Results 101 to 110 of about 2,253,922 (294)
Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media
Advanced Materials Technologies, EarlyView.Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco +4 more
wiley +1 more source
Millimetre wave imaging for concealed target detection [PDF]
, 2011 PhDConcealed weapon detection (CWD) has been a hot topic as the concern about pub- lic safety increases. A variety of approaches for the detection of concealed objects on the human body based on earth magnetic ¯eld distortion, inductive magnetic ¯eld,
Zhang, Lianhong
core +2 more sources
Advanced Materials Technologies, EarlyView.Copper electroplating transforms lightweight 3D‐printed TPMS polymer lattices into effective electromagnetic shields. Topology, relative density, and conductive seed layer continuity govern copper penetration, electrical resistance, and attenuation. SEA consistently exceeds SER, while 35% RD Diamond lattice gives the best performance, reaching 48.72 dB
Aman Al Khatib +6 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.This study demonstrates short, length‐independent group delay supported by topological edge states in open Su–Schrieffer–Heeger networks. Strong boundary port coupling enables an order‐of‐magnitude latency reduction compared to bulk modes, alongside robust protection against bulk disorder.
Yu‐Han Chang +11 more
wiley +1 more source
A novel frequency-dependent lattice Boltzmann model with a single force term for electromagnetic wave propagation in dispersive media. [PDF]
Sci Rep, 2023 Ma H +8 more
europepmc +1 more source
Wood Carbon Sponge/SiO<sub>2</sub> Aerogel Composites with Anisotropic Broadband Microwave Absorption, Elastic Resilience, and Thermal Insulation. [PDF]
Adv Sci (Weinh)Anisotropic wood carbon sponge/SiO2 aerogel composites are constructed, revealing a robust direction‐dependent permittivity ordering (tangential > radial > axial). The radial direction delivers an ultra‐broadband effective absorption bandwidth of 11.6 GHz at only 4.95 mm, while the tangential direction offers superior compressibility and thermal ...
Sun S +7 more
europepmc +2 more sources
Advanced Materials Technologies, EarlyView.A THz metasurface device integrating a metal–dielectric–metal resonator with microwall‐defined recessed regions enables spatially guided, label‐free sensing of micrometer‐scale plastic particles. The as‐fabricated devices exhibit distinct THz reflection resonances for 3.1‐µm polystyrene particles and a concentration‐dependent resonance‐frequency‐shift ...
Naoki Inomata +2 more
wiley +1 more source
Measurement, data analysis and modeling of electromagnetic wave propagation gain in a typical vegetation environment. [PDF]
PLoS One, 2023 Zhang C +5 more
europepmc +1 more source
Electromagnetic Wave Propagation in Photonic Nanoplates [PDF]
In this study, an investigation into the behaviour of electromagnetic wave propagation in a nanoplate, utilizing Eringen’s model, which is rooted in nonlocal theory, is conducted. This model accounts for the interaction of atoms that are at a significant
Basmaci, Ayse Nihan, Filiz, Seckin
core +1 more source
Advanced Optical Materials, EarlyView.Low‐index and low‐loss vdW muscovite represents an emerging robust dielectric platform for the creation of next‐generation all‐vdW nanophotonic architectures. Its utilization as a low‐index building‐block in all‐vdW multilayers enables extreme optical contrast when paired with MoS2, paving the way to the realization of few‐layer ultrathin DBS ...
Meri H. Hayrapetyan +10 more
wiley +1 more source