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Showing 1 to 20 of 184 for “"metamaterial"”.
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Metamaterial enhanced coupling
In the past decade interest in metamaterials has risen dramatically. This is due, in large part, to metamaterials' ability to exhibit electromagnetic behavior not normally found in nature. This is because these artificial structures display a strong electromagnetic response as a result of their …
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Self-Optimizing Metamaterial Antennas
The reconfigurable holographic metamaterial antenna is an attractive new technology for satellite communications, particularly in mobile applications. This antenna is thin, light-weight, consumes little power to operate, and is inexpensive to manufacture. Yet, perhaps its most promising attribute …
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Acoustic metamaterial design and applications
The explosion of interest in metamaterials is due to the dramatically increased manipulation ability over light as well as sound waves. This material research was stimulated by the opportunity to develop an artificial media with negative refractive index and the application in superlens which …
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Directive antenna using metamaterial substrates
… simulations have been carried out on different metamaterials in the microwave regime. One is transmission and reflection of a unit cell in a waveguide, and the other is parallel plate slab farfield radiation. The S-parameters are obtained from the wave-guide simulation and are used to retrieve …
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Multispectral Metamaterial Detectors for Smart Imaging
… array. To achieve this goal, we investigate metamaterials to realize multicolor detectors with enhanced quantum efficiency for similar function to a human retina. The key idea is to engineer the pixel such that it not only has the ability to sense multimodal data such as color, polarization, …
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Metamaterial Enhanced Wireless Power Transmission System
… of WPT systems, but the relatively new field of metamaterials (MTMs) has yet to play a dominate role in improving system performance. A gradient index (GRIN) MTM lens was designed using Ansoft’s High Frequency Structure Simulator (HFSS) to improve antenna gain and thereby increase WPT system …
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Development of conformal reconfigurable metamaterial-based antennas
… the design of flexible low-cost antennas using metamaterial loadings with performance characteristics that can be reconfigured by employing microfluidics. In applications such as biomedicine, this work presents an inkjet-printed dipole antenna on flexible Kapton-foam substrate to be used on …
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Fabrication and Characterization of Superconducting Metamaterial Resonators
… Recent research efforts into artificial metamaterials have yielded microwave and optical systems with numerous counterintuitive properties, including left-handed transmission, where the group velocity and phase velocity for a wave point in opposite directions. Metamaterial resonators …
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Graphene Integrated Metamaterial Devices for Terahertz Modulation
… and develop novel device architectures using metamaterial arrays to strongly couple with THz radiation, whilst implementing electrically tunable graphene to modify the strength and nature of this interaction, leading to active control of the amplitude, phase, polarisation and frequency of THz …
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Anomalous Nature Of Metamaterial Inclusion and Compact Metamaterial-Inspired Antennas Model For Wireless Communication Systems. A Study of Anomalous Comportment of Small Metamaterial Inclusions and their Effects when Placed in the Vicinity of Antennas, and Investigation of Different Aspects of Metamaterial-Inspired Small Antenna Models
Metamaterials are humanly engineered artificial electromagnetic materials which produce electromagnetic properties that are unusual, yet can be observed readily in nature. These unconventional properties are not a result of the material composition but rather of the structure formed. The objective …
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All-optical metamaterial modulators : fabrication, simulation and characterization
Artificially structured composite metamaterials consist of sub-wavelength sized structures that exhibit unusual electromagnetic properties not found in nature. Since the first experimental verification in 2000, metamaterials have drawn considerable attention because of their broad range of …
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Multimode Circuit Quantum Electrodynamics With Superconducting Metamaterial Resonators
… and generating complex entangled states. Metamaterial resonant structures made from arrays of superconducting lumped circuit elements can exhibit microwave mode spectra with left-handed dispersion, resulting in a high density of modes in the same frequency range where superconducting …
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Novel Metamaterial Blueprints and Elements for Electromagnetic Applications
… invariance of Maxwell's equations to design metamaterial blueprints for three novel electromagnetic devices. The metric invariance of Maxwell's equations here means that the effects of an (hypothetical) distortion of the background spatial domain on the electromagnetic fields can be mimicked …
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Design and experimental testing of metamaterial-based agitators
… based on current dry cooling systems. Several metamaterial-based agitators were assembled with a commercial extruded heat sink where experimental testing was conducted to investigate the validity of the modified configuration. Vortex-induced vibrations (VIV) of structures have attracted much …
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Thermally tunable band gaps in architected metamaterial structures
… of periodicity and locally resonant features in metamaterial structures, or meta-structures, give rise to unique wave propagation characteristics such as relatively low and wide band gaps. These meta-structures have a fixed geometry and thus a fixed behavior, however applications that require …
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Pattern reconfigurable metamaterial antenna for 5G base station network
… avoiding interference, and economizing power. Metamaterials, on the other hand, are commonly used in antenna design to enhance the gain, bandwidth, and efficiency and recently to tilt the radiation beam. Nonetheless, few issues had been encountered especially when the frequency is pushed to …
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Optomechanical Devices and Sensors Based on Plasmonic Metamaterial Absorbers
… Optical absorbers based on plasmonic metamaterials can absorb light resonantly at the operating wavelengths with up to 100% efficiency. We have explored plasmonic absorbers at infrared wavelengths for thermal detectors, e.g. a gold nanostrip antenna absorber that can absorb 10-times …
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Aluminum nitride microelectromechanical infrared detectors with integrated metamaterial absorbers
… detectors based on the seamless integration of metamaterial (MM) structures with microelectromechanical (MEMS) AlN resonators. Historically, uncooled absorbers have been limited in two key metrics: selectivity, the ability to distinguish distinct wavelengths of incident light, and sensitivity, …
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Numerical Study of Metamaterial-Inspired Water Wave Control Technologies
… development. The application of electromagnetic metamaterial concepts to water wave control technologies presents a promising approach, enabling wave redirection, concentration, cloaking, and sheltering. This study presents a numerical investigation using advanced computational fluid dynamics …
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