منابع مشابه
Reconfigurable Gradient Metasurfaces With Random Access
Since metamaterials have enabled the design of almost arbitrary landscapes of static optical properties and functionalities, dynamic temporal and spatial control over metamaterial properties has become the next big challenge [1]. Here we demonstrate the first randomly addressable reconfigurable metamaterials, thus enabling fast and high-contrast control over optical properties simultaneously in...
متن کاملGeometrical tradeoffs in graphene-based deeply-scaled electrically reconfigurable metasurfaces
In this work we study the terahertz light propagation through deeply-scaled graphene-based reconfigurable metasurfaces, i.e. metasurfaces with unit-cell dimensions much smaller than the terahertz wavelength. These metasurfaces are analyzed as phase modulators for constructing reconfigurable phase gradients along an optical interface for the purpose of beam shaping. Two types of deeply-scaled me...
متن کاملOptically reconfigurable metasurfaces and photonic devices based on phase change materials
1 Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Highfield, Southampton, SO17 1BJ, UK 2 Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore 3 Instiute for Life Sciences, University of Southampton, Highfield, Southampton, SO17 1BJ, UK 4 Ce...
متن کاملExperimental Demonstration of >230° Phase Modulation in Gate-Tunable Graphene-Gold Reconfigurable Mid-Infrared Metasurfaces.
Metasurfaces offer significant potential to control far-field light propagation through the engineering of the amplitude, polarization, and phase at an interface. We report here the phase modulation of an electronically reconfigurable metasurface and demonstrate its utility for mid-infrared beam steering. Using a gate-tunable graphene-gold resonator geometry, we demonstrate highly tunable refle...
متن کاملMetasurfaces Based on Phase-Change Material as a Reconfigurable Platform for Multifunctional Devices
Integration of phase-change materials (PCMs) into electrical/optical circuits has initiated extensive innovation for applications of metamaterials (MMs) including rewritable optical data storage, metasurfaces, and optoelectronic devices. PCMs have been studied deeply due to their reversible phase transition, high endurance, switching speed, and data retention. Germanium-antimony-tellurium (GST)...
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ژورنال
عنوان ژورنال: Science
سال: 2018
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.360.6386.281-f