Results 31 to 40 of about 75,153 (270)
Transformation-Invariant Metamaterials [PDF]
Physical Review Letters, 2019 The fundamental semiconductor concept of doping has recently been transplanted to photonics in the platform of epsilon-near-zero (ENZ) media. By doping nonmagnetic impurities, ENZ media can exhibit almost arbitrary magnetism. However, this original photonic doping approach results only in isotropic media and thus cannot achieve impedance matching for ...
Youming Zhang +3 more
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Up Scalable Full Colour Plasmonic Pixels with Controllable Hue, Brightness and Saturation
Scientific Reports, 2017 It has long been the interests of scientists to develop ink free colour printing technique using nano structured materials inspired by brilliant colours found in many creatures like butterflies and peacocks.
Renilkumar Mudachathi, Takuo Tanaka
doaj +1 more source
Beyond local effective material properties for metamaterials [PDF]
, 2017 To discuss the properties of metamaterials on physical grounds and to consider them in applications, effective material parameters are usually introduced and assigned to a given metamaterial. In most cases, only weak spatial dispersion is considered.
Khrabustovskyi, Andrii +4 more
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Optica, 2020 We report the theoretical prediction and experimental realization of the optical phenomenon of “ballistic resonance.” This resonance, resulting from the interplay between free charge motion in confining geometries and periodic driving electromagnetic fields, can be utilized to achieve negative permittivity at frequencies well above the bulk plasma ...
Kun Li +6 more
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Optical Anapole Metamaterial [PDF]
ACS Nano, 2018 The toroidal dipole is a localized electromagnetic excitation independent from the familiar magnetic and electric dipoles. It corresponds to currents flowing along minor loops of a torus. Interference of radiating induced toroidal and electric dipoles leads to anapole, a nonradiating charge-current configuration.
Pin Chieh Wu +10 more
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Two-dimensional control of light with light on metasurfaces
Light: Science & Applications, 2016 The ability to control the wavefront of light is fundamental to focusing and redistribution of light, enabling many applications from imaging to spectroscopy.
Maria Papaioannou +4 more
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Reconfigurable Photonic Metamaterials [PDF]
Nano Letters, 2011 We introduce mechanically reconfigurable photonic metamaterials (RPMs) as a flexible platform for realizing metamaterial devices with reversible and large-range tunable characteristics in the optical part of the spectrum. Here we illustrate this concept for a temperature-driven RPM exhibiting reversible relative transmission changes of up to 50%.
Ou, Jun-Yu +3 more
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Holographic free-electron light source
Nature Communications, 2016 Controlling the generation of light in nano-scale systems is a challenging task and is of growing importance. Here, Li et al. propose a means of controlling the wavefront of light emanating from a single nano scale emitter by holographic principles using
Guanhai Li +4 more
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Multiband terahertz metamaterial perfect absorber for microorganisms detection
Scientific Reports, 2023 We report a multi-resonant terahertz (THz) metamaterial perfect absorber (MPA)-based biosensor in the working frequency range of $$0 - 3.8 THz$$ 0 - 3.8 T H z for sensing of microorganisms (such as fungi, yeast) and wheat pesticides. Nearly $$100\%$$ 100
Ruchi Bhati, Anil K Malik
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Metarpillar: Soft robotic locomotion based on buckling-driven elastomeric metamaterials
Materials & Design, 2021 Mechanical instabilities are emerging as novel actuation mechanisms for the design of biomimetic soft robots and smart structures. The present study shows that by coupling buckling-driven elastomeric auxetic modules actuated by a negative air-pressure, a
B. Grossi +4 more
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