Wire Metamaterials: Physics and Applications

Abstract

The physics and applications of a broad class of artificial electromagnetic materials composed of lattices of aligned metal rods embedded in a dielectric matrix are reviewed. Such structures are here termed wire metamaterials. They appear in various settings and can operate from microwaves to THz and optical frequencies. An important group of these metamaterials is a wire medium possessing extreme optical anisotropy. The study of wire metamaterials has a long history, however, most of their important and useful properties have been revealed and understood only recently, especially in the THz and optical frequency ranges where the wire media correspond to the lattices of microwires and nanowires, respectively. Another group of wire metamaterials are arrays and lattices of nanorods of noble metals whose unusual properties are driven by plasmonic resonances.

Multi-Mode Broadband Power Transfer Through a Wire Medium Slab (Invited Paper)

“…Not only propagating TM-waves impinging the WM slab convert into TEM-modes, so do evanescent TM-waves, too. Therefore, the canalization creates at the rear side of the WM slab a subwavelength image of a radiating or scattering object located at the front side [1,[4][5][6][7][8]. The object field distribution remains undistorted and strong in the amplitude even if the slab is as thick as several wavelengths [6][7][8].…”

“…Wire metamaterials attract attention of researchers because these media can be used in many applications, covering a huge range of frequencies from microwaves to visible light [1]. Among various known topologies, the simple wire media (WM) -arrays of parallel metal wires either completely located in a dielectric matrix or partially free standing -are, probably, most popular due to their relatively simple design and easy manufacturing.…”

Magnetically Tuned Two-Component Microwave Metamaterial

“…where is obtained in [11], and yy is given in [13] for the case of very thin PEC cylinders. It is also assumed that a = 0.001m, r = 0.00034m, α in = 0.5.…”

Волноводные Устройства На Основе Линейных Дефектов В Металлических Электромагнитных Кристаллах

“…Кроме того, большой интерес вызывает наличие у фотонных кристаллов ярко выраженной дисперсии, причем как частотной, так и пространственной, что открывает ши-рокие возможности для их весьма разнообразных прак-тических приложений [2]. Применительно к метаматери-алам основной интерес в подобных структурах вызывает необычный характер отражений и преломлений волн на их границах, вызванный аномальными -в том числе и отрицательными -значениями эффективных проница-емостей таких структур, с чем, например, связываются возможные существенные изменения в технике переда-чи оптических изображений, в частности, преодоление дифракционного предела [3].…”