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Journal articles on the topic 'Negative Structures'

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1

Amini, M., H. R. Nili Sani, and A. Bozorgnia. "Aspects of Negative Dependence Structures." Communications in Statistics - Theory and Methods 42, no. 5 (2013): 907–17. http://dx.doi.org/10.1080/03610926.2011.588362.

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2

Churchill, Christopher B., David W. Shahan, Sloan P. Smith, Andrew C. Keefe, and Geoffrey P. McKnight. "Dynamically variable negative stiffness structures." Science Advances 2, no. 2 (2016): e1500778. http://dx.doi.org/10.1126/sciadv.1500778.

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Variable stiffness structures that enable a wide range of efficient load-bearing and dexterous activity are ubiquitous in mammalian musculoskeletal systems but are rare in engineered systems because of their complexity, power, and cost. We present a new negative stiffness–based load-bearing structure with dynamically tunable stiffness. Negative stiffness, traditionally used to achieve novel response from passive structures, is a powerful tool to achieve dynamic stiffness changes when configured with an active component. Using relatively simple hardware and low-power, low-frequency actuation, we show an assembly capable of fast (<10 ms) and useful (>100×) dynamic stiffness control. This approach mitigates limitations of conventional tunable stiffness structures that exhibit either small (<30%) stiffness change, high friction, poor load/torque transmission at low stiffness, or high power active control at the frequencies of interest. We experimentally demonstrate actively tunable vibration isolation and stiffness tuning independent of supported loads, enhancing applications such as humanoid robotic limbs and lightweight adaptive vibration isolators.
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3

Martin, Terence. "The Negative Structures of American Literature." American Literature 57, no. 1 (1985): 1. http://dx.doi.org/10.2307/2926310.

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4

Novikov, V. V., and K. W. Wojciechowski. "Negative Poisson coefficient of fractal structures." Physics of the Solid State 41, no. 12 (1999): 1970–75. http://dx.doi.org/10.1134/1.1131137.

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5

King, R. B. "Negative Curvature Surfaces in Chemical Structures." Journal of Chemical Information and Computer Sciences 38, no. 2 (1998): 180–88. http://dx.doi.org/10.1021/ci970063+.

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6

Ahmed, Abdul-Hadi N. "Negative dependence structures through stochastic ordering." Trabajos de Estadistica 5, no. 1 (1990): 15–26. http://dx.doi.org/10.1007/bf02863535.

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7

Markoš, Peter, and C. M. Soukoulis. "Structures with negative index of refraction." physica status solidi (a) 197, no. 3 (2003): 595–604. http://dx.doi.org/10.1002/pssa.200303112.

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8

Lim, Teik-Cheng. "2D Structures Exhibiting Negative Area Compressibility." physica status solidi (b) 254, no. 12 (2017): 1600682. http://dx.doi.org/10.1002/pssb.201600682.

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9

Wu, T., and J. F. Mitchell. "Negative differential resistance in mesoscopic manganite structures." Applied Physics Letters 86, no. 25 (2005): 252505. http://dx.doi.org/10.1063/1.1946904.

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10

Sanada, A., C. Caloz, and T. Itoh. "Planar Distributed Structures With Negative Refractive Index." IEEE Transactions on Microwave Theory and Techniques 52, no. 4 (2004): 1252–63. http://dx.doi.org/10.1109/tmtt.2004.825703.

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11

Cohen, Joseph R., Kevin M. Spiegler, Jami F. Young, Benjamin L. Hankin, and John R. Z. Abela. "Self-Structures, Negative Events, and Adolescent Depression." Journal of Early Adolescence 34, no. 6 (2013): 736–59. http://dx.doi.org/10.1177/0272431613503217.

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12

Mizrahi, Amit, and Yeshaiahu Fainman. "Negative radiation pressure on gain medium structures." Optics Letters 35, no. 20 (2010): 3405. http://dx.doi.org/10.1364/ol.35.003405.

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13

Zighelboim, R. S., S. G. Buccino, F. E. Durham, et al. "Negative-parity structures and lifetime measurements inAs71." Physical Review C 50, no. 2 (1994): 716–27. http://dx.doi.org/10.1103/physrevc.50.716.

