Results 71 to 80 of about 75,153 (270)
A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials
Advanced Engineering Materials, EarlyView.This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline +2 more
wiley +1 more source
2D Ray Tracing Analysis of a Dynamic Metasurface Antenna as a Smart Motion Detector
IEEE Access, 2019 We present a ray-tracing analysis of a smart motion detector based on a dynamically reconfigurable metasurface antenna (DMA). A DMA consists of an array of metamaterial radiators excited by a single-port waveguide or cavity.
Oren S. Mizrahi +4 more
doaj +1 more source
Detecting Motion in a Room Using a Dynamic Metasurface Antenna
IEEE Access, 2020 Sensing motion and distinguishing its source as human or nonhuman, with high precision, has tremendous applications in a variety of areas from health monitoring to energy efficiency.
Alexander X. Oesterling +4 more
doaj +1 more source
Second harmonic generation in amorphous silicon-on-silica metamaterial
APL Photonics, 2021 We demonstrate second harmonic generation by using an amorphous silicon metamaterial fabricated on the tip of an optical fiber that collects the generated light.
Jie Xu +3 more
doaj +1 more source
Applicability of point dipoles approximation to all-dielectric metamaterials [PDF]
, 2015 All-dielectric metamaterials consisting of high-dielectric inclusions in a low-dielectric matrix are considered as a low-loss alternative to resonant metal-based metamaterials.
Andryieuski, A. +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.This study examines how pore shape and manufacturing‐induced deviations affect the mechanical properties of 3D‐printed lattice materials with constant porosity. Combining µ‐CT analysis, FEM, and compression testing, the authors show that structural imperfections reduce stiffness and strength, while bulk material inhomogeneities probably enhance ...
Oliver Walker +5 more
wiley +1 more source
Materials & DesignMicrowave absorbing materials (MAMs) are used to prevent electromagnetic pollution and enhance equipment stealth. However, their limited absorption intensity and narrow effective bandwidth restrict their applicability.
Guodong Han +10 more
doaj +1 more source
Giant magnetic modulation of a planar, hybrid metamolecule resonance
New Journal of Physics, 2014 Coupling magnetic elements to metamaterial structures creates hybrid metamolecules with new opportunities. Here we report on the magnetic control of a metamolecule resonance, by utilizing the interaction between a single split ring resonator (SRR) and a ...
Simon A Gregory +4 more
doaj +1 more source
Microwatt Volatile Optical Bistability via Nanomechanical Nonlinearity
Advanced Science, 2023 Metastable optically controlled devices (optical flip‐flops) are needed in data storage, signal processing, and displays. Although nonvolatile memory relying on phase transitions in chalcogenide glasses has been widely used for optical data storage ...
Dimitrios Papas +3 more
doaj +1 more source
Enhanced parametric processes in binary metamaterials
, 2005 We suggest double-resonant (binary) metamaterials composed of two types of magnetic resonant elements, and demonstrate that in the nonlinear regime such metamaterials provide unique possibilities for phase-matched parametric interaction and enhanced ...
Ilya V. Shadrivov +4 more
core +1 more source