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  1. No Access

    Article

    Assembly Nanoparticle Arrays Decorated with Ultrathin AAO Nanopores for Highly Sensitive SERS Substrate

    Surface-enhanced Raman scattering (SERS) is widely employed because it offers quick, microscopic, and traceless detection. This study used high-voltage and low-voltage ultrasonic oscillation to embed gold-silv...

    Jun Dong, Chenlu Li, Yan Wang, Yi Cao, Yimeng Fan, Qingyan Han, Wei Gao… in Plasmonics (2024)

  2. No Access

    Article

    Tunable Plasmon-Induced-Transparency Effect in a Simple Planar Composite Structure

    A planar metamaterial structure has been designed to obtain surface plasmon-induced-transparency (PIT) effect, which is composed of a nanodisk sandwiched between double rods. From theoretical perspective, the ...

    Jianxia Qi, Yunguang Zhang, Yongkai Wang, Zhanli Cao, Qingyan Han… in Plasmonics (2021)

  3. No Access

    Article

    Enhanced circular dichroism and biosensing application of planar chiral nanostructure by covering graphene nanobelts

    Circular dichroism (CD) of plasmonic nanostructures has broad application prospects, including negative refraction, chemical analysis, and biosensing. Compared with three-dimensional chiral structures, planar ...

    Jun Dong, Qi**g Wang, Wei Gao, Qingyan Han, Kaili Ren… in The European Physical Journal D (2021)

  4. Article

    Open Access

    Nanoscale Vertical Arrays of Gold Nanorods by Self-Assembly: Physical Mechanism and Application

    The unique photonic effect of self-assembled metal nanoparticles is widely used in many applications. In this article, we prepared self-assembled gold nanorod (GNR) vertical arrays substrate by an evaporation ...

    Jun Dong, **ng Zhao, Wei Gao, Qingyan Han, Jianxia Qi… in Nanoscale Research Letters (2019)

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  5. No Access

    Article

    Investigation on Optical Properties of Ag–Au Alloy Nanoparticles

    The outstanding chemical stability of Au and intense localized surface plasmon resonance of Ag make it possible to obtain a nanostructure with a good balance of good chemical stability and optical response. In...

    Caixia Li, Chi Wang, Qingyan Han, Yanni Wu, Hairong Zheng in Plasmonics (2017)

  6. Article

    Open Access

    Unique adjustable UC luminescence pattern and directional radiation of peculiar-shaped NaYF4: Yb3+/Er3+ microcrystal particle

    A new design of peculiar-shaped β-NaYF4: 20% Yb3+/2% Er3+ hexagonal microcrystal (PSβHM) is proposed and its upconversion (UC) luminescence with adjustable color pattern is studied with near infrared excitation. ...

    Qingyan Han, Chengyun Zhang, Chi Wang, Zhao** Wang, Caixia Li… in Scientific Reports (2017)

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  7. No Access

    Article

    Higher Order Fano Resonances and Electric Field Enhancements in Disk-Ring Plasmonic Nanostructures with Double Symmetry Breaking

    Optical properties of disk-ring plasmonic nanostructures with double symmetry breaking are investigated theoretically. Tunable higher order Fano resonance is achieved, and it is sensitive to the degree of asym...

    Junna Li, Tingzhuo Liu, Hairong Zheng, Jun Dong, Enjie He, Wei Gao… in Plasmonics (2014)

  8. No Access

    Article

    Synthesis of Ag-SiO2 composite nanospheres and their catalytic activity

    A simple, mild, and time-saving method is employed to synthesize Ag-SiO2 composite nanospheres with Ag nanoparticles uniformly distributed on the surface of SiO2 nanoparticles. The chemical elements and the morph...

    QingYan Han, GuiAn Li, DeXuan Wang, EnJie He, Jun Dong, Wei Gao… in Science China Chemistry (2014)