Results 31 to 40 of about 11,020 (243)

Hybrid Checkerboard Metasurface Combining Passive and Active AMCs [PDF]

Journal of Electromagnetic Engineering and Science
In this paper, a hybrid checkerboard metasurface is proposed for controlling radar cross-sections (RCSs) using a small number of active devices. The proposed metasurface consists of passive and active artificial magnetic conductors.
Sung Hoe Kim, Donghyun Kim, Chang-Hyun Lee, Young Joong Yoon   +3 more
doaj   +1 more source

Wavefront Control of Millimeter Waves With a VO₂-Based Reconfigurable Meta-Reflectarray

IEEE Access, 2023
In this paper, a novel architecture of a reconfigurable metasurface is proposed and numerically assessed for wavefront control in wireless systems working in the millimeter-wave range.
Mohammad Ali Shameli, Antonio-D Capobianco, Luca Schenato, Marco Santagiustina, Domenico De Ceglia   +4 more
doaj   +1 more source

MEMS-reconfigurable metamaterials and antenna applications [PDF]

, 2014
This paper reviews some of our contributions to reconfigurable metamaterials, where dynamic control is enabled by micro-electro-mechanical systems (MEMS) technology.
Debogovic, Tomislav, Perruisseau-Carrier, Julien   +1 more
core   +3 more sources

Dynamic metasurface lens based on MEMS Technology

, 2017
In the recent years, metasurfaces, being flat and lightweight, have been designed to replace bulky optical components with various functions. We demonstrate a monolithic Micro-Electro-Mechanical System (MEMS) integrated with a metasurface-based flat lens
Capasso, Federico, Jung, Il Woong, Lopez, Daniel, Roy, Tapashree, Troccoli, Mariano, Zhang, Shuyan   +5 more
core   +2 more sources

A metasurface composed of orifice-type unit cells for the redirection of acoustic waves

Scientific Reports, 2022
To implement a sound wave redirection system, a two-dimensional (2D) slice of a three-dimensional (3D) metasurface is designed and fabricated using a one-dimensional (1D) face-centred orifice cubic (FCOC) unit cell.
Choon Mahn Park, Geo-Su Yim, Sang Hun Lee   +2 more
doaj   +1 more source

Tunable Metasurfaces Based on Mechanically Deformable Polymeric Substrates

Photonics, 2023
The emergence of metamaterials has presented an unprecedented platform to control the fundamental properties of light at the nanoscale. Conventional metamaterials, however, possess passive properties that cannot be modulated post-fabrication, limiting ...
Elijah Effah, Ezekiel Edward Nettey-Oppong, Ahmed Ali, Kyung Min Byun, Seung Ho Choi   +4 more
doaj   +1 more source

Gradient metasurfaces: a review of fundamentals and applications [PDF]

, 2017
In the wake of intense research on metamaterials the two-dimensional analogue, known as metasurfaces, has attracted progressively increasing attention in recent years due to the ease of fabrication and smaller insertion losses, while enabling an ...
Bozhevolnyi, Sergey I., Ding, Fei, Pors, Anders   +2 more
core   +2 more sources

UV-Nanoimprint and Deep Reactive Ion Etching of High Efficiency Silicon Metalenses: High Throughput at Low Cost with Excellent Resolution and Repeatability

Nanomaterials, 2023
As metasurfaces begin to find industrial applications there is a need to develop scalable and cost-effective fabrication techniques which offer sub-100 nm resolution while providing high throughput and large area patterning.
Christopher A. Dirdal, Karolina Milenko, Anand Summanwar, Firehun T. Dullo, Paul C. V. Thrane, Oana Rasoga, Andrei M. Avram, Adrian Dinescu, Angela M. Baracu   +8 more
doaj   +1 more source

Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation

, 2015
The replacement of bulk refractive optical elements with diffractive planar components enables the miniaturization of optical systems. However, diffractive optics suffers from large chromatic aberrations due to the dispersion of the phase accumulated by ...
Aieta, Francesco, Capasso, Federico, Genevet, Patrice, Kats, Mikhail A.   +3 more
core   +1 more source

Thermally-curable nanocomposite printing for the scalable manufacturing of dielectric metasurfaces

Microsystems & Nanoengineering, 2022
Metasurfaces consisting of artificially designed meta-atoms have been popularized recently due to their advantages of amplitude and phase of light control.
Wonjoong Kim, Gwanho Yoon, Joohoon Kim, Heonyeong Jeong, Yeseul Kim, Hojung Choi, Trevon Badloe, Junsuk Rho, Heon Lee   +8 more
doaj   +1 more source