Computing metasurfaces enabled chiral edge image sensing

Wang, Ruisi; He, Shanshan; Chen, Shizhen; Shu, Weixing; Wen, Shuangchun; Luo, Hailu

doi:10.1016/j.isci.2022.104532

Cited by 15 publications

(6 citation statements)

References 37 publications

(40 reference statements)

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“…Another interesting possibility that is opened up with using completely photonic systems is the chance to directly integrate optical data storage 165 , 166 . In the short term, integrated photonic systems using metasurfaces have already shown great promise for specific applications such as all-solid-state LiDAR, which could be influential in autonomous driving, 167 , 168 as well as in biophotonics for noninvasive diagnostics, 169 – 172 and advanced sensors with extremely small physical footprints. The use of EM waves for all-optical computation has additional benefits due to the vectorial nature of light, and the capacity of such diffractive surfaces has been investigated 173 .…”

Section: Discussionmentioning

confidence: 99%

Computation at the speed of light: metamaterials for all-optical calculations and neural networks

2022

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The explosion in the amount of information that is being processed is prompting the need for new computing systems beyond existing electronic computers. Photonic computing is emerging as an attractive alternative due to performing calculations at the speed of light, the change for massive parallelism, and also extremely low energy consumption. We review the physical implementation of basic optical calculations, such as differentiation and integration, using metamaterials, and introduce the realization of all-optical artificial neural networks. We start with concise introductions of the mathematical principles behind such optical computation methods and present the advantages, current problems that need to be overcome, and the potential future directions in the field. We expect that our review will be useful for both novice and experienced researchers in the field of all-optical computing platforms using metamaterials.

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Section: Discussionmentioning

confidence: 99%

Computation at the speed of light: metamaterials for all-optical calculations and neural networks

2022

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“…Chiroptical metasurfaces have several potential applications in various fields, such as polarization-sensitive displays, imaging, spectroscopy, sensing, highly selective optical filters, quantum information processing, microscopy, and high data rate optical communication. [77,[130][131][132][133][134][135][136][137][138][139][140][141][142] From the above-mentioned applications, chiroptical metasurfaces have been reported for various applications. In exploring the application possibilities of chiral metasurfaces, a few examples are presented below, such as chiral metaholographic displays, chiral sensing, and chiral imaging.…”

Section: Applicationsmentioning

confidence: 99%

Recent Progress on Plasmonic and Dielectric Chiral Metasurfaces: Fundamentals, Design Strategies, and Implementation

Khaliq

Nauman

Lee

2023

Advanced Optical Materials

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Over the years, researchers have been exploring ways to artificially design chiral structures and materials, namely metamaterials and metasurfaces. They exhibit unique optical properties that can be used for various applications. However, metasurfaces comprise symmetry‐breaking structures that provide a more convenient solution for planar chiral optics regardless of whether they are plasmonic or dielectric. In general, plasmonic chiral metasurfaces are more suitable for applications requiring a high confinement level and substantial optical near‐field enhancement. In contrast, dielectric chiral metasurfaces are ideal for wide operating wavelength ranges and low losses. This review summarizes the recent progress on plasmonic and dielectric chiral metasurfaces. It includes the fundamental concepts, design strategies, and their implementation for applications in holographic displays, imaging and sensing, and detection. Moreover, an overview of chiral metasurfaces to generate the nonlinear effects, hosting bound states in the continuum, and the significant role of machine‐learning‐based design approaches are also discussed. Finally, some future developments are highlighted where chiral metasurfaces are expected to play a vital role.

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“…The great potential of computing metasurfaces for performing optical analog operations has been exploited for chiral edge image sensing [53]. With the help of chirality-induced polarization rotation, a high-contrast recognition is realized by edge detection.…”

Section: Chiral Image Sensingmentioning

confidence: 99%

An introduction of perovskite materials in chiral metasurfaces

Ijaz,

Khan,

Massoud

2023

Optoelectronic Devices and Integration XII

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Nature has implanted chirality in many organic molecules of living organisms that have made man think about exploiting this handedness property of the objects and coming up with exciting applications through synthetic chiral structures. In this connection, several chiral metasurface designs have been proposed with interesting optoelectronic applications, such as chiral sensing of a molecule at the zeptomole level, circularly polarized luminescence, circular dichroism, chiro-spintronics, and nonlinear optics. The perovskites' unique chirality features have led to the emerging perovskite optoelectronic area. In this regard, exploiting the novel chiral perovskite materials for optoelectronic functionalities becomes vitally important. This area of research is at a pre-mature stage. The present issues associated with perovskite semiconductors are toxicity, reproducibility, and instability. However, the expertise from physics, chemistry, and device engineering from the perovskite research community has been focusing on the basic material properties, fabrication, and characterization methods while simultaneously mitigating the present issues to get to successful commercialization. Future research opportunities related to chiral perovskite nanocrystals are versatile and intend to rationalize the exceptional potential of these low-cost materials for complicated optoelectronics applications.

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Computing metasurfaces enabled chiral edge image sensing

Cited by 15 publications

References 37 publications

Computation at the speed of light: metamaterials for all-optical calculations and neural networks

Computation at the speed of light: metamaterials for all-optical calculations and neural networks

Recent Progress on Plasmonic and Dielectric Chiral Metasurfaces: Fundamentals, Design Strategies, and Implementation

An introduction of perovskite materials in chiral metasurfaces

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