Results 51 to 60 of about 4,017 (247)
Micromachines, 2021 Looking back on the development of metamaterials in the past 20 years, metamaterials have gradually developed from three-dimensional complex electromagnetic structures to a two-dimensional metasurface with a low profile, during which a series of ...
Sisi Luo +7 more
doaj +1 more source
Orbital Angular Momentum-based Space Division Multiplexing for High-capacity Underwater Optical Communications [PDF]
, 2016 To increase system capacity of underwater optical communications, we employ the spatial domain to simultaneously transmit multiple orthogonal spatial beams, each carrying an independent data channel.
Ahmed, Nisar +16 more
core +4 more sources
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. +2 more
core +2 more sources
Universal linear optical operations on discrete phase-coherent spatial modes [PDF]
, 2018 Linear optical operations are fundamental and significant for both quantum mechanics and classical technologies. We demonstrate a non-cascaded approach to perform arbitrary unitary and non-unitary linear operations for N-dimensional phase-coherent ...
Barnett, Stephen M. +7 more
core +2 more sources
Haptics and directional audio using acoustic metasurfaces [PDF]
, 2017 The ability to control acoustic fields offers many possible applications in loudspeaker design, ultrasound imaging, medical therapy, and acoustic levitation. Sound waves are currently shaped using phased array systems, even though the complex electronics
Caleap, Mihai +5 more
core +2 more sources
Joint Compressed Sensing and Manipulation of Wireless Emissions with Intelligent Surfaces
, 2019 Programmable, intelligent surfaces can manipulate electromagnetic waves impinging upon them, producing arbitrarily shaped reflection, refraction and diffraction, to the benefit of wireless users. Moreover, in their recent form of HyperSurfaces, they have
Akyildiz, Ian +10 more
core +1 more source
Error Analysis of Programmable Metasurfaces for Beam Steering [PDF]
IEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2020 Recent years have seen the emergence of programmable metasurfaces, where the user can modify the EM response of the device via software. Adding reconfigurability to the already powerful EM capabilities of metasurfaces opens the door to novel cyber-physical systems with exciting applications in domains such as holography, cloaking, or wireless ...
Hamidreza Taghvaee +3 more
openaire +4 more sources
Intelligent metasurfaces: digitalized, programmable, and intelligent platforms
Light: Science & Applications, 2022 AbstractDistinguished from conventional ones, intelligent metasurfaces are endowed with three important characteristics: digitalization, programmability, and intelligence, which can be further integrated with detection, artificial neural networks, and feedback systems into a smart platform.
openaire +3 more sources
Scalability Analysis of Programmable Metasurfaces for Beam Steering [PDF]
IEEE Access, 2020 Programmable metasurfaces have garnered significant attention as they confer unprecedented control over the electromagnetic response of any surface. Such feature has given rise to novel design paradigms such as Software-Defined Metamaterials (SDM) and Reconfigurable Intelligent Surfaces (RIS) with multiple groundbreaking applications.
Taghvaee, Hamidreza +9 more
openaire +5 more sources
Terahertz metasurface enabled by barium strontium titanate ferroelectric film
EPJ Applied MetamaterialsIn this paper, a Ba0.5Sr0.5TiO3 (BST) ferroelectric film is prepared and characterized in the terahertz band. Subsequently, based on the prepared BST film, a metasurface is proposed to manipulate electromagnetic waves.
Fu Yuan, Fu Xiaojian, Guo Yunsheng
doaj +1 more source