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Applications of Fianite in Electronics 陶瓷在电子领域的应用
Q3 Engineering Pub Date : 2012-12-19 DOI: 10.1155/2012/907560
A. Buzynin, Yu. N. Buzynin, V. Panov
Fianite or yttrium stabilized zirconia (YSZ) solid solutions single crystals were known worldwide as jewelry material. The review is devoted to novel applications of the material in the field of microelectronics. A number of modern aspects of the application of fianite in micro-, opto- and SHF-electronics were analyzed in this paper. It was demonstrated that fianite is an extremely promising multipurpose material for new electronic technologies due to unique combination of physical and chemical properties. As a substrate and buffer layer for the epitaxy of Si, Ge, GeSi and AIIIBV compounds (GaAs, InGaAs, GaSb, InAs, GaN, AlN), fianite has a number of advantages over the other dielectric materials. The use of fianite (as well as ZrO2 and HfO2 oxides) instead of SiO2 as gate dielectrics in CMOC technology seems to be of peculiar interest. The unique properties of fianite as protecting, stabilizing and antireflecting coatings in electronics and optoelectronic devices have been outlined. A comparative study of the performance characteristics of fianite and conventional materials has been carried out.
钒钛或钇稳定氧化锆(YSZ)固溶体单晶是世界上公认的珠宝材料。综述了该材料在微电子领域的新应用。本文分析了氧化铝在微电子、光电子和超高频电子学方面的现代应用。结果表明,由于其独特的物理和化学组合特性,钛铁矿是一种非常有前途的多用途新电子技术材料。作为Si, Ge, GeSi和AIIIBV化合物(GaAs, InGaAs, GaSb, InAs, GaN, AlN)外延的衬底和缓冲层,氧化铝比其他介电材料具有许多优点。在CMOC技术中,使用钛矿(以及ZrO2和HfO2氧化物)代替SiO2作为栅极介电材料似乎具有特殊的意义。概述了钛石在电子和光电子器件中作为保护、稳定和抗反射涂层的独特性能。并对其性能特点与常规材料进行了对比研究。
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引用次数: 2
Modern Trends in Metamaterial Applications 超材料应用的现代趋势
Q3 Engineering Pub Date : 2012-12-10 DOI: 10.1155/2012/514270
I. Rukhlenko, P. Belov, N. Litchinitser, A. Boltasseva
1 Advanced Computing and Simulation Laboratory (AχL), Department of Electrical and Computer Systems Engineering, Monash University, Clayton, VIC 3800, Australia 2 Photonics and Optical Information Theory Department, National Research University of Information Technologies, Mechanics and Optics, Kronverksky pr. 49, St. Petersburg 197101, Russia 3 Queen Mary, University of London, Mile End Road, London E1 4NS, UK 4 Department of Electrical Engineering, The State University of New York at Buffalo, 230L Davis Hall, Buffalo, NY 14260, USA 5 Birck Nanotechnology Center and School of Electrical and Computer Engineering, Purdue University, 1205 West State Street, West Lafayette, IN 47907, USA
1 .莫纳什大学电气与计算机系统工程系先进计算与仿真实验室(asokul),澳大利亚,维多利亚州克莱顿3800;2 .俄罗斯,圣彼得堡,197101,国立信息技术研究型大学,机械与光学,Kronverksky pr. 49; 3 .伦敦大学玛丽皇后学院,Mile End Road, London E1 4NS, UK; 4 .纽约州立大学布法罗分校,电气工程系,5伯克纳米技术中心和普渡大学电气与计算机工程学院,西拉斐特西州街1205号,美国印第安纳州47907
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引用次数: 2
Multiplexed FBG Monitoring System for Forecasting Coalmine Water Inrush Disaster 煤矿突水灾害预报的多路光纤光栅监测系统
Q3 Engineering Pub Date : 2012-12-06 DOI: 10.1155/2012/895723
B. Liu, S. C. Li, J. Wang, Q. Sui, L. Nie, Z. Wang
This paper presents a novel fiber-Bragg-grating- (FBG-) based system which can monitor and analyze multiple parameters such as temperature, strain, displacement, and seepage pressure simultaneously for forecasting coalmine water inrush disaster. The sensors have minimum perturbation on the strain field. And the seepage pressure sensors adopt a drawbar structure and employ a corrugated diaphragm to transmit seepage pressure to the axial strain of FBG. The pressure sensitivity is 20.20 pm/KPa, which is 6E3 times higher than that of ordinary bare FBG. The FBG sensors are all preembedded on the roof of mining area in coalmine water inrush model test. Then FBG sensing network is set up applying wavelength-division multiplexing (WDM) technology. The experiment is carried out by twelve steps, while the system acquires temperature, strain, displacement, and seepage pressure signals in real time. The results show that strain, displacement, and seepage pressure monitored by the system change significantly before water inrush occurs, and the strain changes firstly. Through signal fusion analyzed it can be concluded that the system provides a novel way to forecast water inrush disaster successfully.
