Results 51 to 60 of about 14,948 (260)

Full‐Field Damage Monitoring in Architected Lattices Using In situ Electrical Impedance Tomography

Advanced Functional Materials, EarlyView.
In situ electrical impedance tomography (EIT) turns 3D‐printed, CNT‐infused architected lattices into full‐field damage‐imaging systems. Tunable Voronoi‐based geometries act as active sensing architectures, enabling conductivity maps to detect early‐stage damage and localise sequential ligament fracture before catastrophic failure.
Akash Deep, Andrea Samore, Alistair McEwan, Andrew McBride, Shanmugam Kumar   +4 more
wiley   +1 more source

Global rotation of mechanical metamaterials induced by their internal deformation

AIP Advances, 2017
In this work, we propose the concept that a device based on mechanical metamaterials can be used to induce and control its own rotational motion as a result of internal deformations due to the conversion of translational degrees of freedom into ...
K. K. Dudek, R. Gatt, L. Mizzi, M. R. Dudek, D. Attard, J. N. Grima   +5 more
doaj   +1 more source

A guidance to intelligent metamaterials and metamaterials intelligence

Nature Communications
Abstract The bidirectional interactions between metamaterials and artificial intelligence have recently attracted immense interest to motivate scientists to revisit respective communities, giving rise to the proliferation of intelligent metamaterials and metamaterials intelligence.
Chao Qian, Ido Kaminer, Hongsheng Chen
openaire   +3 more sources

Mechanics of Telson Ridges in Mantis Shrimp for Impact Analysis and Implications for Bioinspired Elastic Shell Designs

Advanced Functional Materials, EarlyView.
The mantis shrimp telson reveals how ridged biological shields control deformation under impact. Inspired by this architecture, telson‐inspired ridged curved shells transform ridge geometry and macroscopic curvature into bidirectional snap‐through, tunable stiffness, and enhanced hysteretic energy dissipation for multifunctional architected materials ...
Phani Saketh Dasika, Adwait Trikanad, Wei Huang, Taige Hao, David Kisailus, Pablo D. Zavattieri   +5 more
wiley   +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, Gavin B G Stenning, Graham J Bowden, Nikolay I Zheludev, Peter A J de Groot   +4 more
doaj   +1 more source

Focusing Microwaves in the Fresnel Zone With a Cavity-Backed Holographic Metasurface

IEEE Access, 2018
We present the design and experimental demonstration of a cavity-backed, holographic metasurface capable of focusing microwaves in the Fresnel zone. The circular cavity consists of two stacked plates: microwaves are injected into the bottom plate via a ...
Vinay R. Gowda, Mohammadreza F. Imani, Timothy Sleasman, Okan Yurduseven, David R. Smith   +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, Mohammadreza F. Imani, Oren S. Mizrahi, Jonah N. Gollub, David R. Smith   +4 more
doaj   +1 more source

3D‐Printed Gradient Shape‐Memory Strain Sensors With Rewritable Gauge Factors

Advanced Functional Materials, EarlyView.
A 3D‐printed shape‐memory strain sensor combines thermomechanical programming with gradient architectural design. Preset strain rewrites the gauge factor (GF), while the gradient geometry amplifies the response through strain redistribution. Reprogrammable sensitivity enables the same sensor to detect weak pulse signals and monitor large‐amplitude ...
Xuan Zhang, Wenjie Qiao, Kaixin Jiang, Sherry Chen, Hanyu Cui, Kirsten Dyer, Xuefeng Zhu, Ting Wang, Xuehua Zhang, Ben Bin Xu, Jie Kong   +10 more
wiley   +1 more source

Pomb@Co3O4-based composites for ultra-wideband microwave absorption: A multi-scale perspective from micro-, meso- and meta-structure

Materials & Design
Microwave 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, Yudeng Wang, Zhaotang Liu, Song Zhao, Junxiang Zhou, Bo Feng, Sai Sui, Xiaoxia Tian, Jun Wang, Jiafu Wang, Shaobo Qu   +10 more
doaj   +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, Mohammadreza F. Imani, K. Parker Trofatter, Jonah N. Gollub, David R. Smith   +4 more
doaj   +1 more source