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14

Cowan, R. D., and M. Wilson. "Simple estimates of atomic negative ion structures." Physica Scripta 43, no. 3 (1991): 244–47. http://dx.doi.org/10.1088/0031-8949/43/3/005.

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15

Shufrin, Igor, Elena Pasternak, and Arcady V. Dyskin. "Planar isotropic structures with negative Poisson’s ratio." International Journal of Solids and Structures 49, no. 17 (2012): 2239–53. http://dx.doi.org/10.1016/j.ijsolstr.2012.04.022.

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16

Jelonek, Włodzimierz. "Positive and negative 3-K-contact structures." Proceedings of the American Mathematical Society 129, no. 1 (2000): 247–56. http://dx.doi.org/10.1090/s0002-9939-00-05527-1.

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17

Adouani, Ines. "Negative vector bundle and complex Finsler structures." Asian-European Journal of Mathematics 09, no. 01 (2016): 1650005. http://dx.doi.org/10.1142/s1793557116500054.

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Given a holomorphic vector bundle [Formula: see text] with a strongly pseudoconvex Finsler metric [Formula: see text], an intrinsic approach to complex Finsler geometry as given by Kobayashi is proposed in order to study the negativity of [Formula: see text].
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18

LAKES, R. "Foam Structures with a Negative Poisson's Ratio." Science 235, no. 4792 (1987): 1038–40. http://dx.doi.org/10.1126/science.235.4792.1038.

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19

Calius, Emilio P., Xavier Bremaud, Bryan Smith, and Andrew Hall. "Negative mass sound shielding structures: Early results." physica status solidi (b) 246, no. 9 (2009): 2089–97. http://dx.doi.org/10.1002/pssb.200982040.

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20

Karimovich, Mukhammadov Said, and Khalilov Shokhibek Otabek O’g’li. "NEGATIVE IMPACT OF ACOUSTICS ON THE EXTERNAL BARRIER STRUCTURES OF THE ARK FORTRESS." American Journal of Applied Science and Technology 03, no. 03 (2023): 48–52. http://dx.doi.org/10.37547/ajast/volume03issue03-09.

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This article provides a broad understanding of the fact that architectural monuments remain under man-made influences, different from natural ones, and measures to simulate these influences. Each architectural monument has a specific building style of its time. It was observed that the outer barrier structures of the Ark fortress fell under the influence of man-made, leading to the destruction of their structures. Accordingly, it is illuminated that the objects of the architectural monument are not an optimal solution to the surroundings and protected areas for conducting cultural and educational events.
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21

Grima, Joseph N., Roberto Caruana-Gauci, Daphne Attard, and Ruben Gatt. "Three-dimensional cellular structures with negative Poisson's ratio and negative compressibility properties." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2146 (2012): 3121–38. http://dx.doi.org/10.1098/rspa.2011.0667.

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A three-dimensional cellular system that may be made to exhibit some very unusual but highly useful mechanical properties, including negative Poisson's ratio (auxetic), zero Poisson's ratio, negative linear and negative area compressibility, is proposed and discussed. It is shown that such behaviour is scale-independent and may be obtained from particular conformations of this highly versatile system. This model may be used to explain the auxetic behaviour in auxetic foams and in other related cellular systems; such materials are widely known for their superior performance in various practical applications. It may also be used as a blueprint for the design and manufacture of new man-made multifunctional systems, including auxetic and negative compressibility systems, which can be made to have tailor-made mechanical properties.
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22

COLLINS, CHRIS, PAUL M. POSTAL, and ELVIS YEVUDEY. "Negative polarity items in Ewe." Journal of Linguistics 54, no. 2 (2017): 331–65. http://dx.doi.org/10.1017/s002222671700007x.

