Results 51 to 60 of about 1,349 (239)

Stimuli‐responsive active materials for dynamic control of light field

open access: yesResponsive Materials, 2023
The increasing demand for the multidimensional and dynamic control of light has spurred the development of stimuli‐responsive, reconfigurable, and programmable optical systems.
Ren Zheng   +7 more
doaj   +1 more source

Real-time reconfigurable metasurfaces enabling agile terahertz wave front manipulation

open access: yesLight: Science & Applications, 2023
Real-time controlled programmable metasurfaces, having an array-of-subarrays architecture under the control of one-bit digital coding sequence, are demonstrated for rapid and precise multifunctional Terahertz wave front engineering.
Huixian Zhou, Cheng Zhang
doaj   +1 more source

Dynamic millimeter-wave OAM beam generation through programmable metasurface

open access: yesNanophotonics, 2022
Millimeter-wave (mmWave) and orbital angular momentum (OAM) multiplexing are two key technologies for modern wireless communications, where significant efforts have been devoted to combining these two technologies for extremely high channel capacities ...
Bai Xudong   +6 more
doaj   +1 more source

Recent Progress in Reconfigurable and Intelligent Metasurfaces: A Comprehensive Review of Tuning Mechanisms, Hardware Designs, and Applications

open access: yesAdvanced Science, 2022
Intelligent metasurfaces have gained significant importance in recent years due to their ability to dynamically manipulate electromagnetic (EM) waves. Their multifunctional characteristics, realized by incorporating active elements into the metasurface ...
Yasir Saifullah   +4 more
doaj   +1 more source

Metasurfaces: physics and applications in wireless communications [PDF]

open access: yes, 2023
The ever increasing number of wireless devices and systems has led to a crowded spectrum and increased the demand for versatile and multi-functional wireless apparatuses.
Ataloglou, Vasileios G   +5 more
core   +1 more source

Programmable Metasurface-Based Multicast Systems: Design and Analysis [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2020
This paper considers a multi-antenna multicast system with programmable metasurface (PMS) based transmitter. Taking into account of the finite-resolution phase shifts of PMSs, a novel beam training approach is proposed, which achieves comparable performance as the exhaustive beam searching method but with much lower time overhead.
Xiaoling Hu 0001   +4 more
openaire   +2 more sources

Manufacturing of high frequency substrates as software programmable metasurfaces on PCBs with integrated controller nodes [PDF]

open access: yes, 2022
S.561-567The proposed work is performed in the framework of the FET-EU project "VISORSURF", which has undertaken research activities on the emerging concepts of metamaterials that can be software programmable and adapt their properties.
Tsilipakos, O.   +16 more
core   +3 more sources

Multimode OAM beam generation through 1-bit programmable metasurface antenna

open access: yesScientific Reports, 2023
modern wireless communication, the orbital angular momentum (OAM) beam is considered as an important technology. Some considerable efforts have been devoted to using this technology for channel capacity enhancement as much as possible.
Morteza Nadi   +2 more
doaj   +1 more source

Toward Intelligent Metasurfaces: The Progress from Globally Tunable Metasurfaces to Software-Defined Metasurfaces with an Embedded Network of Controllers [PDF]

open access: yes, 2020
| openaire: EC/H2020/736876/EU//VISORSURF Lisää oa, kun julkaistu.Metasurfaces, the ultrathin, 2D version of metamaterials, have recently attracted a surge of attention for their capability to manipulate electromagnetic waves.
Abadal, Sergi   +50 more
core   +1 more source

Tunable and reconfigurable metasurfaces and metadevices

open access: yesOpto-Electronic Advances, 2018
Metasurfaces, two-dimensional equivalents of metamaterials, are engineered surfaces consisting of deep subwavelength features that have full control of the electromagnetic waves.
Nemati Arash   +3 more
doaj   +1 more source

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