Metasurfaces-based imaging and applications: from miniaturized optical components to functional imaging platforms

Lee, Dasol; Gwak, Junho; Badloe, Trevon; Palomba, Stefano; Rho, Junsuk

doi:10.1039/c9na00751b

Cited by 72 publications

(43 citation statements)

References 186 publications

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“…The whole characterization confirms extremely exciting properties of the proposed metalens that, due to their miniaturization, can be exploited as optical components for micro–nano imaging, smart devices, in situ investigation as a local spectroscopic probe, color sensitivity, and many more. [ 18,44,47–50 ]…”

Section: Resultsmentioning

confidence: 99%

Leveraging on ENZ Metamaterials to Achieve 2D and 3D Hyper‐Resolution in Two‐Photon Direct Laser Writing

et al. 2021

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A novel technique is developed to improve the resolution of two‐photon direct laser writing lithography. Thanks to the high collimation enabled by extraordinary εNZ (near‐zero) metamaterial features, ultrathin dielectric hyper‐resolute nanostructures are within reach. With respect to the standard direct laser writing approach, a size reduction of 89% and 50%, in height and width respectively, is achieved with the height of the structures adjustable between 5 and 50 nm. The retrieved 2D fabrication parameters are exploited for realizing extremely thin all‐dielectric metalenses tailored through deep machine learning codes. The hyper‐resolution achieved in the writing process enables the fabrication of a highly detailed dielectric 3D bas‐relief (with full height of 500 nm) of Da Vinci's “Lady with an Ermine”. The proof‐of‐concept results show intriguing cues for the current and trendsetting research scenario in anti‐counterfeiting applications and ultracompact photonics, paving the way for the realization of all‐dielectric and apochromatic ultrathin imaging systems.

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Section: Resultsmentioning

confidence: 99%

Leveraging on ENZ Metamaterials to Achieve 2D and 3D Hyper‐Resolution in Two‐Photon Direct Laser Writing

et al. 2021

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“…However, there are many imaging applications that require high-throughput, real-time, and low power image processing for which digital electronics is not ideally suited. To enable such applications, it is possible to off-load certain critical and computationally intensive tasks to passive, nonenergy consuming, and ultrafast flat and deep optics [93][94][95][96][97][98][99][100][101]. Next-generation computational imaging systems may therefore include a series of deep and flat optical layers that need to be easily stackable and have a series of very demanding linear, nonlocal and nonlinear optical properties.…”

Section: Open Challenges and Opportunities For Metasurfacesmentioning

confidence: 99%

The road to atomically thin metasurface optics

Brongersma

2020

Nanophotonics

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The development of flat optics has taken the world by storm. The initial mission was to try and replace conventional optical elements by thinner, lightweight equivalents. However, while developing this technology and learning about its strengths and limitations, researchers have identified a myriad of exciting new opportunities. It is therefore a great moment to explore where flat optics can really make a difference and what materials and building blocks are needed to make further progress. Building on its strengths, flat optics is bound to impact computational imaging, active wavefront manipulation, ultrafast spatiotemporal control of light, quantum communications, thermal emission management, novel display technologies, and sensing. In parallel with the development of flat optics, we have witnessed an incredible progress in the large-area synthesis and physical understanding of atomically thin, two-dimensional (2D) quantum materials. Given that these materials bring a wealth of unique physical properties and feature the same dimensionality as planar optical elements, they appear to have exactly what it takes to develop the next generation of high-performance flat optics.

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“…Given the recent advances and progress of metasurfaces in biomedical engineering, reviews published on the merging of these research areas are gaining attention [52][53][54]. However, their scopes are limited to either bioimaging or biosensing application.…”

Section: Introductionmentioning

confidence: 99%

Metasurfaces for biomedical applications: imaging and sensing from a nanophotonics perspective

et al. 2020

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Metasurface is a recently developed nanophotonics concept to manipulate the properties of light by replacing conventional bulky optical components with ultrathin (more than 104 times thinner) flat optical components. Since the first demonstration of metasurfaces in 2011, they have attracted tremendous interest in the consumer optics and electronics industries. Recently, metasurface-empowered novel bioimaging and biosensing tools have emerged and been reported. Given the recent advances in metasurfaces in biomedical engineering, this review article covers the state of the art for this technology and provides a comprehensive interdisciplinary perspective on this field. The topics that we have covered include metasurfaces for chiral imaging, endoscopic optical coherence tomography, fluorescent imaging, super-resolution imaging, magnetic resonance imaging, quantitative phase imaging, sensing of antibodies, proteins, DNAs, cells, and cancer biomarkers. Future directions are discussed in twofold: application-specific biomedical metasurfaces and bioinspired metasurface devices. Perspectives on challenges and opportunities of metasurfaces, biophotonics, and translational biomedical devices are also provided. The objective of this review article is to inform and stimulate interdisciplinary research: firstly, by introducing the metasurface concept to the biomedical community; and secondly by assisting the metasurface community to understand the needs and realize the opportunities in the medical fields. In addition, this article provides two knowledge boxes describing the design process of a metasurface lens and the performance matrix of a biosensor, which serve as a “crash-course” introduction to those new to both fields.

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Metasurfaces-based imaging and applications: from miniaturized optical components to functional imaging platforms

Abstract: This review focuses on the imaging applications of metasurfaces.

Cited by 72 publications

References 186 publications

Leveraging on ENZ Metamaterials to Achieve 2D and 3D Hyper‐Resolution in Two‐Photon Direct Laser Writing

Leveraging on ENZ Metamaterials to Achieve 2D and 3D Hyper‐Resolution in Two‐Photon Direct Laser Writing

The road to atomically thin metasurface optics

Metasurfaces for biomedical applications: imaging and sensing from a nanophotonics perspective

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