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Collins & Postal (2014) argue that English NPIs have two distinct syntactic structures: a unary NEG structure and a binary NEG structure. They suggest that this distinction is generally valid for natural languages. This formal difference was taken to reconstruct the common distinction in NPI studies between strong and weak NPIs. The present analysis of Ewe NPIs seeks to provide cross-linguistic support for this dual conception of NPIs by showing that the ke-NPIs in this language are all properly analyzed exclusively as unary NEG structures.
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23

Ebrahimi, Nader. "Bivariate processes with positive or negative dependent structures." Journal of Applied Probability 24, no. 1 (1987): 115–22. http://dx.doi.org/10.2307/3214064.

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In this paper various notions of positive and negative dependence for bivariate stochastic processes are introduced and their interrelationship is studied. Examples are given to illustrate these concepts.
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24

Minkov, G. M., A. V. Germanenko, O. E. Rut, O. I. Khrykin, V. I. Shashkin, and V. M. Danil’tsev. "Low-field negative magnetoresistance in double-layer structures." Physical Review B 62, no. 24 (2000): 17089–93. http://dx.doi.org/10.1103/physrevb.62.17089.

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25

Křístek, Vladimír, and Jiři Studnička. "Negative Shear Lag in Flanges of Plated Structures." Journal of Structural Engineering 117, no. 12 (1991): 3553–69. http://dx.doi.org/10.1061/(asce)0733-9445(1991)117:12(3553).

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26

Sarlis, A. A., D. T. R. Pasala, M. C. Constantinou, A. M. Reinhorn, S. Nagarajaiah, and D. P. Taylor. "Negative Stiffness Device for Seismic Protection of Structures." Journal of Structural Engineering 139, no. 7 (2013): 1124–33. http://dx.doi.org/10.1061/(asce)st.1943-541x.0000616.

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27

Xu, Chun, Xiaochuang Xu, Dezhuan Han, Xiaohan Liu, Chung Ping Liu, and Chih Jung Wu. "Photonic quantum-well structures containing negative-index materials." Optics Communications 280, no. 1 (2007): 221–24. http://dx.doi.org/10.1016/j.optcom.2007.07.041.

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28

Liu, Daipei, Steffen Marburg, Christian Geweth, and Nicole Kessissoglou. "Non-Negative Intensity for Structures with Inhomogeneous Damping." Journal of Theoretical and Computational Acoustics 27, no. 01 (2019): 1850050. http://dx.doi.org/10.1142/s2591728518500500.

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In this work, numerical methods to identify the surface areas of a vibrating structure that radiate sound are implemented for cases of structures with inhomogeneous distributions of viscous Rayleigh damping. The intensity-based techniques correspond to acoustic intensity evaluated in terms of the acoustic pressure and particle velocity, non-negative intensity evaluated in terms of the acoustic impedance matrix obtained at the structural surface, and back-calculated non-negative intensity evaluated in terms of the acoustic impedance matrix obtained at a far-field receiver surface. Different configurations of inhomogeneous damping are applied to two elastic structures corresponding to a plate and a cylindrical shell. To examine the influence of inhomogeneous damping on sound radiation, the acoustic intensity on the structural surface, the acoustic intensity on several different far-field receiver surfaces, non-negative intensity and back-calculated non-negative intensity are numerically compared for different inhomogeneous damping cases.
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29

Haberman, Michael R., Carolyn C. Seepersad, and Preston S. Wilson. "Vibration damping and isolation using negative stiffness structures." Journal of the Acoustical Society of America 138, no. 3 (2015): 1920. http://dx.doi.org/10.1121/1.4934041.

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30

Barnes, D. L., W. Miller, K. E. Evans, and A. Marmier. "Modelling negative linear compressibility in tetragonal beam structures." Mechanics of Materials 46 (March 2012): 123–28. http://dx.doi.org/10.1016/j.mechmat.2011.12.007.

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31

Ebrahimi, Nader. "Bivariate processes with positive or negative dependent structures." Journal of Applied Probability 24, no. 01 (1987): 115–22. http://dx.doi.org/10.1017/s0021900200030667.

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In this paper various notions of positive and negative dependence for bivariate stochastic processes are introduced and their interrelationship is studied. Examples are given to illustrate these concepts.
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32

Shan, Sicong, Sung H. Kang, Zhenhao Zhao, Lichen Fang, and Katia Bertoldi. "Design of planar isotropic negative Poisson’s ratio structures." Extreme Mechanics Letters 4 (September 2015): 96–102. http://dx.doi.org/10.1016/j.eml.2015.05.002.