本文提出了一种新型的基于光纤布拉格光栅(FBG- based)的矿井突水灾害预报系统,该系统可以同时监测和分析温度、应变、位移、渗透压力等多个参数。传感器对应变场的扰动最小。渗透压力传感器采用拉杆结构,采用波纹膜片将渗透压力传递给光纤光栅的轴向应变。压力灵敏度为20.20 pm/KPa,是普通裸光纤光栅的6E3倍。在煤矿突水模型试验中,光纤光栅传感器全部预埋在采区顶板上。然后应用波分复用技术建立光纤光栅传感网络。实验分12步进行,系统实时采集温度、应变、位移、渗透压力等信号。结果表明:系统监测的应变、位移和渗流压力在突水前发生显著变化,且应变先发生变化;通过信号融合分析,该系统为突水灾害的成功预测提供了一种新的方法。
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引用次数: 9
Extension of the Multipole Approach to Random Metamaterials 随机超材料多极方法的扩展
Q3 Engineering Pub Date : 2012-11-25 DOI: 10.1155/2012/161402
A. Chipouline, S. Sugavanam, J. Petschulat, T. Pertsch
Influence of the short-range lateral disorder in the meta-atoms positioning on the effective parameters of the metamaterials is investigated theoretically using the multipole approach. Random variation of the near field quasi-static interaction between metaatoms in form of double wires is shown to be the reason for the effective permittivity and permeability changes. The obtained analytical results are compared with the known experimental ones.
利用多极方法从理论上研究了超原子定位中的短程横向无序对超材料有效参数的影响。双导线形式的元原子间近场准静态相互作用的随机变化是导致有效介电常数和磁导率变化的原因。所得的分析结果与已知的实验结果进行了比较。
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引用次数: 4
Rolled-Up Metamaterials 卷起的超材料
Q3 Engineering Pub Date : 2012-11-18 DOI: 10.1155/2012/782864
S. Schwaiger, A. Rottler, S. Mendach
In this paper we review metamaterials fabricated from self-rolling strained metal-semiconductor layer systems. These systems relax their strain upon release from the substrate by rolling up into microtubes with a cross-section similar to a rolled-up carpet. We show that the walls of these microtubes represent three-dimensional optical metamaterials which so far could be used, for example, for the realization of broadband hyperlenses, fishnet metamaterials, or optically active three-dimensional metamaterials utilizing the unique possibility to stack optically active semiconductor heterostructures and metallic nanostructures. Furthermore, we discuss THz metamaterials based on arrays of rolled-up metal semiconductor microtubes and helices.
