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Article
Optics
Chaobiao Zhou et al.
Summary: This study investigates the transformation of symmetry-protected bound states in the continuum (BICs) into quasi-BICs (QBICs) with high-quality factors through introducing broken geometry symmetry in a dielectric metasurface. The authors demonstrate that BICs can be sustained at the Gamma-point in an asymmetric dielectric metasurface. The study also shows that the shape of the hole does not affect the QBIC, and different wavelengths can be achieved by using different hole shapes. The experimental results confirm that the Q-factor of QBIC can reach almost 5,000. These findings enrich the library of BICs and have significant implications for the development of high-performance photonics devices.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Jiankai Xiong et al.
Summary: This article presents a divide-and-conquer deep learning model for the design of plasmonic stack metamaterials (PSMs). The model demonstrates significant reduction in prediction error and training parameters in the forward network, supporting powerful inverse design from spectra to PSM structures. Additionally, a flexible tool based on free customer definition is developed for real-time design of metamaterials with various circuit-analog functions.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Yang Chen et al.
Summary: Photons with spin angular momentum possess intrinsic chirality, which has a wide range of applications. Current experimental attempts rely on false/extrinsic chirality, but this study has achieved true/intrinsic chiral response using resonant metasurfaces, achieving near-unity circular dichroism and a high quality factor for visible frequencies.
Editorial Material
Multidisciplinary Sciences
Chris Stokel-Walker et al.
Article
Multidisciplinary Sciences
Lujun Huang et al.
Summary: The authors propose a simple strategy to achieve ultrahigh-Q guided-mode resonances by introducing a patterned perturbation layer on top of a multilayer-waveguide system. Experimental measurements show high-Q resonances with Q-factors up to 2.4 x 10(5). The resonant wavelength can be tuned by adjusting the lattice constant of the top perturbation layer.
NATURE COMMUNICATIONS
(2023)
Review
Materials Science, Multidisciplinary
Yaping Qi et al.
Summary: With the development of Raman spectroscopy and the expansion of its application domains, conventional methods for spectral data analysis have shown limitations. Machine learning techniques have been shown to efficiently extract valuable information from spectral data, creating unprecedented opportunities for analytical science.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zhipeng Ding et al.
Summary: This study introduces a novel approach using a bilayer graphene metasurface absorber to achieve arbitrary manipulation of absorption windows. The artificial neural network-based inverse design method allows for rapid and accurate selection of structural parameters and achieves a tunable absorption bandwidth of 6.70 THz. Through mechanistic analyses, it is demonstrated that the bilayer graphene metasurface absorber can achieve tunable absorption between different modes.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
Zhipeng Ding et al.
Summary: This study designs and optimizes pyramid-based and inverted pyramid-based metasurface absorbers using machine learning algorithms. The results show wide absorption bandwidths and low errors, offering a new approach for designing complex systems related to electromagnetic wave absorption, reflection, and transmission propagation.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Evelin Csanyi et al.
Summary: Metal halide perovskite quantum dots (PQDs) show exceptional photoluminescence properties, but their post-synthesis tuning is limited. This paper introduces the use of Si nanoellipse arrays to tailor perovskite emissions. By coupling perovskite excitonic states with quasi-bound-states-in-the-continuum modes, significant tuning range and polarization control are achieved, promising transformative advancements in perovskite technologies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Analytical
Zhenbiao Wang et al.
Summary: The roughness of gold nanohole metasurfaces greatly affects the plasmonic sensing of tumor markers; high-roughness metasurfaces show higher surface sensitivity to multilayer polyelectrolyte molecules; high-roughness metasurfaces also demonstrate higher immunoassay sensitivity to multiple lung cancer biomarkers.
Article
Nanoscience & Nanotechnology
Wenzhuang Ma et al.
Summary: This study develops a high-performance design paradigm combining deep learning and multi-objective double annealing algorithms to optimize multilayer nanostructures for maximizing solar spectral absorption and minimum infrared radiation. Experimental results demonstrate exceptional absorption in the solar spectrum (calculated/measured = 0.98/0.94) and low average emissivity in the infrared region (calculated/measured = 0.08/0.19) of the designed absorber. The absorber has the potential to save up to 1743 kW h/m(2) of energy annually in areas with abundant solar radiation resources.
Article
Materials Science, Multidisciplinary
Feng Wu et al.
Summary: In this paper, we theoretically propose a polarization-dependent bound state in the continuum (BIC) in a compound grating waveguide structure based on the selectable guided resonance at near-infrared wavelengths. By utilizing the unique resonant property and polarization-dependent property of the quasi-BIC, the transverse shift of the photonic spin Hall effect (PSHE) can be intensively enhanced to the order of hundreds of micrometers, and this enhancement is robust against the geometric parameters. Our work not only provides an all-dielectric platform to achieve giant PSHE, but also offers a viable approach to design high-performance PSHE-based optical devices.
