Results 151 to 160 of about 33,091 (311)

Near- and mid-infrared bandgaps in a 1D photonic crystal containing superconductor and semiconductor-metamaterial

open access: yes, 2019
Das, NK ORCiD: 0000-0002-3396-4194By using the transfer matrix method, the theoretical investigation has been carried out in the near- and mid-infrared bandgaps for a periodic multilayered structure that was composed of superconductor (SC) and ...
A Saha (9720596)   +7 more
core   +1 more source

Extreme‐Thickness Meta‐Membrane for Controlling Terahertz Vectorial Beams

open access: yesAdvanced Science, EarlyView.
We propose ultra‐thin (λ/30) transmissive terahertz metasurfaces combining near‐field resonant and detour phases in coupled‐slit meta‐atoms, enabling continuous phase and polarization control beyond conventional designs. Based on leaky‐mode theory, scalar and vectorial terahertz Bessel beams at 0.39 THz are experimentally demonstrated, with ...
Yufei Song   +7 more
wiley   +1 more source

A Route to Terahertz Metamaterial Biosensor Integrated with Microfluidics for Liver Cancer Biomarker Testing in Early Stage

open access: yes, 2017
Engineered Terahertz (THz) metamaterials presented an unique characteristics for biosensing application due to their accurately tunable resonance frequency, which is in accord with vibrational frequency of some important biomolecules such as cancer ...
Hongda Chen   +4 more
core   +1 more source

Programmable Elastic Wave Control Via Mechanical‐Acoustic Interaction in Bistable Metamaterials

open access: yesAdvanced Science, EarlyView.
A mechanically programmable metamaterial based on mechanical‐acoustic interaction enables reconfigurable elastic wave control through bistable state switching. Spatial encoding of peak and valley states tunes band structures and transmission, achieving low‐frequency vibration suppression, waveguiding, and energy localization.
Yuanyuan Li   +7 more
wiley   +1 more source

Metamaterial-inspired piezoelectric system with dual functionalities: Energy harvesting and vibration suppression

open access: yes, 2017
Elastic metamaterials can be used for vibration control where environmental vibrations exist. While, vibration energy harvesters can be designed to harness the environmental vibrations and convert them into useful electricity.
Rajarshi Das (18027850)   +2 more
core  

Polarization angle independent metamaterial absorber based on circle-shaped resonators with interference theory

open access: yes, 2015
We theoretically and numerically designed a perfect metamaterial absorber at microwave frequencies. The proposed design has a very simple geometry, wide band properties and provides perfect absorption for all polarization angles which is one of the most ...
Karaaslan, Muharrrem   +4 more
core   +1 more source

Rod Origami (RodOri) Spring Metamaterials for Tunable Vibration Control via Tailored Structural Instabilities

open access: yesAdvanced Science, EarlyView.
Rod Origami (RodOri) springs harness snap‐through instabilities of pre‐stressed curved rods with geometrically programmable buckling behavior. Integrating RodOri springs with distinct geometries yields multistable metamaterials that undergo stepwise reconfiguration via sequential snapping, achieving wide‐range tunability of stiffness and resonance ...
Jeseung Lee   +2 more
wiley   +1 more source

Metamaterial Slabs for Electric Vehicle Wireless Charging Application

open access: yesIEEE Access
Design and development of a wireless charging system with metamaterial slabs for electric vehicles (EV) based on the Society of Automotive Engineers (SAE) standard is proposed in this paper.
Pharida Jeebklum, Chaiyut Sumpavakup
doaj   +1 more source

Improvement of multiband absorption with different technics (graphene, ito, and hole) for metamaterial absorber at optical frequencies

open access: yes, 2018
Three absorption improvement techniques are numerically applied to a multiband metamaterial absorber design for solar energy harvesting. These techniques are the following: the reshaping of the back metallic plate, the integrating of graphene sheets, and
Mulla, Batuhan, Sabah, Cumali
core   +1 more source

Chemically Programmable Underwater Sound‐Absorbing Metamaterial via MXene Self‐Assembly

open access: yesAdvanced Science, EarlyView.
MXene self‐assembly creates a chemically programmable underwater metamaterial with quasi‐periodic layers and a chemical‐physical multi‐level constraint system. A crosslinker as a ‘chemical scissor’ precisely edits microscopic interactions, exciting deep‐subwavelength strong local resonances that induce near‐zero/negative effective bulk modulus (Keff ...
Ziwen Gan   +5 more
wiley   +1 more source

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