本文综述了自轧制应变金属-半导体层体系制备的超材料。这些系统通过卷起成截面类似于卷起的地毯的微管,在从基材释放时放松其应变。我们表明,这些微管的壁代表三维光学超材料,迄今为止可以用于实现宽带超透镜,渔网超材料或光学活性三维超材料,利用堆叠光学活性半导体异质结构和金属纳米结构的独特可能性。此外,我们还讨论了基于金属半导体微管和螺旋阵列的太赫兹超材料。
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引用次数: 20
Conditions of Perfect Imaging in Negative Refraction Materials with Gain 带增益负折射材料的完美成像条件
Q3 Engineering Pub Date : 2012-11-08 DOI: 10.1155/2012/347875
Haowen Liang, Yifeng Shao, Jianying Zhou, B. Malomed, G. Kurizki
Light propagation is analyzed in a negative refraction material (NRM) with gain achieved by pumping. An inherent spatial “walk-off” between the directions of phase propagation and energy transfer is known to exist in lossy NRMs. Here, the analysis is extended to the case where the NRM acts as an active material under various pumping conditions. It is shown that the condition for perfect imaging is only possible for specific wavelengths under special excitation conditions. Under excessive gain, the optical imaging can no longer be perfect.
分析了光在负折射材料(NRM)中通过抽运获得增益的传播。已知在有耗NRMs中,相位传播方向和能量传递方向之间存在固有的空间“偏离”。在这里,分析扩展到NRM在各种泵送条件下作为活性材料的情况。结果表明,只有在特定的激发条件下,才有可能在特定的波长下实现完美成像。在增益过大的情况下,光学成像不再完美。
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引用次数: 1
Plasmonic Nanostructure for Enhanced Light Absorption in Ultrathin Silicon Solar Cells 超薄硅太阳能电池中增强光吸收的等离子体纳米结构
Q3 Engineering Pub Date : 2012-11-05 DOI: 10.1155/2012/592754
Jinna He, Chunzhen Fan, Junqiao Wang, Y. Cheng, P. Ding, E. Liang
The performances of thin film solar cells are considerably limited by the low light absorption. Plasmonic nanostructures have been introduced in the thin film solar cells as a possible solution around this issue in recent years. Here, we propose a solar cell design, in which an ultrathin Si film covered by a periodic array of Ag strips is placed on a metallic nanograting substrate. The simulation results demonstrate that the designed structure gives rise to 170% light absorption enhancement over the full solar spectrum with respect to the bared Si thin film. The excited multiple resonant modes, including optical waveguide modes within the Si layer, localized surface plasmon resonance (LSPR) of Ag stripes, and surface plasmon polaritons (SPP) arising from the bottom grating, and the coupling effect between LSPR and SPP modes through an optimization of the array periods are considered to contribute to the significant absorption enhancement. This plasmonic solar cell design paves a promising way to increase light absorption for thin film solar cell applications.
薄膜太阳能电池的光吸收率低,大大限制了其性能。近年来,等离子体纳米结构作为一种可能的解决方案被引入到薄膜太阳能电池中。在这里,我们提出了一种太阳能电池设计,其中超薄硅薄膜被银条的周期性阵列覆盖在金属纳米光栅衬底上。仿真结果表明,与裸硅薄膜相比,所设计的结构在全太阳光谱上的光吸收增强了170%。硅层内的光波导模式、银条纹的局部表面等离子体共振(LSPR)和底部光栅产生的表面等离子体极化子(SPP)等激发的多重谐振模式,以及通过优化阵列周期产生的LSPR和SPP模式之间的耦合效应,被认为是显著增强吸收的原因。这种等离子体太阳能电池的设计为增加薄膜太阳能电池的光吸收铺平了一条有前途的道路。
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引用次数: 12
Applications of Hyperbolic Metamaterial Substrates 双曲型超材料基板的应用
Q3 Engineering Pub Date : 2012-11-05 DOI: 10.1155/2012/452502
Yu Guo, W. Newman, C. Cortes, Z. Jacob
We review the properties of hyperbolic metamaterials and show that they are promising candidates as substrates for nanoimaging, nanosensing, fluorescence engineering, and controlling thermal emission. Hyperbolic metamaterials can support unique bulk modes, tunable surface plasmon polaritons, and surface hyperbolic states (Dyakonov plasmons) that can be used for a variety of applications. We compare the effective medium predictions with practical realizations of hyperbolic metamaterials to show their potential for radiative decay engineering, bioimaging, subsurface sensing, metaplasmonics, and super-Planckian thermal emission.