Article
Chemistry, Multidisciplinary
Wei Ma et al.
Summary: In this study, a new approach is proposed for the automatic design of multifunctional metasurfaces by embedding machine learning models in optimization loops. Unlike traditional methods, this end-to-end framework maximizes the design space and pushes the multifunctional design capacity to its limit, resulting in experimentally demonstrated metasurface focusing lenses and holograms. The data-driven scheme shows superior capability in photonics design and has the potential to accelerate the development of complex devices and systems for optical display, communication, and computing.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Qiuguo Li et al.
Summary: Cu2Te microdisks were successfully prepared using GaTe as Te source, exhibiting a new red emission band in the photoluminescence spectrum and functioning as an efficient optical microcavity for red lasing. These microdisks also serve as ideal substrates for surface enhanced Raman scattering, with high enhancement factor and detection limit to nanomolar level.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Zhaogang Dong et al.
Summary: This paper presents the near-field localization of true bound-states-in-the-continuum (BIC) resonance on arrays of silicon nanoantennas using electron energy loss spectroscopy. By breaking the antenna symmetry, emissive quasi-BIC resonances are observed. It is also demonstrated that the quasi-BIC resonances can significantly enhance localized light emission via the Purcell effect.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Multidisciplinary Sciences
Zhaogang Dong et al.
Summary: A study has found that the design of nanoantennas can achieve saturated and bright red colors with high reflectance, surpassing traditional red pigments. This design also has potential applications in information encryption.
Article
Optics
Zi-Lan Deng et al.
Summary: Coupled resonances in non-Hermitian systems can be used to achieve extreme control over diffraction orders and tailor the overall spectral response, enabling control over singular features.
LASER & PHOTONICS REVIEWS
(2022)
Article
Physics, Multidisciplinary
Yang Chen et al.
Summary: This study demonstrates strong coupling between quasibound states in the continuum of a high-Q metasurface, assisted with externally introduced enantiomers of weak chirality. A chirality-involved Hamiltonian is established to quantitatively describe the correlation between the coupling strength and the chirality of such systems, providing an insightful recipe for enhancing the coupling of resonant states further in the presence of quite weak chirality. The findings present a distinct strategy for manipulating optical coupling between resonances, revealing opportunities in chiral sensing, topological photonics, and quantum optics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Jiayi Wang et al.
Summary: This paper proposes a data cropping algorithm that significantly reduces the simulation time in the DNN pre-training process by cropping simulated data and adding random data. By using this algorithm and a target-driven DNN, a metasurface structure with a low profile and broad transmission characteristics is successfully designed.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yi Tian et al.
Summary: This study investigates the roles of different types of dielectrics in SERS effects, and shows that SERS effects can be improved by one order of magnitude by introducing dielectric walls with plasmonic layers and by adding extra gold nanoparticles on thin dielectric layers. The designed SERS chips, fabricated using nanoimprint lithography, demonstrate a high enhancement factor and can detect trace mercury ions as low as 1 ppt.
Article
Optics
Xueying Liu et al.
Summary: This study proposes an inverted dielectric metagrating to enhance the broadband THz fingerprint detection of trace analytes on a planar sensing surface. By tuning the asymmetry parameter, the near-field intensities within the analytes can be evenly boosted. Compared to conventional methods, the THz fingerprint peak value is dramatically elevated.
PHOTONICS RESEARCH
(2022)
Review
Optics
Shixiong Yin et al.
Summary: Recent progress in nanophotonics and material science has led to a strong interest in optically-induced material dynamics. This perspective explores the connection between Floquet matter and time metamaterials, highlighting the opportunities for wave manipulation and control through nontrivial modulation dynamics and tailored material properties.
Review
Optics
Dasol Lee et al.
Summary: This article reviews the current status and applications of hyperbolic metamaterials, highlighting their highly anisotropic nature and hyperbolic dispersion relation. It explores the advantages of these materials in various applications such as super-resolution imaging, negative refraction, and enhanced emission control. The article also discusses the possibility of integrating artificial structured hyperbolic metamaterials with natural two-dimensional hyperbolic materials.
Review
Optics
Wei Ma et al.
Summary: Innovative approaches and tools, particularly deep learning, are shaping the field of photonics by offering efficient means to design photonic structures and providing data-driven solutions complementary to traditional physics-based methods. The progress in deep-learning-based photonic design is promising, with various model architectures showing potential applications in specific photonic tasks.
