The advances in metamaterial science and technology have raised the expectations of camouflage or stealth researchers to one order higher in terms of absorption characteristics.As metamaterial inspired radar absorbing...The advances in metamaterial science and technology have raised the expectations of camouflage or stealth researchers to one order higher in terms of absorption characteristics.As metamaterial inspired radar absorbing structures are proving themselves as a good candidate with near unity absorption,feasibility towards hardware realization is necessary.Hence an extensive literature survey of metamaterial inspired radar absorbing structure has been carried out and reported in this paper along with the challenges and material issues.The various types of metamaterial structures that can be used as absorber have been provided along with simulation figures.To make the review more useful,graphene and carbon nanotube(CNT)based radar absorbing structures are also included along with their simulation and fabrication techniques.展开更多
We study surface plasmon polaritons excited on two-dimensional three-order dendritic structures. Previous studies show that split ring resonators （SRRs） can be used to obtain magnetic resonance, thus sustairdng surf...We study surface plasmon polaritons excited on two-dimensional three-order dendritic structures. Previous studies show that split ring resonators （SRRs） can be used to obtain magnetic resonance, thus sustairdng surface waves behaving like surface plasmon polaritons （SPPs）. In this paper, we obtain detailed results on surface plasmon polaritons of several different grating structures and theoretically prove that this kind of structures can sustain SPPs. Besides, since dendritic structures can be fabricated by double template-assisted electrochemical deposition, it is worth noting that fabrication of SPP-based materials might be much easier.展开更多
In this paper we present a rigorous derivation of the material parameters for both the cylinder and rectangle cloaking structures.Numerical results using these material parameters are presented to demonstrate the cloa...In this paper we present a rigorous derivation of the material parameters for both the cylinder and rectangle cloaking structures.Numerical results using these material parameters are presented to demonstrate the cloaking effect.展开更多
We analyze the particular behavior exhibited by a chaotic waves field containing Peregrine soliton and Akhmediev breathers. This behavior can be assimilated to a tree with “roots of propagation” which propagate rand...We analyze the particular behavior exhibited by a chaotic waves field containing Peregrine soliton and Akhmediev breathers. This behavior can be assimilated to a tree with “roots of propagation” which propagate randomly. Besides, this strange phenomenon can be called “tree structures”. So, we present the collapse of dark and bright solitons in order to build up the above mentioned chaotic waves field. The investigation is done in a particular nonlinear transmission line called chameleon nonlinear transmission line. Thus, we show that this line acts as a bandpass filter at low frequencies and the impact of distance, frequency and dimensionless capacitor are also presented. In addition, the chameleon’s behavior is due to the fact that without modifying the appearance structure, it can present alternatively purely right- or left-handed transmission line. This line is different to the composite one.展开更多
We theoretically propose a scheme to realize the dynamic control of the properties of the terahertz（THz） rainbow trapping effect（RTE） based on a silicon-filled graded grating（SFGG） in a relatively broad band via...We theoretically propose a scheme to realize the dynamic control of the properties of the terahertz（THz） rainbow trapping effect（RTE） based on a silicon-filled graded grating（SFGG） in a relatively broad band via optical pumping.Through the theoretical analysis and finite-element method simulations, it is conceptually demonstrated that the band of the RTE can be dynamically tuned in a range of -0.06 THz. Furthermore, the SFGG can also be optically switched between a device for the RTE and a waveguide for releasing the trapped waves. The results obtained here may imply applications for the tunable THz plasmonic devices, such as on-chip optical buffers, broad band slow-light systems, and integrated optical filters.展开更多
This paper takes micro-nano motors and metamaterials as examples to introduce the basic concept and development of functional micro nano structures, and analyzes the application potential of the micro-nano structure d...This paper takes micro-nano motors and metamaterials as examples to introduce the basic concept and development of functional micro nano structures, and analyzes the application potential of the micro-nano structure design and manufacturing technology in the petroleum industry. The functional micro-nano structure is the structure and device with special functions prepared to achieve a specific goal. New functional micro-nano structures are classified into mobile type(e.g. micro-nano motors) and fixed type(e.g. metamaterials), and 3 D printing technology is a developed method of manufacturing. Combining the demand for exploration and development in oil and gas fields and the research status of intelligent micro-nano structures, we believe that there are 3 potential application directions:(1) The intelligent micro-nano structures represented by metamaterials and smart coatings can be applied to the oil recovery engineering technology and equipment to improve the stability and reliability of petroleum equipment.(2) The smart micro-nano robots represented by micro-motors and smart microspheres can be applied to the development of new materials for enhanced oil recovery, effectively improving the development efficiency of heavy oil, shale oil and other resources.(3) The intelligent structure manufacturing technology represented by 3 D printing technology can be applied to the field of microfluidics in reservoir fluids to guide the selection of mine flooding agents and improve the efficiency of mining.展开更多
文摘The advances in metamaterial science and technology have raised the expectations of camouflage or stealth researchers to one order higher in terms of absorption characteristics.As metamaterial inspired radar absorbing structures are proving themselves as a good candidate with near unity absorption,feasibility towards hardware realization is necessary.Hence an extensive literature survey of metamaterial inspired radar absorbing structure has been carried out and reported in this paper along with the challenges and material issues.The various types of metamaterial structures that can be used as absorber have been provided along with simulation figures.To make the review more useful,graphene and carbon nanotube(CNT)based radar absorbing structures are also included along with their simulation and fabrication techniques.
