Publications by authors named "A-Q Wei"

Two-dimensional (2D) layered materials without centrosymmetry, such as GaSe, have emerged as promising novel optical materials due to large second-order nonlinear susceptibilities. However, their nonlinear responses are severely limited by the short interaction between the 2D materials and light, which should be improved by coupling them with photonic structures with strong field confinement. Here, we theoretically design photonic crystal circular Bragg gratings (CBG) based on hole gratings with a quality factor as high as = 8 × 10, a mode volume as small as = 1.

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  • The study introduces a new metastructure made of silicon nanoblock tetramer clusters aimed at enhancing surface sensing capabilities by utilizing polarization-independent properties through bound states in the continuum (BICs).
  • Three quasi-BIC modes were identified at specific wavelengths, achieving high sensitivity and quality factors, confirming the effectiveness of the design for precision sensing applications.
  • The research utilized advanced simulation methods to explore electromagnetic field behaviors and demonstrated the system's robustness and performance through experimental verification involving varying concentrations of CaCl solutions.
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  • The all-dielectric metasurface shows promise as an innovative platform for creating effective optical sensors, particularly utilizing Fano resonances.
  • A specific sensor design using a hollow herringbone metasurface demonstrates high sensitivity for both temperature and refractive index measurements, with impressive simulation results indicating a Q factor of 2.6 × 10 and a sensitivity of 232 nm/RIU.
  • Experimental results confirm these findings, yielding a Q factor of 5366 and a sensitivity of 178 nm/RIU, which enhances the potential use of these sensors in biochemical analysis and environmental monitoring.
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Single-phase BaMSiO (M = Yb, Er, Y, Ho) ceramics have been investigated for their crystal structures, microwave dielectric properties, flexural strength, and potential applications in dielectric antennas. Rietveld refinement and TEM analysis revealed that the BaMSiO ceramics exhibit a monoclinic structure (space groups: 2/). The ε of the BaMSiO ceramics was dominated by ionic polarizability and ρ.

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  • High-performance semiconductor devices are essential for advancing miniaturization and integration in technology, despite challenges in combining multiple functions.
  • A newly developed dual-mode device utilizes an ultra-thin AlO passivation layer with a PbS/Si hybrid heterojunction to perform both optoelectronic detection and neuromorphic functions.
  • In optoelectronic mode, it effectively detects a wide range of wavelengths and produces high-quality images, while in neuromorphic mode, it demonstrates strong performance in classifying digits with high accuracy, highlighting its potential for intelligent applications.
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is an important pest of , distributed in China, Korea, and Japan. In recent years, its damage to has become increasingly serious, causing enormous economic losses in China. This study and prediction of current and future suitable habitats for in China can provide an important reference for the monitoring, early warning, prevention, and control of the pest.

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The rapid advancement of global economic integration and urbanization has severely damaged the stability of the ecological environment and hindered the ecological carbon sink capacity. In this study, we evaluated the spatiotemporal evolution pattern of landscape ecological risk (LER) in the Loess Plateau from 2010 to 2020. This was examined under the driving mechanism of human and natural dual factors.

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PM remote sensing data was applied in this study, and Theil-Sen Median trend analysis and the Mann-Kendall significance test were utilized to analyze the temporal and spatial variation in PM in the Shandong Province from 2000 to 2021. The influencing power of the influencing factors on the spatial differentiation of PM concentration in the Shandong Province was detected at the provincial-city-county levels based on Geo-detector data. The results showed that:① on the temporal scale, the mean (PM)in the Shandong Province ranged from 38.

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An amplitude analysis of the B^{0}→K^{*0}μ^{+}μ^{-} decay is presented using a dataset corresponding to an integrated luminosity of 4.7  fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the coefficients associated to short-distance physics effects, sensitive to processes beyond the standard model, are extracted directly from the data through a q^{2}-unbinned amplitude analysis, where q^{2} is the μ^{+}μ^{-} invariant mass squared.

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TRPV1 channel agonists and antagonists, which have powerful analgesic effects without the addictive qualities associated with traditional analgesics, have become a focus area for the development of novel analgesics. In this study, quantitative structure-activity relationship (QSAR) models for three bioactive endpoints (K, IC, and EC) were successfully constructed using four machine learning algorithms: SVM, Bagging, GBDT, and XGBoost. These models were based on 2922 TRPV1 modulators and incorporated four types of molecular descriptors: Daylight, E-state, ECFP4, and MACCS.

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Based on a Q-type aspheric surface, a wide working distance zoom iris recognition lens is designed. The lens has an aperture of 2.0 and a working distance of 200-1200 mm.

