A5100459871- Terahertz technology and applications
- Metamaterials and Metasurfaces Applications
- Plasmonic and Surface Plasmon Research
- Photonic and Optical Devices
- Orbital Angular Momentum in Optics
- Optical measurement and interference techniques
- Advanced Measurement and Metrology Techniques
- Advanced Antenna and Metasurface Technologies
- Millimeter-Wave Propagation and Modeling
- Photonic Crystals and Applications
- Advanced Fiber Laser Technologies
- Optical Systems and Laser Technology
- Advanced Fiber Optic Sensors
- Microwave Engineering and Waveguides
- Cold Atom Physics and Bose-Einstein Condensates
- Perovskite Materials and Applications
- Antenna Design and Analysis
- Optical Network Technologies
- Quantum optics and atomic interactions
- Photonic Crystal and Fiber Optics
- Spectroscopy and Laser Applications
- Optical Coatings and Gratings
- Advanced Chemical Sensor Technologies
- Quantum Dots Synthesis And Properties
- Gold and Silver Nanoparticles Synthesis and Applications
Guilin University of Electronic Technology
2016-2025
Tsinghua University
2024
Hohai University
2024
New York University
2024
Bielefeld University
2020-2024
Guilin University
2006-2023
Taiyuan University of Technology
2022
Huazhong University of Science and Technology
2022
Beijing Advanced Sciences and Innovation Center
2021
Beihang University
2021
Abstract Cylindrical vector beams (CVBs), being a special kind of with spatially variant states polarizations, are promising in photonics applications, including high-resolution imaging, plasmon excitation, optical trapping, and laser machining. Recently, generating CVBs using metasurfaces has drawn enormous interest owing to their highly designable, multifunctional, integratable features. However, related studies remain unexplored the terahertz regime. Here, generic method for efficiently...
A terahertz (THz) metamaterial biosensor based on four identical resonators is experimentally demonstrated, and high sensitivity achieved by exciting synchronous inductor-capacitor oscillations in a unit cell. The effect of geometries the resonance frequency sensor investigated using finite integration time domain method, simulated 85 GHz per refractive index unit. sample fabricated surface micromachining process characterized THz spectroscopy system combined with bovine serum albumin (BSA)...
Integrating multiple functionalities into a single device is striking field in metasurfaces. One promising aspect polarization-dependent meta-devices enabled by simultaneous phase control over orthogonally polarized waves. Among these, Pancharatnam-Berry (PB) metasurfaces have drawn enormous interest owing to their natural and robust ability different circularly However, the responses are locked be opposite with each other, resulting interrelated under incidence. Here, generic designing...
A dynamically tunable terahertz (THz) narrowband metamaterial absorber is presented. The based on an electrostatically actuated micro-electro-mechanical systems (MEMS) cantilever and split ring resonator (SRR) array. An equivalent LC circuit model for a transverse electric (TE) polarization wave introduced to analyze the mechanism of frequency tuning. finite element method applied simulate mechanical characteristics cantilever, integration technique used study tuning properties absorber....
In this paper, we present a novel universal coupled theory for metamaterial Bound states in the continuum (BIC) or quasi-Bound (quasi-BIC) which provides ultra-high Q resonance devices. Our analytically calculates coupling of two bright modes with phase. method has much more accuracy ultra-strong comparing previous (the one mode and dark mode). Therefore, our is suitable BIC quasi-BIC can accurately predict transmission spectrum first time.
Abstract Chirality prevails in nature and is of great value for molecular biology, medicine, bioscience. Due to the enhancement chiroptical responses, chiral metasurfaces has attracted enormous attentions. In this paper, some novel polarization-sensitive transmission effects terahertz are exhibited. whose unit cell consists two basic resonators – a wire split ring resonator (SRR), we observe asymmetrical circularly polarized state from circular cross-polarization conversion spectra dichroism...
In this paper, we present a Bound states in the continuum (BIC) metamaterial heterogeneous structures based on coupled mode theory. We find more general physical parameters to represent BIC, which are resonant frequencies and corresponding phases of structures. Therefore, BIC comes from equal value not only for homogeneous Meanwhile, if one structure's frequency phase vary by varying geometry, can obtain quasi-BIC instead broken symmetry provide with example two cut wire (CW) Split-Ring...