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33

Kul’bachinskii, V. A., V. G. Kytin, R. A. Lunin та ін. "Negative persistent photoconductivity in GaAs (δ-Sn) structures". Journal of Experimental and Theoretical Physics 89, № 6 (1999): 1154–59. http://dx.doi.org/10.1134/1.559065.

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34

Ryzhii, V. "Negative differential infrared photoconductivity in quantum-dot structures." Physica E: Low-dimensional Systems and Nanostructures 12, no. 1-4 (2002): 868–71. http://dx.doi.org/10.1016/s1386-9477(01)00454-4.

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35

Pasternak, E., and A. V. Dyskin. "Materials and structures with macroscopic negative Poisson’s ratio." International Journal of Engineering Science 52 (March 2012): 103–14. http://dx.doi.org/10.1016/j.ijengsci.2011.11.006.

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36

Lin, Ling, and Richard J. Blaikie. "Negative permeability using planar-patterned metallic multilayer structures." Journal of Optics A: Pure and Applied Optics 9, no. 9 (2007): S385—S388. http://dx.doi.org/10.1088/1464-4258/9/9/s17.

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37

Igityan, A., N. Aghamalyan, R. Hovsepyan, et al. "Negative Differential Conductivity of Lanthanum-Oxide-Based Structures." Semiconductors 54, no. 2 (2020): 163–68. http://dx.doi.org/10.1134/s1063782620020104.

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38

Xue, Xin, Congcong Lin, Fang Wu, Zeyu Li, and Juan Liao. "Lattice structures with negative Poisson’s ratio: A review." Materials Today Communications 34 (March 2023): 105132. http://dx.doi.org/10.1016/j.mtcomm.2022.105132.

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39

Manimala, James M., Hsin Haou Huang, C. T. Sun, Robert Snyder, and Scott Bland. "Dynamic load mitigation using negative effective mass structures." Engineering Structures 80 (December 2014): 458–68. http://dx.doi.org/10.1016/j.engstruct.2014.08.052.

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40

Iemura, Hirokazu, Akira Igarashi, Mulyo Harris Pradono, and Afshin Kalantari. "Negative stiffness friction damping for seismically isolated structures." Structural Control and Health Monitoring 13, no. 2-3 (2006): 775–91. http://dx.doi.org/10.1002/stc.111.

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41

Ho, Viet Hung, Duc Tam Ho, Soon-Yong Kwon, and Sung Youb Kim. "Negative Poisson's ratio in periodic porous graphene structures." physica status solidi (b) 253, no. 7 (2016): 1303–9. http://dx.doi.org/10.1002/pssb.201600061.

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42

Muñoz, Vicente, Matthias Schütt, and Aleksy Tralle. "Negative Sasakian structures on simply-connected $5$-manifolds." Mathematical Research Letters 29, no. 6 (2022): 1827–57. http://dx.doi.org/10.4310/mrl.2022.v29.n6.a9.

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43

Mochida, Y., S. Ilanko, and D. Kennedy. "Attaching negative structures to model cut-outs in the vibration analysis of structures." Computers & Structures 184 (May 2017): 14–24. http://dx.doi.org/10.1016/j.compstruc.2017.02.003.

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44

Buchacz, Andrzej, and Damian Gałęziowski. "Negative Resistance in Discrete Mechatronic Systems." Solid State Phenomena 260 (July 2017): 127–31. http://dx.doi.org/10.4028/www.scientific.net/ssp.260.127.

