Tanasković, "Negative Refractive Index Metasurfaces for Enhanced Biosensing," Materials, vol. 4, p. 1, 2011.Jakšić Z., Vuković S., Matović J., Tanasković D., "Negative Refractive Index Metasurfaces for Enhanced Biosensing", Materials, 4 (1), pp. 1-36,; doi:10.3390/ma...
10,11. Here we report a 3D optical metamaterial having negative refractive index with a very high figure of merit of 3.5 (that is, low loss). This metamaterial is made of cascaded ‘fishnet’ structures, with a negative index existing over a broad spectral range. Moreover, it can readily...
The original loss-limited negative refractive index and the figure of merit (FOM) of the device have been drastically improved with loss compensation in the visible wavelength range between 722 and 738 nm. In this range, the NIM becomes active such that the sum of the light intensities in ...
In this work, we numerically and experimentally demonstrate that all-angle negative refraction can be obtained with the acoustic gradient metasurface of subwavelength thickness. The coiling labyrinthine structures are utilized to build the desired gradient metasurface, and the apparent negative refraction occ...
The proposed CCSRR unit cell structure has the epsilon negative metamaterial characteristics with complex refractive index values. The single negative region has been found from 6.51 GHz to 6.67 GHz, 10.65 GHz to 10.90 GHz, and 13.32 GHz to 13.42 GHz, respectively. There is also an analysis of...
Liu et al. proposed an ultra-sparse metasurface based on Mie resonance units for high-level reflection of low-frequency sound [39]. Fu et al. designed a 3D space-coiling metamaterial with both negative mass density and negative bulk modulus [44]. However, it is noteworthy that space-coiling...
Encyclopedia articles: photonic metasurfaces photonic crystals refractive index optical materialsBibliography [1] V. G. Veselago, “The electrodynamics of substances with simultaneously negative values of ε and μ”, Sov. Phys. Usp. 10, 509 (1968); https://doi.org/10.1070/PU1968v010n04ABEH00...
negative refractive indexterahertzA novel chiral metasurface (CMS) based on T-shaped resonators is proposed and investigated numerically. The CMS is composed of a periodic array of bi-layered conjugated fourfold T-shaped structure. The retrieved effective electromagnetic (EM) parameters indicate that ...
In natural materials, permittivity ε and permeability μ cannot be negative simultaneously, but if a certain material has negative values of both ε and μ24, the refractive index n becomes negative. The conventional materials with positive refractive index n have a positive value of the angle of...
metafluids because of their large attenuation that is mainly due to the strong resonant scattering15. Alternatively to bulky and lossy 3D metamaterials, acoustic metasurfaces25might be much more appropriate to manipulate acoustic wavefronts as recently demonstrated with soft gradient-index metasurfaces26...