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Fano resonance with high Q-factor is considered to play an important role in the field of refractive index sensing. In this paper, we theoretically and experimentally investigate a refractive index sensor with high performance, realizing a new approach to excite multiple Fano resonances of high Q-factor by introducing an asymmetric parameter to generate a quasi-bound state in the continuum (BIC). Combined with the electromagnetic properties, the formation mechanism of Fano resonances in multiple different excitation modes is analyzed and the resonant modes of the three resonant peaks are analyzed as toroidal dipole (TD), magnetic quadrupole (MQ), and magnetic dipole (MD), respectively.

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Colloidal CdSe/ZnS quantum dots (QDs) exhibit excellent optical properties for wide potential applications in light-emitting diodes, solar concentrators, and single-photon sources. However, the ultra-thin films with low concentration of QDs still encounter inefficient photoluminescence (PL) and poor directionality of radiation, which need to be enhanced using nanophotonics device designs. Here we design and experimentally demonstrate an on-substrate silicon nitride (SiN) photonic crystal (PhC) microcavity encapsulated by a layer of PMMA hosting CdSe/ZnS QDs.

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Immune checkpoint blockade (ICB) can produce durable responses against cancer. We and others have found that a subset of patients experiences paradoxical rapid cancer progression during immunotherapy. It is poorly understood how tumors can accelerate their progression during ICB.

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The study of the Cabibbo-favored semileptonic decay Λ_{c}^{+}→Λe^{+}ν_{e} is reported using a 4.5  fb^{-1} data sample of e^{+}e^{-} annihilations collected at center-of-mass energies ranging from 4.600 GeV to 4.

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A total of 33 structurally diverse isoquinoline alkaloids were isolated from the rhizomes of Menispermum dauricum, including seventeen benzylisoquinoline analogues (menisperdaurines A-Q, 1-17), five protoberberine analogues (menisperdaurines R-V, 18-22), a quaternary phenanthrene alkaloid (menisperdaurine W, 23) and ten known compounds (24-33). Compound structures, including absolute configurations, were determined by extensive spectroscopic methods, quantum chemical calculations of chemical shifts, and calculated and experimental electronic circular dichroism (ECD) data. Compounds 1-5 were glycosidic benzylisoquinolines with glucose moieties attached at the C-12 position.

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This study successfully prepared a novel sulfur-doped nano zero-valent iron @biochar (BM-SnZVI@BC) by modifying corn stover biochar with Fe and S using a mechanical ball milling method for effective phosphorus (P) adsorption in the waterbody. Batch experiments revealed that BM-SnZVI@BC (BC/S/Fe = 3:1:1) reached a Q of 25.00 mg P/g and followed PFO and Langmuir models.

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Article Synopsis
  • Tumor boards at National Cancer Institute-designated Comprehensive Cancer Centers (NCI-CCCs) share expert insights, but these discussions typically don’t reach the broader oncology community.* -
  • An oncologist-only Q&A website, theMednet, was utilized to document and distribute findings from these tumor board discussions, resulting in 368 Q&As that reached thousands of oncologists nationwide.* -
  • The impact of the Q&As was significant, with many clinicians reporting confirmation of their practices or a willingness to change their future approaches based on the shared knowledge, ultimately enhancing patient care.*
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Background: There are three epidemiological types of visceral leishmaniasis in China, which are caused by Leishmania strains belonging to the L. donovani complex. The mechanisms underlying their differences in the population affected, disease latency, and animal host, etc.

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Metastasis is the primary cause of cancer mortality, and cancer frequently metastasizes to the liver. It is not clear whether liver immune tolerance mechanisms contribute to cancer outcomes. We report that liver metastases diminish immunotherapy efficacy systemically in patients and preclinical models.

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Background: Sequencing technologies have advanced to the point where it is possible to generate high-accuracy, haplotype-resolved, chromosome-scale assemblies. Several long-read sequencing technologies are available, and a growing number of algorithms have been developed to assemble the reads generated by those technologies. When starting a new genome project, it is therefore challenging to select the most cost-effective sequencing technology, as well as the most appropriate software for assembly and polishing.

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Metal-organic frameworks (MOFs) have recently emerged as appealing platforms to construct microlasers owing to their compelling characters combining the excellent stability of inorganic materials and processable characters of organic materials. However, MOF microstructures developed thus far are generally composed of multiple edge boundaries due to their crystalline nature, which consequently raises significant scattering losses that are detrimental to lasing performance. In this work, we propose a strategy to overcome the above drawback by designing spherically shaped MOFs microcavities.

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The aim of the study was to evaluate the characteristics of dentin ablation with a high pulse repetition rate Q-switching 2.79 μm laser. Dentin was ablated using a homemade Q-switching Er:YSGG laser with a high pulse repetition rate.

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The article "MicroRNA-28-5p regulates glioma cell proliferation, invasion and migration by targeting SphK1, by H.-S. Chen, A.

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