A5009431978- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Metamaterials and Metasurfaces Applications
- Photonic Crystals and Applications
- Quantum Dots Synthesis And Properties
- Advanced biosensing and bioanalysis techniques
- Quantum optics and atomic interactions
- Biosensors and Analytical Detection
- Photonic and Optical Devices
- Advanced Antenna and Metasurface Technologies
- Terahertz technology and applications
- Nanocluster Synthesis and Applications
- Copper-based nanomaterials and applications
- Spectroscopy and Chemometric Analyses
- Radio Frequency Integrated Circuit Design
- Electromagnetic Compatibility and Noise Suppression
- Chalcogenide Semiconductor Thin Films
- Microwave Engineering and Waveguides
- Orbital Angular Momentum in Optics
- Analytical chemistry methods development
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
- Water Quality Monitoring and Analysis
- ZnO doping and properties
- Photochromic and Fluorescence Chemistry
West Anhui University
2022-2024
South China Normal University
2019-2023
Chongqing University
2023
Institute of Solid State Physics
2018-2019
Chinese Academy of Sciences
2018-2019
Hefei University of Technology
2014-2019
Hefei University
2014
Abstract As alternatives to electronic devices, optically active structures from responsive nanomaterials offer great opportunity for building up smart functional sensors. This work reports on the construction and application of photonic microcapsules (PMCs) colorimetric temperature microsensors, enabling miniaturization injectable local micro‐area sensing integration large‐area sensing. Monodispersed PMCs are produced by in situ photopolymerization hydrogel shells cholesteric liquid crystal...
Toroidal dipole resonance can significantly reduce radiation loss of materials, potentially improving sensor sensitivity. Generally, toroidal response is suppressed by electric and magnetic dipoles in natural making it difficult to observe experimentally. However, as 2D metamaterials, metasurfaces weaken the dipole, enhancing response. Here, we propose a new graphene-integrated metasurface an ultra-sensitive chemical sensor, capable qualitative detection chlorothalonil terahertz region, down...
In this work, we demonstrate an analogue of electromagnetically induced reflection (EIR) effect with hybrid structure consisting a silica (SiO2) square array layer embedded in graphene-dielectric-Au film constructed F-P cavity. It is shown that the SiO2 and cavity create transverse waveguide high quality factor (Q-factor) longitudinal modes, their destructive interference effectively forms EIR-like effect, which benefits for obtaining group delay. addition, C4 symmetric ensures...
A controllable and flexible route is presented for the fabrication of Ag-nanosheets-built micro/nanostructural ordered arrays via in situ conversion on Cu2O-coated silicon nanocone (SNC) platform AgNO3-contained solution. The pre-prepared by reactive ion etching organic colloidal monolayer-covered wafer, Cu sputtering deposition oxidation. obtained Ag micro/nanostructured array consists nearly spherical micro-sized particles, which are hexagonally arranged substrate. particles built...
This work reports a phase difference modulated coupling of two surface plasmon polariton (SPP) sources in symmetrical two-channel metal-insulator-metal (MIM) waveguide device. In the device, with different initial phases interact indirectly through function rectangular cavity. With varying, we have achieved tunable SPP followed by continuously adjustable filtering property and Fano resonance. Further results show that resonance cavity can be well described electromagnetic wave interference...
When the peak positions of propagating surface plasmon polaritons (SPPs) and localized resonances (LSPRs) become very close to each other in a single nanoparticle array structure, an anticrossing behavior (SPRs) usually occurs, which can considerably enhance near-field intensity. We first report on interaction two types SPRs dimer nanodisk–SiO2 spacer–gold film hybrid sandwich structure. The does not appear always due various modes LSPRs such structures. Moreover, crossing also appears based...
Charge transport and recombination kinetics in urchin-like Zn/ZnO is discussed based on a dynamic IMVS model correlating to its configuration.
We propose and validate an approach to obtain ultra-broadband terahertz absorber by taking the advantages of absorption surface plasmon resonance in combination with intrinsic mode. The is composed a gold (Au) bottom layer patterned graphene embedded TOPAS polymer, exhibiting coupling modes. single-layer C4 symmetric regular polygons which are arranged circle circumscribed (CUPs) or inscribed (CIPs) at same periodicity for comparison. With increase side number ( <italic...
Surface enhanced Raman scattering (SERS) substrates with both high activity and long term chemical-stability have been expected in the practical application of SERS-based detection. In this paper, Au-Ag bimetal nanocrystals are fabricated based on template-etching reaction Ag nanocubes-contained cetylpyridinium chloride (CPC) aqueous solution via adding HAuCl4 solution. The obtained alloyed hollow structure. Further, it has found that increasing Au/Ag molar ratio, shape evolve from truncated...
A vertically polarized (VP), electromagnetic interference (EMI) suppressed millimeter-wave (mm-W) active heatsink antenna based on the gap waveguide technology is presented, which combines a compact passive and an mm-W power amplifier (PA) circuit. The consists of groove-gap (GGW) feeding structure, can enable VP radiation, introduce two adjustable out-of-band filtering nulls, enhance in-band suppression level. Meanwhile, structure compatible with PA circuit layout, GGW-structure well...
Fabrication of large-area devices with patternable nanostructures is important for practical applications in optical or electrical devices. In this work, we describe an easy and environment-friendly method preparing nano-dot (ND) arrays via the electrolytic reaction a metal oxide film. NDs various size morphology can be obtained by adjusting applied voltage, electrolysis time, film thickness indium tin (ITO) layer. High-density 50-60 nm 25-nm-thick ITO at 150 V 1.5 min under water droplet...
We fabricated flexible, three-dimensional (3D) ordered silicon nanowire (SiNW) arrays decorated with high-density silver nanoparticles (AgNPs) for the sensitive and reproducible detection of pesticide residues. These sensors demonstrated a limit 10
Dimer nanoparticles in a sandwich structure exhibit large electric-field intensity enhancement. The dispersion relation between the surface plasmon resonance (SPR) and particle size has not been reported yet, owing to effects of size, shape, materials, etc. A structure, which contains nano-right-triangle dimer array, SiO2 spacer, Au film, is proposed, with significant enhancement polarization-changing properties. dependence peak positions two localized (LSPR) modes as function triangle...
It is difficult for nano-scale optical devices to resonate with terahertz waves. By using a nano-discretized metamaterial (NDMM), we converted gap-localized electromagnetic response into spectroscopy. A switch of an electromagnetically induced transparency (EIT) analog acquired by displacement current in NDMMs and strongly dependent on the discretization nanogap. controlling distance nanogap, EIT can be determined, which, turn, linked polarization electric field. If field perpendicular...
We proposed and numerically demonstrated an analog of electromagnetically induced transparency (EIT) in a Chinese character 王-shaped all-dielectric metasurface the near-infrared region. Through asymmetric adjustment, high transmittance EIT-like optical response both single double windows can be realized. The responses are clearly interpreted by destructive interference between bright dipolar moment trapped magnetic mode through metasurface, dark causes window to split into two peaks. This...
An analog of an electromagnetically induced transparency C4 symmetric device with a silicon array-dielectric layer-Au film F–P cavity is designed. Through the coupling between waveguide and modes, polarization-independent terahertz electromagnetic (EIT)-like effect obtained. The analysis two types modes in different orders shows EIT-like effect, but could affect properties. Moreover, symmetry structure makes it have characteristics. This research conducive to obtaining devices further on...