab platform.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Zhongguo Song, Jie Wang, Xiaoli XiAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology,...
Jie Wang  One of the best experts on this subject based on the ideXlab platform.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Zhongguo Song, Jie Wang, Xiaoli XiAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology,...

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Jiangfan Liu, Jie Wang, Zhongguo SongAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.
Jiangfan Liu  One of the best experts on this subject based on the ideXlab platform.

prediction of microwave absorption properties of tetrapod needle zinc oxide whisker Radar Absorbing Material without prior knowledge
Journal of Applied Physics, 2017CoAuthors: Yuchen Zhao, Jiangfan Liu, Jie Wang, Zhongguo SongAbstract:The Radar Absorbing Material (RAM) containing a tetrapodneedle zinc oxide whisker (TZnOw) has been proved to have good efficiency of microwave absorption. However, the available theoretical models, which are intended to predict the microwave Absorbing properties of such an interesting composite, still cannot work well without some prior knowledge, like the measured effective electromagnetic parameters of the prepared TZnOw composite. Hence, we propose a novel predictive method here to calculate the reflectivity of TZnOw RAM without prior knowledge. In this method, the Absorbing ability of this kind of Material is divided into three main aspects: the unstructured background, the conductive network, and the nanostructured particle. Then, the attenuation properties of these three parts are represented, respectively, by three different approaches: the equivalent spherical particle and the static strong fluctuation theory, the equivalent circuit model obtained from the complex impedance spectra technology, and the combination of four different microscopic electromagnetic responses. The operational calculation scheme can be obtained by integrating these three absorption effects into the existing theoretical attenuation model. The reasonable agreement between the theoretical and experimental data of a TZnON/SiO2 composite in the range of 8–14 GHz shows that the proposed scheme can predict the microwave absorption properties of the TZnOw RAM. Furthermore, a detailed analysis of these three mechanisms indicates that, on the one hand, the background plays a dominant role in determining the real part of the effective permittivity of the TZnOw composite while the network and the particle are the decisive factors of its Material loss; on the other hand, an zerophase impedance, i.e., a pure resistance, with appropriate resonance characteristic might be a rational physical description of the attenuation property of the conductive network, but it is difficult to realize such an impedance property by the traditional resistance and capacitance network. As a result, a series resonant circuit with a relatively low quality factor is introduced to approximate the Material loss caused by the network. Finally, the different combinations of these three Absorbing mechanisms are analyzed to further display their roles in the overall Absorbing performance.

Microstructure Design Method for Multineedle Whisker Radar Absorbing Material
IEEE Antennas and Wireless Propagation Letters, 2016CoAuthors: Yuchen Zhao, Jiangfan Liu, Zhongguo SongAbstract:Multineedle whisker Radar Absorbing Material (RAM) is a new kind of stealth nanocomposite, whose Radar Absorbing property is a function of microstructure. The availability of appropriate simulation models taking account of the microscopic structure of such interesting composite is important for its design and performance optimization. In this letter, a novel simulation model is presented to carry out the microstructure design for improving Radar Absorbing performance of multineedle whisker RAM. First, this computational model is established according to equivalent medium theory and transmission line method. Then, calculative curve is compared to existing experimental data, and good agreement suggests that the proposed model can be a useful tool for microstructure optimization of this kind of RAM. Finally, the microstructures of a threelayer multineedle zinc oxide whisker (MZnOw) RAM are optimized by using the simulation model and particle swarm algorithm, and the numerical results demonstrate the potential of microstructure design for improving the Radar Absorbing property of such interesting composite.