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In the paper, the problem of negative resistance has been studied. Considered systems are limited to mechatronic discrete structures that contains mechanical part and piezoelectric actuator in form of stack, connected to external electric network that include the resistance elements which can have and receive negative values. The study have been done based on examples of branched structures, received as a result of solving the reverse task, and is aimed for parameters, limits and constrains evaluation. The paper extends possible applications of piezostack actuators and applied configurations that utilize negative resistance for vibration control.
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45

Sayar, Serim Dogac, Scott Baker, Ioan Nistor, and Jorge Gutierrez Martinez. "HYDRAULIC PERFORMANCE OF ECOFRIENDLY BREAKWATER ARMOUR UNITS." Coastal Engineering Proceedings, no. 38 (May 29, 2025): 52. https://doi.org/10.9753/icce.v38.structures.52.

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Traditional coastal defence structures tend to foster less diverse aquatic populations and larger concentrations of invasive species than natural habitats, which can be harmful to the ecosystem (Firth et al., 2016). There is growing interest in implementing principles and methods of ecological engineering, which combines ecosystems with engineering principles to develop coastal structures to decrease their negative environmental effects. When designing coastal constructions, ecoengineering has the potential to build sustainable coastal protection structures and to improve coastal habitat. Developing eco-friendly breakwater design guidelines represents a new and inherent progression step for coastal ecoengineering.
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46

R., Shobana, and Dinakaran M. "PROBLEMS OF TAMIL LEARNERS OF ENGLISH IN FORMING NEGATIVE AND INTERROGATIVE STRUCTURES." International Journal of Interdisciplinary Research in Arts and Humanities 3, no. 1 (2018): 313–14. https://doi.org/10.5281/zenodo.1296419.

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The mistakes which recur in the scripts of the Tamil speakers of English occur in the formation of negative and interrogative structures. Though different methods like Direct, Indirect….etc have been adopted and miscellaneous practices have been exercised, but they are of no avail. The root of the mistakes lies in the absence of the auxiliary verbs in Tamil. For example, the functions of the auxiliary verbs are fulfilled by words like ‘vendum’, ‘kudathu’, ‘.lam’, ‘mudiyum’…etc. But, in English, ‘must’, ‘must not’, ‘may’, ‘can’...etc are indicating the functions like obligation, probability  and ability. Similarly, the functions of the be-verbs as auxiliary verbs are indicted by the inflections of the main verbs in Tamil. The paper is focusing on such inflections of Tamil and tries to show how the first language of Tamil learners differs from English in handling the interrogative and negative sentences. It attempts to make the Tamil learners understand the verbal structures of Tamil and the differences between Tamil and English. This understanding is vital for the Tamil learners of English to overcome the mistakes that recur in the formation of the negative and interrogative structures.
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47

Ren, Bin, Laurent Pueyo, Guangtun Ben Zhu, John Debes, and Gaspard Duchêne. "Non-negative Matrix Factorization: Robust Extraction of Extended Structures." Astrophysical Journal 852, no. 2 (2018): 104. http://dx.doi.org/10.3847/1538-4357/aaa1f2.

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48

Kasymov, Nadimulla Khabibullaevich, Ruzmat Normatovich Dadazhanov, and Sarvar Kurbonmiratovich Djavliev. "Structures of degrees of negative representations of linear orders." Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, no. 12 (2021): 31–55. http://dx.doi.org/10.26907/0021-3446-2021-12-31-55.

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49

Afanas'ev, Sergey A., Irina V. Fedorova, and Dmitriy I. Sementsov. "Controllable tunneling of planar structures containing single-negative layers." European Physical Journal Applied Physics 95, no. 2 (2021): 20501. http://dx.doi.org/10.1051/epjap/2021210121.

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The possibility of perfect (i.e. non-reflective) tunneling of microwave radiation through planar structures containing layers with negative material parameters is investigated. A symmetric trilayer is considered, including two ferrite layers, which are magnetized by an external field. The conditions of perfect tunneling are obtained analytically using the transfer matrix method. By the numerical solution of the obtained equations, the positions of the highest transmission peaks in the spectrum of the structure are determined. The controllability of the transmission spectra due to the external magnetic field is shown.
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50

Chui, S. T., C. T. Chan, and Z. F. Lin. "Multilayer structures as negative refractive and left-handed materials." Journal of Physics: Condensed Matter 18, no. 6 (2006): L89—L95. http://dx.doi.org/10.1088/0953-8984/18/6/l02.

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