A5080358963- Plasmonic and Surface Plasmon Research
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Metamaterials and Metasurfaces Applications
- Terahertz technology and applications
- Orbital Angular Momentum in Optics
- Optical Coatings and Gratings
- Microwave Engineering and Waveguides
- Constructed Wetlands for Wastewater Treatment
- Advanced Optical Sensing Technologies
- Wetland Management and Conservation
- Laser Design and Applications
- Image Retrieval and Classification Techniques
- Heavy metals in environment
- Advanced Fiber Optic Sensors
- Advanced Measurement and Metrology Techniques
- Gold and Silver Nanoparticles Synthesis and Applications
- Cancer-related molecular mechanisms research
- Laser-Plasma Interactions and Diagnostics
- Surface Roughness and Optical Measurements
- Strong Light-Matter Interactions
- Video Analysis and Summarization
- Spectroscopy and Laser Applications
- Optical Systems and Laser Technology
- Wireless Body Area Networks
Nanjing Agricultural University
2025
Beijing University of Posts and Telecommunications
2024
Jiangsu University
2024
Zhejiang University
2010-2022
City College
2022
Zhejiang University of Technology
2022
Hangzhou Medical College
2022
Shenzhen Technology University
2020
Nanyang Technological University
2015-2019
Tsinghua University
2011-2017
The spoof surface plasmon polariton (SPP) waveguide, which could support well-confined waves along an ultrathin corrugated metallic strip, is one of the most advantageous candidates in integrated circuits due to remarkable properties low crosstalk, loss, and packaging minimization. Many devices based on SPP waveguide have emerged, but it still a challenge manipulate freely real-time. Here, we propose programmable multifunctional device by loading varactor diodes between adjacent teeth...
Surface plasmon polaritons (SPPs) propagating along a structure consisting of single row metallic wedges periodically protruding out planar surface are investigated theoretically. It is shown that such can sustain mode spoof SPPs in the terahertz region, whose fields highly confined transverse plane. The guiding possesses excellent properties as good modal shape, large propagation length, and low bending loss, making it promising candidate for routing radiation integrated circuits.
We propose and experimentally demonstrate an approach to efficiently tune the dispersion of a designer-plasmonic resonator, or plasmonic 'meta-atom', by incorporating extra ground plane underneath. that this is able enhance resonances, enhancing effect can render those higher-order azimuthal modes, being absent in previously reported resonators, observable. After plane, all resonance modes are red shifted with their Q factors enhanced. By increasing separation from planar resonator...
Abstract Transport of subwavelength electromagnetic (EM) energy has been achieved through near‐field coupling highly confined surface EM modes supported by plasmonic nanoparticles, in a configuration usually on two‐dimensional (2D) substrate. Vertical transport similar along the third dimension, other hand, can bring more flexibility designs functional photonic devices, but this phenomenon not observed reality. In paper, designer (or spoof) plasmon resonators (‘plasmonic meta‐atoms’) are...
We propose a scheme of guiding and manipulating terahertz waves that features tight confinement large propagation length, even when the waveguide lateral dimensions are well in subwavelength regime. In tapered structure proposed groove waveguide, guided mode can be stopped at different positions for frequencies it travels along waveguide. Additionally, we demonstrate nearly 100% transmission through sharp 90° bend achieved this
Abstract We experimentally demonstrate that multiple high-order spoof localized surface plasmons (spoof-LSPs) modes can be supported on a complementary metallic spiral structure, which were absent in the previously reported spoof-LSPs modes. Through exact numerical simulations and near-field imaging experiments, we directly observe these at microwave frequencies. also show higher-order exhibit larger frequency shifts caused by local environmental refractive index change than low-order Hence...
This communication proposes a measurement method of dispersion curves for spoof surface plasmon polariton (SPP) transmission lines (TLs), providing feasible solution to obtain measured curves. The proposed is generalization the traditional Bianco-Parodi method, in which general formulas are given extract phase constants at different frequencies from S-parameters. new can not only eliminate effect complicated transition structures, but also be suitable higher order modes. In addition,...
We experimentally demonstrate a type of waveguiding mechanism for coupled surface-wave defect modes in photonic crystal. Unlike conventional spoof surface plasmon waveguides, is achieved through weak coupling between tightly localized cavities an otherwise gapped crystal, as classical wave analogue tight-binding electronic wavefunctions solid state lattices.
