Deep Learning Empowered Parallelized Metasurface Computed Tomography Snapshot Spectral Imaging DOI
Kaiyang Ding, Qian Zhou, Mengyuan Chen

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Abstract Snapshot spectral imaging is an emerging technology for fast data acquisition in dynamic environments, capturing high‐volume spatial‐spectral information a single snapshot. However, it suffers from bulky cascading optics and cannot be directly used space‐restricted scenarios such as endoscope‐assisted brain microsurgery real‐time cellular tissue imaging. In this work, ultracompact strategy of parallelized metasurface computed tomography empowered by generative deep learning proposed, which can effectively reduce the volume snapshot cm 3 scale to sub‐mm while retaining high resolution speed so that above‐mentioned pain point problem well addressed. The system comprises seven multifunctional sub‐metasurfaces simultaneously acquiring multi‐angle projection integration target, uses system‐calibrated spread functions wavelength spatial position distributions, incorporates adversarial neural network reconstruction multiplexed images. Experimental results show achieved 38 ms with 10 nm range 450–650 nm. This technique paves way into various highly miniaturized microscopy endoscopic systems applications advanced medical diagnosis.

Language: Английский

Advanced biological imaging techniques based on metasurfaces DOI Creative Commons
Yongjae Jo, Hyemi Park,

Hyeyoung Yoon

et al.

Opto-Electronic Advances, Journal Year: 2024, Volume and Issue: 0(0), P. 240122 - 240122

Published: Jan. 1, 2024

Language: Английский

Citations

15
Developments of terahertz metasurface biosensors: A literature review DOI Creative Commons

Zhongquan Zhang,

Rui Zhao,

Mengyang Cong

et al.

Nanotechnology Reviews, Journal Year: 2024, Volume and Issue: 13(1)

Published: Jan. 1, 2024

Abstract Terahertz metasurface (THz-MS) biosensor is a hybrid technology that combines terahertz time-domain spectroscopy and for the detection of biomolecules cells. Compared with traditional strategies, it label-free, non-invasive, time-saving, easy to operate. However, three fundamental issues, namely, low sensitivity, specificity, drastic water absorption, hinder development THz-MS biosensors clinical application. Recently, numerous studies have been performed solve these problems, results show great potential sensitive nucleotides, proteins, Therefore, important summarize in biomedical detection. In this review, we summarized mechanism, manufacturing, implementation biosensors. Then, strategies improve selectivity, means reduce absorption are presented. Sensitivity can be improved by suppressing electromagnetic radiation strengthening interaction between target molecules meta-atoms. Antibodies aptamers most effective improving specificity. Microfluidics hydrogels two ways absorption. Subsequently, applications nucleotide, cells summarized. Finally, prospects future outlined.

Language: Английский

Citations

12
Unleashing the potential: AI empowered advanced metasurface research DOI Creative Commons
Yunlai Fu,

Xuxi Zhou,

Yiwan Yu

et al.

Nanophotonics, Journal Year: 2024, Volume and Issue: 13(8), P. 1239 - 1278

Published: Feb. 27, 2024

In recent years, metasurface, as a representative of micro- and nano-optics, have demonstrated powerful ability to manipulate light, which can modulate variety physical parameters, such wavelength, phase, amplitude, achieve various functions substantially improve the performance conventional optical components systems. Artificial Intelligence (AI) is an emerging strong effective computational tool that has been rapidly integrated into study sciences over decades played important role in metasurface. This review starts with brief introduction basics then describes cases where AI metasurface research converged: from AI-assisted design elements up advanced systems based on We demonstrate power AI, well its extract analyze wide range information, limitations available resources. Finally conclude by presenting challenges posed convergence disciplines.

Language: Английский

Citations

11
Enhanced Infrared Vision by Nonlinear Up‐Conversion in Nonlocal Metasurfaces DOI Creative Commons

Laura Valencia Molina,

Rocio Camacho‐Morales, Jihua Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: May 23, 2024

The ability to detect and image short-wave infrared light has important applications in surveillance, autonomous navigation, biological imaging. However, the current imaging technologies often pose challenges due large footprint, thermal noise inability augment visible Here, is demonstrated by nonlinear up-conversion an ultra-compact, high-quality-factor lithium niobate resonant metasurface. Images with high conversion efficiency resolution quality are obtained despite strong nonlocality of possibility edge-detection processing augmented direct for advanced night vision further shown.

Language: Английский

Citations

11
Deep-Ultraviolet AlN Metalens with Imaging and Ultrafast Laser Microfabrication Applications DOI Creative Commons

Yu Chieh Peng,

Yu Jie Wang,

Kuan-Heng Chen

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Deep-ultraviolet (DUV) light is essential for applications including fabrication, molecular research, and biomedical imaging. Compact metalenses have the potential to drive further innovation in these fields, provided they utilize a material platform that cost-effective, durable, scalable. In this work, we present aluminum nitride (AlN) as an efficient solution DUV applications. These metalenses, with thickness of only 380 nm, deliver focusing imaging capabilities close theoretical diffraction limit. Leveraging their robustness intense ultrafast laser irradiation, demonstrate successful direct writing microstructures on polymer film silicon substrate. results underscore significant promise advancing photonic technologies critical wavelength regime.

Language: Английский

Citations

1
Nonlocal Huygens’ meta-lens for high-quality-factor spin-multiplexing imaging DOI Creative Commons
Jin Yao, Yubin Fan, Yunhui Gao

et al.

Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 30, 2025

Abstract Combining bright-field and edge-enhanced imaging affords an effective avenue for extracting complex morphological information from objects, which is particularly beneficial biological imaging. Multiplexing meta-lenses present promising candidates achieving this functionality. However, current multiplexing lack spectral modulation, crosstalk between different wavelengths hampers the quality, especially samples requiring precise wavelength specificity. Here, we experimentally demonstrate nonlocal Huygens’ meta-lens high-quality-factor spin-multiplexing Quasi-bound states in continuum (q-BICs) are excited to provide a high quality factor of 90 incident-angle dependence. The generalized Kerker condition, driven by Fano-like interactions q-BIC in-plane Mie resonances, breaks radiation symmetry, resulting transmission peak with geometric phase polarization-converted light, while unconverted light exhibits dip without phase. Enhanced polarization conversion efficiency 65% achieved, accompanied minimal value, surpassing theoretical limit traditional thin metasurfaces. Leveraging these effects, output state efficient wavelength-selective focusing profile. counterpart serves as spatial frequency filter based on incident-angular dispersion, passing high-frequency edge details. Bright-field detection thus presented under two spin states. This work provides versatile framework metasurfaces, boosting biomedical sensing applications.

Language: Английский

Citations

1
Integrated-Resonant Units for Phase Compensation and Efficiency Enhancements in Achromatic Meta-lenses DOI
Jin Yao, Rong Lin, Xiaoyu Che

et al.

ACS Photonics, Journal Year: 2023, Volume and Issue: 10(12), P. 4273 - 4281

Published: Oct. 16, 2023

Achromatic meta-lenses have shown great promise in ultracompact and full-color optical devices. Their performances, including size, bandwidth, numerical aperture, are originally restricted by the phase compensation provided functional meta-atoms. Integrated-resonant units (IRUs), associating various meta-atoms, resonant modes, functionalities into one supercell, efficient candidates for large broadband achromatic meta-lenses. In this work, we propose nonlocal plasmonic IRUs with multiple nanorods to boost an meta-lens over visible band ranging from 400 660 nm. By exciting local resonances manipulating their interactions, resonance can be flexibly controlled, achieving effective group delay range (Δφmax – Δφmin)/Δω of 42.5 fs. Spherical spiral both demonstrated. To demonstrate functionality IRUs, efficiency-enhanced composed six types dielectric is designed tailoring field distribution difference between two in-plane orthogonal directions. This work offers a novel design scheme large-scale high-efficiency facilitates practical applications advanced imaging display.

Language: Английский

Citations

17
Electromagnetic Wave Tailoring: From One Dimension to Multiple Dimensions DOI Creative Commons

Jing Cheng Zhang,

Geng‐Bo Wu, Mu Ku Chen

et al.

Electromagnetic Science, Journal Year: 2023, Volume and Issue: 1(3), P. 1 - 21

Published: Sept. 1, 2023

Metasurfaces, known as arrays of subwavelength antennas, provide a wide range options for controlling electromagnetic waves and effectively reducing the size complexity devices. Metasurfaces can manipulate five degrees freedom waves: amplitude, wavelength, polarization, phase, orbital angular momentum; these are customized to variety remarkable functionalities, including metalenses meta-holograms. With advancement simultaneously manipulating two or more field, there has been significant increase in amount information that carry. The wavefront be precisely tailored specific applications, facilitating new possibilities innovative applications with high performance diverse such full-color vectorial meta-holograms achieved by single-layer metasurface. This review briefly overviews latest developments metasurfaces, categorizing them based on their various used waves. use metasurfaces control from one dimension multiple dimensions is systematically explored. challenges opportunities future research discussed.

Language: Английский

Citations

17
Bound States in the Continuum for Hot Electron Generation in Integrated-Resonant Metasurfaces DOI
Rong Lin, Jin Yao,

Zhi Hui Wang

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(18), P. 7661 - 7668

Published: March 14, 2024

Hydrogen, as a type of sustainable energy, has the potential to facilitate achievement carbon neutrality by replacing fossil fuels. Conventional plasmonic metal nanostructures efficient photocatalysts have been employed generate hot electrons, thus further facilitating hydrogen production. However, such structures only contain single resonance mode, which restricts field enhancement and limits electron generation rate. In this work, we introduce novel integrated-resonant unit (IRU) that combines local nonlocal modes can excite strong interaction between quasi-bound state in continuum (quasi-BIC) regime for enhancing electric field. As result, achieved maximum factor 168.5 at excitation wavelength 734 nm under period P = 750 nm. Correspondingly, rate electrons exceed 6 × 1019 s–1, is 2 orders magnitude greater than structure without IRU property. This research provides strategic framework development enhance efficiency photocatalytic activity, pivotal advancement clean energy realization decarbonized future.

Language: Английский

Citations

6
Boosting Second Harmonic Generation Efficiency and Nonlinear Susceptibility via Metasurfaces Featuring Split-Ring Resonators and Bowtie Nanoantennas DOI Creative Commons
Yuan‐Fong Chou Chau

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(8), P. 664 - 664

Published: April 11, 2024

This work investigates a metasurface design to achieve remarkable second harmonic generation (SHG) conversion efficiency and enhance effective nonlinear susceptibility using the finite element method. The elements of designed structure are composed rectangular split-ring resonator Ag film, bowtie-shaped nanoantenna, pair Bi bars that induce optical phenomena due nonuniform distribution electric magnetic fields within device surface. simulation results agree perfectly with theory demonstrate outstanding achievements in terms SHG (η) (χeff(2)). Specifically, reaches peak η value 4.544×10−8 an 3.4×104 pm/V. presents novel versatile high χeff(2) metasurface.

Language: Английский

Citations

5