Results 91 to 100 of about 110,697 (224)
A metamaterial absorber based high gain directional dipole antenna
, 2018 A novel idea for generating directional electromagnetic beam using a metamaterial absorber for enhancing radiation from a microwave antenna in the S-band is presented herewith. The metamaterial structure constitutes the well-known stacked dogbone doublet
Sarin Valiyaveettil Pushpakaran +11 more
core +1 more source
Advanced Science, EarlyView.A flexible, hexagonally packed artificial dielectric providing a wide range of effective permittivities (εr ≈ 30–1400) without lumped elements was developed for clinical and ultra‐high‐field MRI. Combined with modular passive‐dipole arrays, the system enables adaptable RF field shaping through electric‐ and magnetic‐dipole tuning.
Santosh Kumar Maurya +2 more
wiley +1 more source
Multi-band and polarization insensitive metamaterial absorber
, 2011 —The design and realization of a multi-band and polariza-tion insensitive metamaterial absorber is presented. The structure with thickness 1.1mm consists of six close rings which distribute in two metallic layers separated by FR4 fiber glass PCB ...
H. Chen, L. Huang
core
Programmable Sequential 4D Actuation in Multistable Kirigami Metamaterials
Advanced Science, EarlyView.This study presents a modular kirigami metamaterial framework enabling programmable multistability and sequential 4D actuation. By coupling geometry‐controlled multistability with material‐dependent recovery kinetics, spatiotemporal deformation can be precisely programmed.
Eui‐Hyun Kim +3 more
wiley +1 more source
Dual‐Functional Terahertz Manipulation of EuBa2Cu3O7 Superconductors via Cooper Pair Dynamics
Advanced Science, EarlyView.We use a spintronic‐metasurface THz emitter to realize chiral THz generation. Using polarization‐tunable THz pulses, we investigate equilibrium and photoinduced THz responses in a 43 nm thick EuBa2Cu3O7 (EBCO) thin film. The EBCO film achieves 46.81 dB EMI shielding and 113% photoinduced THz modulation with 19.0 ps recovery, enabled by Cooper‐pair ...
Zhangshun Li +10 more
wiley +1 more source
Advanced Science, EarlyView.Magnetically guided macrophage immunobots integrate active tumor targeting with immunometabolic therapy. After systemic administration, magnetic actuation enhances immunobot retention and tumor penetration, while LPS‐functionalized FePt microrollers sustain M1‐like polarization through inflammatory and iron‐amplified oxidative signaling and trigger ...
Xirui Zeng +7 more
wiley +1 more source
Advances in Condensed Matter Physics, 2017 A novel metamaterial, which exhibits a wideband double negative behavior in X-band, is proposed, designed, and investigated in this paper. The metamaterial is composed of modified S-shaped split-ring resonators (S-SRR). The periodic structure is designed
Ahmed Mahmood +2 more
doaj +1 more source
Bioinspired Metastable Transient Peeling for Repeatable Rapid Release
Advanced Science, EarlyView.Inspired by the explosive seed ejection of the squirting cucumber, this work introduces metastable transient peeling that temporally regulates stored interfacial energy release via a tunable energy barrier. A viscoelastic hemispherical gripper achieves 52 ms ultrafast, residue‐free release with 300 000‐cycle durability, enabling damage‐free handling of
Lvzhou Li +8 more
wiley +1 more source
Microwave metamaterial absorber for sensing applications
Opto-Electronics Review, 2017 Abstract A metamaterial absorber (MA) based sensor is designed and analysed for various important applications including pressure, temperature, density, and humidity sensing. Material parameters, as well as equivalent circuit model have been extracted and explained.
Bakır, Mehmet +6 more
openaire +3 more sources
A Review:The development of metamaterial absorber.
, 2020 A metamaterial is an artificial resonant structure that is designed to obtain specific characteristics which are not naturally occurring in nature.
Jawatankuasa Kerja PSM UTHM
core