Results 61 to 70 of about 42,935 (288)

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

Method for extracting the surface impedance of a generic reflective metasurface

Scientific Reports
We develop a method for the extraction of the surface impedance tensor of a generic reflective metasurface using an analytic relation between the tensorial surface impedance and the four polarisation-dependent reflection coefficients.
J. G. Smith, I. R. Hooper, N. Clow, A. P. Hibbins, S. A. R. Horsley   +4 more
doaj   +1 more source

SAR Reduction Using Integration of PIFA and AMC Structure for Pentaband Mobile Terminals

International Journal of Antennas and Propagation, 2017
In this paper, a capacitive grating artificial magnetic conductor (AMC) is presented to reduce the specific absorption rate (SAR) in pentaband mobile terminals. The AMC structure is implemented using a dielectric film with the printed arrays of the metal
Jae-Gon Lee, Jeong-Hae Lee
doaj   +1 more source

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

Simultaneous anomalous reflection and polarization conversion from a tensorial impedance metasurface

npj Metamaterials
We demonstrate a method for designing metasurfaces that both anomalously reflect and polarization-convert upon reflection, using two examples that convert a transverse-magnetic-polarized plane wave into 1) a transverse-electric-polarized plane wave, and ...
Jonathon George Smith, Ian Richard Hooper, Nathan Clow, Alastair Paul Hibbins, Simon Arthur Robin Horsley   +4 more
doaj   +1 more source

Tunable Electromagnetically Induced Transparent Window of Terahertz Metamaterials and Its Sensing Performance

Applied Sciences, 2022
The electromagnetically induced transparency effect of terahertz metamaterials exhibits excellent modulation and sensing properties, and it is critical to investigate the modulation effect of the transparent window by optimizing structural parameters. In
Zhenlin Wu, Peiyao An, Menghan Ding, Yanan Qi, Lin Zhang, Shaoshuai Han, Di Lian, Changming Chen, Xin Yang   +8 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

Nanomechanical metamaterial light modulators

, 2014
Reconfigurable photonic metamaterials provide a flexible platform for thermo-optical, electro-optical, magneto-optical and all-optical modulation of metamaterial properties.
Ou, J-Y., Valente, J., Plum, E., Cencillo Abad, P.M., Zheludev, N.I.   +4 more
core   +1 more source

Tuning chirality in photonic metamaterials with semiconductor quantum dots [PDF]

, 2009
Recently we have shown that the classical phenomenon of optical activity, which is traditionally associated with chirality (helicity) of organic molecules, proteins and inorganic structures, can be observed in artificial planar media which exhibit ...
Fedotov, V.A., Liu, X.-X., X.-X. Liu, Chen, Y., Y. Chen, V. A. Fedotov, Plum, E., Tsai, D.P., D. P. Tsai, Zheludev, N.I., E. Plum, N. I. Zheludev   +11 more
core   +2 more sources

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