我们回顾了双曲型超材料的性质,并表明它们是纳米成像、纳米传感、荧光工程和控制热辐射的有前途的衬底。双曲型超材料可以支持独特的体模,可调谐的表面等离子体激元和表面双曲态(Dyakonov等离子体激元),可用于各种应用。我们将有效介质预测与双曲超材料的实际实现进行比较,以显示它们在辐射衰变工程、生物成像、地下传感、元等离子体学和超普朗克热辐射方面的潜力。
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引用次数: 167
Field Enhancement in a Grounded Dielectric Slab by Using a Single Superstrate Layer 利用单层复盖层对接地介质板的场增强
Q3 Engineering Pub Date : 2012-10-31 DOI: 10.1155/2012/439147
C. Valagiannopoulos, N. Tsitsas
The addition of a dielectric layer on a slab configuration is frequently utilized in various electromagnetic devices in order to give them certain desired operational characteristics. In this work, we consider a grounded dielectric film-slab, which is externally excited by a normally-incident Gaussian beam. On top of the film-slab, we use an additional suitably selected single isotropic superstrate layer in order to increase the field concentration inside the slab and hence achieve optimal power transfer from the external source to the internal region. We define a quantity of interest, called “enhancement factor,” expressing the increase of the field concentration in the film-slab when the superstrate is present compared to the case that it is absent. It is shown that large enhancement factor values may be achieved by choosing properly the permittivity, the permeability, and the thickness of the superstrate. In particular, it is demonstrated that the field in the film-slab is significantly enhanced when the slab is composed by an ϵ-near-zero (ENZ) or low-index metamaterial.
在平板结构上添加介电层经常用于各种电磁器件,以使它们具有某些所需的操作特性。在这项工作中,我们考虑了一个接地的介电膜板,它是由一个正入射高斯光束的外部激励。在薄膜板的顶部,我们使用了一个额外的适当选择的单一各向同性的上覆层,以增加板内的场浓度,从而实现从外部源到内部区域的最佳功率传输。我们定义了一个感兴趣的量,称为“增强因子”,表示当上覆层存在时,与没有上覆层的情况相比,膜板中的场浓度增加。结果表明,适当选择介电常数、磁导率和衬底厚度可以获得较大的增强系数值。特别是,当膜板由ϵ-near-zero (ENZ)或低折射率超材料组成时,膜板中的场显著增强。
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引用次数: 9
Realization of Radar Illusion Using Active Devices 利用有源器件实现雷达错觉
Q3 Engineering Pub Date : 2012-10-24 DOI: 10.1155/2012/736876
B. Cao, L. Sun, Z. Mei
A new method is proposed for realizing radar illusion of an electromagnetic target by using active devices. The devices are installed around the target but may closely cover the target or not, leading to closed or open configurations. The amplitudes and phases of the active devices are determined by using T-matrix method. The numerical computation is calculated using MATLAB, and the results show that this method is convenient, flexible, and efficient, which has important significances for implementation of novel electromagnetic devices.
提出了一种利用有源器件实现电磁目标雷达错觉的新方法。设备安装在目标周围,但可能紧密覆盖目标或不覆盖目标,导致封闭或打开配置。采用t矩阵法确定了有源器件的幅值和相位。利用MATLAB进行了数值计算,结果表明该方法方便、灵活、高效,对新型电磁器件的实现具有重要意义。
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引用次数: 2
期刊
Advances in Optoelectronics
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