Results 41 to 50 of about 188,571 (367)
Probabilistic Representation and Inverse Design of Metamaterials Based on a Deep Generative Model with Semi‐Supervised Learning Strategy [PDF]
Advances in Materials, 2019 The research of metamaterials has achieved enormous success in the manipulation of light in a prescribed manner using delicately designed subwavelength structures, so‐called meta‐atoms.
Wei Ma +4 more
semanticscholar +1 more source
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
openaire +2 more sources
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
openaire +5 more sources
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
doaj +1 more source
Compliant Metamaterials for Resonantly Enhanced Infrared Absorption Spectroscopy and Refractive Index Sensing [PDF]
, 2011 Metamaterials can be designed to operate at frequencies from the visible to the mid-IR, making these structures useful for both refractive index sensing and surface-enhanced infrared absorption spectroscopy.
Atwater, Harry A. +3 more
core +1 more source
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
openaire +4 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Perfect Metamaterial Absorber [PDF]
Physical Review Letters, 2008 We present the design for an absorbing metamaterial element with near unity absorbance. Our structure consists of two metamaterial resonators that couple separately to electric and magnetic fields so as to absorb all incident radiation within a single unit cell layer. We fabricate, characterize, and analyze a metamaterial absorber with a slightly lower
Landy, N. I. +4 more
openaire +3 more sources