Article
Physics, Multidisciplinary
Pablo Martinez Pancorbo et al.
Summary: The emergence of metal-free surface-enhanced Raman scattering (SERS) substrates has provided promising alternatives for reliable, high-sensitivity Raman spectroscopy. This perspective article reviews the theory of metal-free SERS, introduces promising substrates, clarifies challenges, provides potential solutions, and discusses unexploited applications.
Article
Multidisciplinary Sciences
G. W. K. Moore et al.
Summary: Ice arches at the northern and southern ends of Nares Strait, a key passage in the Arctic, are forming for shorter durations, leading to increased ice transport and accelerating the export of multi-year ice.
NATURE COMMUNICATIONS
(2021)
Review
Biology
Anand M. Shrivastav et al.
Summary: The proliferation and transmission of viruses pose a threat to global biosecurity, with early diagnosis and control being critical. Plasmonic-based technologies, such as surface plasmon resonance and surface-enhanced Raman scattering, offer promising solutions for virus detection and biosensor development.
COMMUNICATIONS BIOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Eitan Oksenberg et al.
Summary: By monitoring the interfacial environment of a thousand single nanocavities with slightly varied resonance energies, an effective absorption spectrum of metal-bound molecules and a rich plasmon-driven chemistry landscape was constructed. The unavoidable energy losses associated with metals can carry valuable information on energy transfer to the adsorbed molecules. Using methylene blue as a model system, shifts in the absorption spectrum of molecules following surface adsorption were measured, revealing a rich plasmon-driven reactivity landscape with distinct reaction pathways occurring in separate resonance energy windows.
NATURE NANOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Elizaveta Melik-Gaykazyan et al.
Summary: There is a close connection between Fano and quasi-BIC resonances in high-index dielectric nanostructures, which show great potential for applications in nanoscale lasers and sensors. Our experimental results demonstrate the relationship and suggest a unified approach for analyzing sharp resonances in subwavelength nanostructures.
Article
Chemistry, Multidisciplinary
Aleksandrs Leitis et al.
Summary: Metasurfaces have emerged as a breakthrough platform for manipulating light at the nanoscale, with the ability to enable various optical functionalities. By realizing functional metasurfaces on almost completely transparent free-standing metal-oxide membranes, the constraints of material choice have been overcome, allowing for highly efficient and wafer-scale manufacturing techniques for mid-infrared metasurfaces.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Christopher Yeung et al.
Summary: This study presents a global deep learning-based inverse design framework for optimizing photonic metasurfaces by training a neural network on images encoded with material and structural parameters. The network can identify effective metasurface designs based on target absorption spectra and generate multiple design variants with nearly identical absorption spectra.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Optics
Feng Wu et al.
Summary: By selectively exciting resonant guided modes in a compound grating waveguide structure, dual bound states in the continuum (dual BICs) are achieved, leading to large positive and negative Gh shifts. Unlike conventional resonance, the shifts assisted by dual quasi-BICs have 100% reflectance, making them easier to detect and utilize in high-performance sensors and light storage devices.
Article
Materials Science, Multidisciplinary
Song Han et al.
ADVANCED OPTICAL MATERIALS
(2020)
Article
Multidisciplinary Sciences
Jung-Min Oh et al.
NATURE COMMUNICATIONS
(2020)
Article
Nanoscience & Nanotechnology
Matz Liebel et al.
NATURE NANOTECHNOLOGY
(2020)
Review
Optics
Yang Yu et al.
ADVANCED PHOTONICS
(2020)
Article
Chemistry, Physical
Chao-Yu Li et al.
Article
Multidisciplinary Sciences
Jicheng Jin et al.
Article
Chemistry, Multidisciplinary
Anirban Kundu et al.
Article
Multidisciplinary Sciences
Andreas Tittl et al.
Review
Multidisciplinary Sciences
Keith T. Butler et al.
Article
Physics, Multidisciplinary
Shaimaa I. Azzam et al.
PHYSICAL REVIEW LETTERS
(2018)
Article
Materials Science, Multidisciplinary
Di Wu et al.
JOURNAL OF MATERIALS CHEMISTRY C
(2018)
Article
Multidisciplinary Sciences
Ashok Kodigala et al.
Review
Optics
Mikhail F. Limonov et al.
Review
Nanoscience & Nanotechnology
Song-Yuan Ding et al.
NATURE REVIEWS MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Zhaogang Dong et al.
Article
Optics
Xiaoze Liu et al.
Article
Chemistry, Physical
Stephanie Dodson et al.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2013)
Article
Materials Science, Multidisciplinary
Jeffrey M. McMahon et al.
Article
Multidisciplinary Sciences
Jian Feng Li et al.