基金Supported by the National Natural Science Foundation of China under Grants Nos. 10974030 and 10574027
文摘We study surface plasmon polaritons excited on two-dimensional three-order dendritic structures. Previous studies show that split ring resonators （SRRs） can be used to obtain magnetic resonance, thus sustairdng surface waves behaving like surface plasmon polaritons （SPPs）. In this paper, we obtain detailed results on surface plasmon polaritons of several different grating structures and theoretically prove that this kind of structures can sustain SPPs. Besides, since dendritic structures can be fabricated by double template-assisted electrochemical deposition, it is worth noting that fabrication of SPP-based materials might be much easier.
基金The first author is supported by National Science Foundation grant DMS-0810896This work is also inspired by the workshop “Metamaterials:Applications,Analysis and Modeling”held at the Institute for Pure and Applied Mathematics(IPAM)located at University of California at Los Angeles(UCLA)during January 25-29,2010.+1 种基金As Co-Chair of this workshop,he highly appreciated IPAM’s kind support for sponsoring this workshopThe second author is supported in part by the NSFC Key Project 11031006 and Hunan Provincial NSF project 10JJ7001.
文摘In this paper we present a rigorous derivation of the material parameters for both the cylinder and rectangle cloaking structures.Numerical results using these material parameters are presented to demonstrate the cloaking effect.
文摘We analyze the particular behavior exhibited by a chaotic waves field containing Peregrine soliton and Akhmediev breathers. This behavior can be assimilated to a tree with “roots of propagation” which propagate randomly. Besides, this strange phenomenon can be called “tree structures”. So, we present the collapse of dark and bright solitons in order to build up the above mentioned chaotic waves field. The investigation is done in a particular nonlinear transmission line called chameleon nonlinear transmission line. Thus, we show that this line acts as a bandpass filter at low frequencies and the impact of distance, frequency and dimensionless capacitor are also presented. In addition, the chameleon’s behavior is due to the fact that without modifying the appearance structure, it can present alternatively purely right- or left-handed transmission line. This line is different to the composite one.
基金supported by the National Natural Science Foundation of China(Grant Nos.11304272 and 11574319)the Applied Basic Research Foundation of Yunnan Province,China(Grant No.2013FD003)the Young Backbone Teachers Training Program of Yunnan University,Ministry of Science and Technology of China(Grant No.2011YQ130018)
文摘We theoretically propose a scheme to realize the dynamic control of the properties of the terahertz（THz） rainbow trapping effect（RTE） based on a silicon-filled graded grating（SFGG） in a relatively broad band via optical pumping.Through the theoretical analysis and finite-element method simulations, it is conceptually demonstrated that the band of the RTE can be dynamically tuned in a range of -0.06 THz. Furthermore, the SFGG can also be optically switched between a device for the RTE and a waveguide for releasing the trapped waves. The results obtained here may imply applications for the tunable THz plasmonic devices, such as on-chip optical buffers, broad band slow-light systems, and integrated optical filters.
基金Supported by the National Natural Science Foundation of China(41602159)
文摘This paper takes micro-nano motors and metamaterials as examples to introduce the basic concept and development of functional micro nano structures, and analyzes the application potential of the micro-nano structure design and manufacturing technology in the petroleum industry. The functional micro-nano structure is the structure and device with special functions prepared to achieve a specific goal. New functional micro-nano structures are classified into mobile type(e.g. micro-nano motors) and fixed type(e.g. metamaterials), and 3 D printing technology is a developed method of manufacturing. Combining the demand for exploration and development in oil and gas fields and the research status of intelligent micro-nano structures, we believe that there are 3 potential application directions:(1) The intelligent micro-nano structures represented by metamaterials and smart coatings can be applied to the oil recovery engineering technology and equipment to improve the stability and reliability of petroleum equipment.(2) The smart micro-nano robots represented by micro-motors and smart microspheres can be applied to the development of new materials for enhanced oil recovery, effectively improving the development efficiency of heavy oil, shale oil and other resources.(3) The intelligent structure manufacturing technology represented by 3 D printing technology can be applied to the field of microfluidics in reservoir fluids to guide the selection of mine flooding agents and improve the efficiency of mining.
