Articles with "unit cells" as a keyword



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Co-axial fed triple-band and dual-band zeroth order antennas using pseudo-open termination unit cells for C-band applications

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Published in 2019 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2019.03.003

Abstract: Abstract In this paper, a triple-band and dual-band zeroth order resonance (ZOR) epsilon negative antennas are proposed using two pseudo-open termination unit cells for the case where the shunt ZOR ( f sh ) is… read more here.

Keywords: open termination; termination unit; zor; pseudo open ... See more keywords
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Efficient meshing technique for textile composites unit cells of arbitrary complexity

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Published in 2020 at "Composite Structures"

DOI: 10.1016/j.compstruct.2020.112757

Abstract: Abstract Meso-scale unit cell models are often used to simulate mechanical behaviour of textile composites. Apart from reliable ways to create meso-scale geometries, such simulations require reliable meshing algorithms. While the former is made possible… read more here.

Keywords: unit; textile; unit cells; textile composites ... See more keywords
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Analysis of in-plane wave propagation in periodic structures with Sierpinski-carpet unit cells

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Published in 2017 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2017.02.020

Abstract: Abstract In this study, the dispersion relationships and characteristics of directional periodic structure waveguides with Sierpinski carpet unit cells were investigated. Finite element method was used to analyze the Sierpinski-carpet periodic structures with square Pb… read more here.

Keywords: sierpinski carpet; periodic structures; carpet unit; unit cells ... See more keywords
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Tunable Length and Optical Properties of CsPbX3 (X = Cl, Br, I) Nanowires with a Few Unit Cells.

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Published in 2017 at "Nano letters"

DOI: 10.1021/acs.nanolett.6b04381

Abstract: Perovskite nanostructures, both hybrid organo-metal and fully inorganic perovskites, have gained a lot of interest in the past few years for their intriguing optical properties in the visible region. We report on inorganic cesium lead… read more here.

Keywords: length optical; optical properties; unit cells; tunable length ... See more keywords
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Finite-size correction scheme for supercell calculations in Dirac-point two-dimensional materials

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Published in 2018 at "Scientific Reports"

DOI: 10.1038/s41598-018-27632-6

Abstract: Modern electronic structure calculations are predominantly implemented within the super cell representation in which unit cells are periodically arranged in space. Even in the case of non-crystalline materials, defect-embedded unit cells are commonly used to… read more here.

Keywords: finite size; unit; size correction; unit cells ... See more keywords
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Three dimensional metafilms with dual channel unit cells

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Published in 2017 at "Applied Physics Letters"

DOI: 10.1063/1.4979698

Abstract: Three-dimensional (3D) metafilms composed of periodic arrays of silicon unit cells containing single and multiple micrometer-scale vertical split ring resonators (SRRs) per unit cell were fabricated. In contrast to planar and stacked planar structures, these… read more here.

Keywords: three dimensional; dimensional metafilms; unit; dual channel ... See more keywords
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Systematic design of broadband path-coiling acoustic metamaterials

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Published in 2018 at "Journal of Applied Physics"

DOI: 10.1063/1.5009488

Abstract: A design approach for acoustic metamaterial unit cells based on a coiled path with impedance matching layers (IMLs) is proposed in this paper. A theoretical approach is developed to calculate the transmission of the labyrinthine… read more here.

Keywords: transmission; effective refractive; unit cells; refractive indices ... See more keywords
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Generating random unit cells.

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Published in 2022 at "Journal of applied crystallography"

DOI: 10.1107/s1600576722004423

Abstract: Methods of generating random unit-cell data for testing software are discussed. Working within the space S 6 appears to be the most expeditious. read more here.

Keywords: unit cells; random unit; generating random;
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Hybrid Reflectarray Antenna of Passive and Active Unit Cells for Highly Directive Two-Direction Beam Steering

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Published in 2023 at "IEEE Access"

DOI: 10.1109/access.2022.3232120

Abstract: A hybrid reflectarray antenna (RA) composed of passive and active unit cells that can steer a beam into two selected directions with high aperture efficiencies is designed and experimentally verified. The hybrid RA is implemented… read more here.

Keywords: unit cells; beam; unit; reflectarray antenna ... See more keywords
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Realization of Focused Beam and Shaped Beam Transmitarrays Based on Broadband Unit Cells

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Published in 2017 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2017.2717969

Abstract: A focused beam and a shaped beam four-layer transmitarray (TA) antenna operating in the $K$ -band have been designed, fabricated, and measured. Four-layer unit cells allowing a transmission phase range of 360° are used. The… read more here.

Keywords: shaped beam; beam shaped; unit cells; beam ... See more keywords
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Maximizing buckling load of metabeams via combinatorial optimization of microstructures

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Published in 2023 at "Modern Physics Letters B"

DOI: 10.1142/s021798492350077x

Abstract: Design of mechanical metamaterials is typically realized by repeating microstructured building blocks or unit cells. Microstructures of these unit cells can be identical, whereas individual design of each cell and various combinations of unit cells… read more here.

Keywords: unit cells; combinatorial design; buckling load; design ... See more keywords