Optical negative index metamaterials
WebNegative refractive index in artificial metamaterials. The effective permeability and the refractive index of nanofabricated media composed of pairs of identical gold nanopillars … WebJan 31, 2011 · Metamaterials showing negative refractive indexes, also called negative-index materials (NIMs), have also been demonstrated in the infrared range and at the …
Optical negative index metamaterials
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WebJan 1, 2011 · Optical Negative Index Metamaterials. Authors: Xuhuai Zhang Abstract Research of metamaterials focuses on unprecedented optical properties that may be obtained from composite media, and has... WebMar 9, 2016 · Materials with negative Poisson's ratio or negative refractive index are now classic examples. The effective mass density, which governs the propagation of elastic …
WebAug 5, 2010 · This study demonstrates the possibility of fabricating an optical negative-index metamaterial that is not limited by the inherent loss in its metal constituent. Main … WebJan 1, 2007 · A negative refractive index of n ′ = −0.3 ± 0.1 in the optical range was observed in 2005 at the telecommunication wavelength λ = 1.5 μm in an electron-beam-fabricated sample of paired rods (...
WebJan 1, 2006 · Both experiments and simulations demonstrate that a negative refractive index n' approximately -0.3 is achieved at the optical communication wavelength of 1.5 microm using the array of... Theoretical articles were published in 1996 and 1999 which showed that synthetic materials could be constructed to purposely exhibit a negative permittivity and permeability. These papers, along with Veselago's 1967 theoretical analysis of the properties of negative-index materials, provided the background to fabricate a metamaterial with …
WebPractical optical negative index materials based on coupled plasmon resonances must overcome reflection and absorption. Simulations show that matched impedance and …
WebJul 9, 2024 · The resonant wavelength increasing with the refractive index of the media makes the metamaterials potential platforms for both negative index structures and optical sensors. 1 Introduction The periodic arrangement of subwavelength elements is known to generate unique electromagnetic (EM) properties mostly governed by the geometry rather … how to spell sunshineWebJan 1, 2009 · 7.1 Recent Advances of Nonlinear Effects in Metamaterials. In all the preceding chapters, we studied the linear properties of optical metamaterials, assuming that the effective electric permittivity ε and magnetic permeability μ are independent of the incident light intensity. Indeed, an overwhelming portion of the experimental results on ... how to spell supercalifraWebMay 26, 2011 · A metamaterial is an artificial substance engineered to have unnatural properties, such as a negative refractive index. The possibility of creating optical negative-index metamaterials (NIMs) using metallic and dielectric (insulating) nanostructures has triggered intense basic and applied research over the past several years. 1–4 In view of … rdv aphrodite paray le monialWebAug 15, 2008 · Metamaterials are artificially designed subwavelength composites possessing extraordinary optical properties that do not exist in nature. They can alter the … how to spell sunny in japaneseWebJan 1, 2007 · Metamaterials can show unique advantages, such as negative refractive index [16], perfect lens [17], cloaking [18], which are not possessed by natural materials and … rdv ardennes gouv fr booking create 765WebLead Optical System Design and Applied R&D role with focus on the state-of-the-art optical science and technology applied in: optical measurement and inspection systems, imaging and non-imaging ... how to spell sulfurWebAug 5, 2010 · The recently emerged fields of metamaterials and transformation optics promise a family of exciting applications such as invisibility, optical imaging with deeply subwavelength resolution and nanophotonics with the potential for … rdv antony passeport