Results 231 to 240 of about 560,130 (293)
Design and performance analysis of all-dielectric reflective, metalens for LWIR applications. [PDF]
Sci RepMukhtar S, Viegas J.
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Metagratings for underwater acoustic wavefront manipulation
INTER-NOISE and NOISE-CON Congress and Conference ProceedingsMetagratings are flat periodic assemblies of small scatterers, engineered to achieve effects such as steering, beamforming, or absorption. They have recently received attention in both electromagnetism and acoustic fields. In this work, we report the design, modeling, and experimental characterization of metagratings to steer underwater acoustic ...
Hasna KOURCHI +3 more
openaire +2 more sources
Multiple wavefront manipulation through matrix algebra
Applied Physics B, 2021A technique for manipulating wavefronts of propagated objects is proposed, applying matrix algebra to data containing the amplitude and phase information of objects previously propagated. Matrices act as operators, altering the initial conditions of the propagated objects, such as their spatial coordinates, reflection effects, and changes in depth.
J. M. Villa-Hernández +3 more
openaire +1 more source
Nanostructured metasurfaces for optical wavefront manipulation
Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XIV, 2021In this talk, we discuss our recent experimental efforts on nanostructured metasurfaces to manipulate the optical wavefront using advanced lithographic techniques. In the talk, we will discuss their functionalities for augmented reality, wavefront structuring and control, filtering, spectrometry, polarimetry, and others.
Michele Cotrufo +3 more
openaire +1 more source
Nonreciprocal Wavefront Manipulation with Transistor-loaded Metasurfaces
2021 15th European Conference on Antennas and Propagation (EuCAP), 2021We present four examples of metasurfaces nonreciprocal wavefront manipulations using transistor-loaded resonators: nonreciprocal phase-gradients, nonreciprocal waveplates, a nongyrotropic reflective isolator and a gyrotropic reflective isolator.
Guillaume Lavigne, Christophe Caloz
openaire +1 more source
Metagratings for Efficient Wavefront Manipulation
2018 12th International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), 2018Metagratings are two-dimensional periodic arrays of individual scatterers that enable highly-efficient extreme wave transformation which was impossible using conventional metasurfaces. We review our recent progress in this area and, notably, discuss metagrating designs based on asymmetric electric dipoles that are practically easier to realize compared
Y. Ra'di, A. Alu
openaire +1 more source
Bianisotropic acoustic metasurfaces for wavefront manipulation
The Journal of the Acoustical Society of America, 2018Materials with sub-wavelength asymmetry and long-range order have recently been shown to respond to acoustic waves in a manner that is analogous to electromagnetic biansiotropy [Sieck et al. Phys. Rev. B 96, 104303, (2017)]. A characteristic of these materials is the generation of dipolar scattering when subjected to a uniform time-varying pressure ...
Benjamin M. Goldsberry +2 more
openaire +1 more source
Multifunctional terahertz metasurfaces for polarization transformation and wavefront manipulation
Nanoscale, 2021Polarization conversion and multiplexing under different polarized incidences.
Zhen Yue +12 more
openaire +2 more sources
Compensating Plasmonic Losses by Wavefront Manipulation
Frontiers in Optics 2015, 2015We demonstrate experimentally the generation of unique surface-plasmon beams, which compensate the inherent losses of plasmons without using gain media, and show that these beams can extend the limited propagation length of surface-plasmons.
Itai Epstein, Yuval Tsur, Ady Arie
openaire +1 more source
Antireflection and Wavefront Manipulation with Cascaded Metasurfaces
Physical Review Applied, 2020Layered structures are widely used in optics to control wave reflection and propagation at interfaces but their thickness relative to the wavelength hinders their application in the radio-frequency regime. Here, we design and experimentally demonstrate cascaded metasurfaces with deeply subwavelength thickness that provide both antireflection and ...
Fengyuan Yang +6 more
openaire +1 more source