Modelling of free-form conformal metasurfaces

Wu, Kedi; Coquet, Philippe; Wang, Qi Jie; Genevet, Patrice

doi:10.1038/s41467-018-05579-6

Cited by 87 publications

(58 citation statements)

References 37 publications

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“…We are also expecting the development of new achromatic and aberration free devices by combining freeform optical components with conformal metadevices …”

Section: The Deflection Angle Results Which Confirm That the Metasurmentioning

confidence: 99%

Mitigating Chromatic Dispersion with Hybrid Optical Metasurfaces

et al. 2018

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“…We are also expecting the development of new achromatic and aberration free devices by combining freeform optical components with conformal metadevices …”

Section: The Deflection Angle Results Which Confirm That the Metasurmentioning

confidence: 99%

Mitigating Chromatic Dispersion with Hybrid Optical Metasurfaces

et al. 2018

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“…Because of these peculiar characteristics, no commercial software is capable of efficiently simulating meta-surfaces that are modeled as a sheet of zero thickness [157]- [158]. Efficient numerical algorithms that generalize finite difference time or frequency domain methods and account for individual meta-surfaces have been recently proposed in [157], [39]. However, they are not scalable for application in largescale wireless networks.…”

Section: System-level Simulation Of Large-scale Wireless Network mentioning

confidence: 99%

Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come

Renzo

Debbah

Phan-Huy

et al. 2019

J Wireless Com Network

1,501

631

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Future wireless networks are expected to constitute a distributed intelligent wireless communications, sensing, and computing platform, which will have the challenging requirement of interconnecting the physical and digital worlds in a seamless and sustainable manner. Currently, two main factors prevent wireless network operators from building such networks: 1) the lack of control of the wireless environment, whose impact on the radio waves cannot be customized, and 2) the current operation of wireless radios, which consume a lot of power because new signals are generated whenever data has to be transmitted. In this paper, we challenge the usual "more data needs more power and emission of radio waves" status quo, and motivate that future wireless networks necessitate a smart radio environment: A transformative wireless concept, where the environmental objects are coated with artificial thin films of electromagnetic and reconfigurable material (that are referred to as intelligent reconfigurable meta-surfaces), which are capable of sensing the environment and of applying customized transformations to the radio waves. Smart radio environments have the potential to provide future wireless networks with uninterrupted wireless connectivity, and with the capability of transmitting data without generating new signals but recycling existing radio waves. We will discuss, in particular, two major types of intelligent reconfigurable meta-surfaces applied to wireless networks. The first type of meta-surfaces will be embedded into, e.g., walls, and will be directly controlled by the wireless network operators via a software controller in order to shape the radio waves for, e.g., improving the network coverage. The second type of meta-surfaces will be embedded into objects, e.g., smart t-shirts with sensors for health monitoring, and will backscatter the radio waves generated by cellular base stations in order to report their sensed data to mobile phones. These functionalities will enable wireless network operators to offer new services without the emission of additional radio waves, but by recycling those already existing for other purposes. This paper overviews the current research efforts on smart radio environments, the enabling technologies to realize them in practice, the need of new communication-theoretic models for their analysis and design, and the long-term and open research issues to be solved towards their massive deployment. In a nutshell, this paper is focused on discussing how the availability of intelligent reconfigurable meta-surfaces will allow wireless network operators to redesign common and well-known network communication paradigms.

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“…Rendering flexibility to metamaterials can make it possible to adhere flexible devices to all surfaces or wrap transparent and light metamaterials around objects, which many terahertz and microwave applications [36][37][38][39][40][41][42][43][44][45] can significantly benefit from.…”

Section: Introductionmentioning

confidence: 99%

Flexible broadband polarization converter based on metasurface at microwave band*

et al. 2019

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This paper proposes a flexible broadband linear polarization converter based on metasurface operating at microwave band. In order to achieve bandwidth extension property, long and short metallic arc wires, as well as the metallic disks placed over a ground plane, are combined into the polarizer, which can generate three neighboring resonances. Due to the combination of the first two resonances and optimized size and thickness of the unit cell, the polarization converter can have a weak incident angle dependence. Both simulated and measured results confirm that the average polarization conversion ratio is over 85% from 11.3 to 20.2 GHz within a broad incident angle from 0° to 45°. Moreover, the proposed polarization converter based on flexible substrates can be applied for conformal design. The simulation and experiment results demonstrate that our designed polarizer still keeps high polarization conversion efficiency even when it adheres on convex cylindrical surfaces. The periodic metallic structure of the designed polarizer has great potential application values in the microwave, terahertz and optic regimes.

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Modelling of free-form conformal metasurfaces

Cited by 87 publications

References 37 publications

Mitigating Chromatic Dispersion with Hybrid Optical Metasurfaces

Mitigating Chromatic Dispersion with Hybrid Optical Metasurfaces

Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come

Flexible broadband polarization converter based on metasurface at microwave band*

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