Abstract Localized spoof surface plasmon polaritons (spoof-SPPs) in a graded spoof-plasmonic resonator chain with linearly increasing spacing are experimentally investigated at microwave frequencies. Transmission measurements and direct near-field mappings on this show that the propagation of localized spoof-SPPs can be cutoff different positions along under frequencies due to coupling between adjacent resonators. This mechanism used guide specific depending frequency thereby implement...
Routing an electromagnetic pulse around sharp corners without scattering is in great demand for photonic on-chip communication, but fundamentally difficult, because of the drastic momentum mismatch before and after turns corner. In experiments using a special type crystal on single metal surface, authors send surface-wave pulses multiple 90\ifmmode^\circ\else\textdegree\fi{} bends, with no perceptible scattering. This approach overcomes longstanding bottleneck routing, may find use...
A new type of microstrip line on which the spoof surface plasmon polaritons (SPPs) can propagate in microwave band is developed and a scheme for reducing wide-band crosstalk between transmission lines proposed. The structure designed by introducing periodic subwavelength hairpin edge conventional lines. Numerical methods are used to analyse dispersion relation guiding bandwidth regime. Besides, authors experimentally verify that such periodically structured support SPPs frequency range 200 8...
Surface plasmon polaritons (SPPs) on metal surfaces corrugated periodically with shallow grooves are theoretically investigated in terahertz (THz) frequency range. Different geometrics of the analyzed, and it is found that SPPs surface trapeziform have best field confinement. The influence absorption at THz frequencies performance spoof also examined. It shown long propagation length subwavelength confinement simultaneously available for structured grooves. Metal such a structure may lead to...
In order to avoid a fringe jump caused by high plasma density and pellet injection [Y. Zhou et al., Rev. Sci. Instrum. 87, 11E107 (2016)], new CO2 dispersion interferometer is designed commissioned on HL-2A for average line-density measurement feedback control. The second harmonic technology in this system eliminates the phase shift mechanical vibration. Signals are processed digital comparator can be monitored real time. A series of experiments conducted study characteristics such as...
Abstract Background: Breast cancer is the most prevalent common disease among women, and it characterized by a high rate of tumor development heterogeneity. stem cells (CSCs) may well contribute to these pathological properties, but mechanisms underlying their self-renewal maintenance are still elusive. Methods: (BCSCs) were isolated using flow cytometry. Both in vitro vivo functional assays performed investigate role HOTAIR tumorigenic activity stemness BCSCs. Real-time PCR, Western blot,...
We present a novel type of terahertz plasmonic cross resonant antenna capable focusing light into single deep subwavelength focal point at its resonance frequency, which consists two perpendicular dipole antennas with common feed gap and placed in square aperture perforated metal film. demonstrate that, on resonance, the can obtain large electromagnetic field intensity enhancement ranges four orders magnitude inside gap. The simulations show that frequencies enhancements be flexibly tuned as...
This work was sponsored by the Zhejiang Provincial Natural Science Foundation of China (LY14F030013, LY17F050008 and LY18F020025); (NSFC) (61605097).
We propose and analyze a type of broadband plasmonic nanoantenna capable localizing enhancing magnetic field at several wavelengths over large spectral band, which is formed by three or four metallic nanowires with common junction. demonstrate that the properties nanoantenna, such as response intensity enhancement, can be tailored engineering geometric parameters varying ellipticity elliptically polarization. Multi-wavelength operation provides tremendous opportunities for imaging...
We report an experimental realization of a new type topology-controlled photonic cavities in valley crystals by adopting judiciously oriented mirrors to localize the valley-polarized edge states along their propagation path. By using microwave frequency- and time-domain measurements, we directly observe strong confinement electromagnetic energy at mirror surface due extended time delay required for index flipping. Moreover, experimentally demonstrate that both degree localization quality...
We propose and experimentally demonstrate a broadband slow-wave system in surface-wave photonic crystal based on non-uniform line-defect waveguide with graded metallic pillars, whose dispersions cutoff frequencies vary gradually along the waveguide. Since group velocity of designer surface plasmons at is zero, we show that waves can be slowed stopped different positions under frequencies. Experimental evidence including transmission measurements direct near-field profile imaging performed...