Imaging with metamaterials pdf
Witryna14 kwi 2024 · We report on spin ratchet currents driven by terahertz radiation electric fields in a Co/Pt magnetic metamaterial formed by triangle-shaped holes forming an antidot lattice and subjected to an external magnetic field applied perpendicularly to the metal film plane. We show that for a radiation wavelength substantially larger than the … Witryna21 kwi 2015 · We propose and theoretically explore terahertz amplification, based on stimulated generation of plasmons in graphene asymmetric hyperbolic metamaterials (AHMM), strongly coupled to terahertz radiation. In contrast to the terahertz amplification in resonant nanocavities, AHMM provides a wide-band THz amplification without any …
Imaging with metamaterials pdf
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Witryna15 lut 2024 · View PDF; Download full issue; Physics Letters A. Volume 389, 15 February 2024, ... imaging systems, remote sensors and radiometers. Graphical abstract. Download : Download high-res image (104KB) Download : Download full-size image; ... Enhancement of microwave imaging using a metamaterial lens. IEEE Sens. J., 19 … Witryna13 maj 2014 · Compressive imaging has brought revolutionary design methodologies to imaging systems. By shuffling and multiplexing the object information space, the imaging system compresses data on the physical layer and enables employing fewer sensors and acquiring less data than traditional isomorphic mapping imaging …
Witryna14 gru 2024 · This metamaterial leaky wave antenna (which has been termed a metaimager) operates by using frequency diversity and thus can be classified as … WitrynaWe use a 1D metamaterial aperture to per-form compressed imaging of various 2D (one angle plus range) canonically sparse scenes. Our imaging device consists of a …
WitrynaMetamaterials [25,34,46,53] o er promising perspectives in many applications of wave engineering, such as sensing [16,28], imaging [5,47,63], focusing [10,52], cloaking [8,49] and guiding [17,18,61]. These are structures lled with heterogeneities much smaller than the wavelength, which behave, as the size of the heterogeneities WitrynaAll optimized HEMMs are fully proved to support the subwavelength imaging. In particular, we demonstrate that a single-phase metamaterial with suitable constraints can exhibit the hyperbolic dispersion at the ultra-low frequency range, implying the comparable capacity of manipulating elastic waves as in the multi-phase local …
WitrynaSébastien Guenneau. Presents the first book on acoustic metamaterials. Offers a comprehensive review of recent theoretical and numerical results on negative refraction, lensing and cloaking effects for acoustic and elastic waves in structured materials. Covers the emerging research frontier of the novel field of acoustic metamaterials.
Witryna1 wrz 2013 · Request PDF THz imaging with metamaterials Metamaterials have demonstrated the ability to efficiently alter electromagnetic radiation in the terahertz … how many chinese radicalsWitryna8 kwi 2024 · Download : Download high-res image (2MB) Download : Download full-size image Fig. 3. Designs of metamaterials based on spatial coordinate perturbations (a) the dimensions and boundary conditions of the FE model; (b) the normalized macroscopic stress–strain relation of a parent periodic FCC lattice; (c, d and e) the … how many chinese people died from communismWitrynaSub-wavelength image manipulating through compensated anisotropic metamaterial prisms Junming Zhao, Yijun Feng*, Bo Zhu, Tian Jiang Department of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, CHINA *Corresponding author: [email protected] Abstract: Based on the concept of sub … how many chinese people in mexicoWitrynathe metamaterial was shifted, introducing a significant inten-sity modulation at the resonance frequency. A 20% shift in the metamaterial resonance frequency was obtained when varying the optical power from 0 to 500 mW at an optical wavelength of 800nm, leading to a 70% modulation depth at 1.06 THz. high school mack plaque pep rally fall 2017Witryna18 sty 2013 · The single channel system can be applied to decode a photoacoustic image from the received Single-pixel imaging with metamaterials. (A) Metamaterial … high school mackayWitryna17 sty 2013 · By leveraging metamaterials and compressive imaging, a low-profile aperture capable of microwave imaging without lenses, moving parts, or phase shifters is demonstrated. This designer aperture allows image compression to be performed on the physical hardware layer rather than in the postprocessing stage, thus averting the … high school machine shop projectsWitrynaand solids.”1 Acoustic Metamaterials (AMMs) have also various application areas including subwavelength imaging, acoustic cloaking, transmission or reflection control, and surface wave manipulation.3 The investigations on acoustical metamaterials (AMMs) on the other hand are how many chinese people live in china