We demonstrate an electrically triggered tunable terahertz (THz) band-pass filter based on vanadium dioxide (VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> ) embedded hybrid metamaterials. The unit cell of the consists two cross resonators and a central bar. phase transition VO is induced by ohmic heating transmission can be modulated applied currents. mechanism tunability that conductivity film changes with relation between upper...
Abstract The Lorenz energy cycle is widely used to investigate atmospheres and climates on planets. However, the long-term temporal variations of such an have not yet been explored. Here we use three independent meteorological data sets from modern satellite era, examine characteristics Earth’s global atmosphere in response climate change. total mechanical basically remains constant with time, but global-average eddy energies show significant positive trends. spatial investigations suggest...
We experimentally demonstrate a dynamically tunable terahertz (THz) metamaterial absorber based on an electrostatic microelectromechanical systems (MEMS) actuator and electrical dipole resonator array. The absorption of the THz wave is mainly result resonance, which shows performance demand. By preforming finite integral technique, we discovered that central frequency amplitude can be simultaneously tuned by applied voltage U. Characterized white light interferometer time domain spectroscopy...
A terahertz (THz) metamaterial biosensor is proposed to measure the thermal induced denaturation temperature of insulin, a typical protein. The unit cell consists H-shaped metal structure enclosed by U-shaped on 500-μm-thick high resistance silicon substrate. THz has sensitivity 85 GHz/RIU (Refractive Index Unit). sample fabricated using surface micromachining process and characterized time-domain spectroscopy (TDS) system, insulin solution as analyte. Experimental results show that sensor...
Abstract In this paper, we apply the deep learning network to inverse engineering of electromagnetically induced transparency (EIT) in terahertz metamaterial. We take three specific points EIT spectrum with six inputs (each point has two physical values frequency and amplitude) into model predict inversely design geometrical parameters metamaterials. propose algorithm for general metamaterials, demonstrate that our method is functional by taking one example structure. Our exhibits a mean...
In this paper, an active dual-control electromagnetically induced transparency (EIT) analog is realized by using vanadium dioxide (VO2) metasurface on a sapphire substrate. The unit cell of the composite-split-ring-resonator (CSRR) composed two resonators, one which containing gold pattern and VO2 named as VSRR other T-type resonators called TTR. resonant frequency that TTR are located at 0.43 0.75 THz, respectively. While, CSRR have frequencies 0.39 0.72 EIT-like band has central 0.56 THz....
This paper proposes a unified detection strategy against three kinds of attacks for multi-agent systems (MASs) which is applicable to both transient and steady stages. For on the communication layer, watermarking-based scheme with KullbackLeibler (KL) divergence designed. Different from traditional schemes, each agent transmits message set containing two state values different types watermarking. It found that performance determined by relevant parameters watermarking signal. Unlike existing...
As a typical problem of Spatiotemporal Resource Management, Time Series Supplier Allocation (TSSA) poses complex NP-hard challenge, aimed at refining future order dispatching strategies to satisfy the trade-off between demands and maximum supply. The Black-Litterman (BL) model, which comes from financial portfolio management, offers new perspective for TSSA by balancing expected returns against insufficient supply risks. However, BL model is not only constrained manually constructed matrices...
Abstract The non‐radiative recombination loss at the interface is a huge obstacle to improving photovoltaic performance of perovskite solar cells (PSCs), especially carbon‐based PSCs (C‐PSCs). Here, we propose strategy for synergistic regulation defects and carrier transport through functional groups long‐chain ammonium salt molecules form 2D passivation layers by surface treatment with 5‐aminovalerate hydroiodide (5‐AVAI). results indicate that carboxyl group (–COOH) in 5‐AVAI can...
In this paper, we utilize coupled mode theory (CMT) to model the coupling of surface plasmon polaritons (SPPs) between tri-layered corrugated thin films (CTF) structure coupler in terahertz region. Employing stimulated raman adiabatic passage (STIRAP) quantum control technique, propose a novel directional based on SPPs evolution CTF some curved configuration. Our calculated results show that can be completely transferred from input output waveguides, and even consider propagation loss,...
Self-powered photodetectors (PDs) with inorganic lead halide perovskites hold multiple traits of high sensitivity, fast response, independence from external power supply, and excellent sustainability stability, thus holding a great promise for practical applications. However, they generally contain high-temperature-processed electron-transporting layers (ETLs) high-cost, unstable hole-transporting (HTLs) coupled noble metal electrodes, which bring significant obstacles production cost...