A5081685151- Terahertz technology and applications
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Perovskite Materials and Applications
- Plasmonic and Surface Plasmon Research
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Microwave Engineering and Waveguides
- Photonic Crystals and Applications
- Advanced Fiber Optic Sensors
- Chalcogenide Semiconductor Thin Films
- Laser Material Processing Techniques
- Millimeter-Wave Propagation and Modeling
- Nanofabrication and Lithography Techniques
- Photonic Crystal and Fiber Optics
- Laser-induced spectroscopy and plasma
- Advanced Fiber Laser Technologies
- Spectroscopy and Laser Applications
- Advanced Antenna and Metasurface Technologies
- Topological Materials and Phenomena
- Laser-Matter Interactions and Applications
- Advanced Surface Polishing Techniques
- Nonlinear Optical Materials Studies
- Distributed Control Multi-Agent Systems
- Adaptive Control of Nonlinear Systems
Jiangsu University
2021-2025
Dalian Maritime University
2022-2024
Nankai University
2018-2023
University of Science and Technology of China
2023
Shanghai Institute of Technical Physics
2022
Nanyang Technological University
2021
Abstract The Dirac semimetal cadmium arsenide (Cd 3 As 2 ), a 3D electronic analog of graphene, has sparked renewed research interests for its novel topological phases and excellent optoelectronic properties. gapless nature band facilitates strong optical nonlinearity supports plasmons that are particular interest to realize high‐performance photonic devices at terahertz (1 THz = 4.1 meV) frequencies, where the performance most dynamic materials limited by tradeoff between power‐efficiency...
In this study, an optical setup for generating terahertz (THz) pulses through a two-color femtosecond laser filament was carefully designed to achieve precise overlap of in space and time. β-barium borate (BBO), α-BBO, dual-wavelength plate were used compensate the phase delay lasers. Tilting α-BBO could further realize spatial two beams by counteracting walk-off effect. The maximum output THz pulse energy reached 21 μJ argon gas when using commercial Ti:sapphire with 6 mJ at 1 kHz...
Quantum dots (QDs) have gained significant interest in optoelectronic devices due to their excellent properties. Single-QD materials limit the high performance of photodetectors (PDs). The PDs is enhanced by combining two dissimilar form a heterostructure. responsivity vis–NIR photodetector based on Ag2S/CsPbBr3 heterojunction presented this work. Using CsPbBr3 QDs as first absorption layer and Ag2S second layer, bipolar carrier transporting channel was built. This layered arrangement can...
Two-dimensional (2D) Ruddlesden–Popper perovskites have demonstrated significant potential in high-performance optoelectronic devices due to their exceptional properties and remarkable stability. However, research on photodetection 2D perovskite/PdSe2 nanosheet heterojunction structures remains limited. In this work, a stable photodetector with high responsivity based heterostructure of perovskite (PEA)2PbI4 PdSe2 nanosheets is demonstrated. The device performance reveals that photodetectors...
Abstract Optoelectronic logic gates (OELGs) are considered a promising alternative to traditional electronic gates, thanks their high computational speed and low power consumption. Meanwhile, there enormous challenges including complex structures single‐function. In this study, the optoelectronic gate device is prepared merely through single Cs 3 Bi 2 Br 9 photodetector. The bidirectional photoresponsive behavior of exhibited under bias voltages modulated by change current level. five...
Platinum diselenide (PtSe2) has been exploited for visible and infrared photodetectors due to its tunable electrical photoelectric properties determined by a layer-dependent band gap. We investigated the photoconductive mechanism of few-layer (3 nm) PtSe2 field-effect phototransistor (FEPT) under illumination lasers. The FEPT shows ambipolar characteristics modulated gate voltage with mobility 1496.7 cm2 v–1 s–1 (electron) 1410 (hole) at VDS = 0.16 V. Both positive photoconductivity (PPC)...
A silver nanoparticles (AgNPs)-integrated terahertz (THz) metasurface sensor was presented and applied to enhance the sensitivity of substance detection. Simulations experiments were conducted study influence AgNPs on performance. The enhancement local electric field excited by can substantially strengthen interaction between THz waves analytes, thereby increasing detection sensitivity. experimental results indicate that limit AgNPs-integrated is improved two orders magnitude compared bare...
Mode converters, crucial elements within photonic integrated circuits (PICs) designed for multimode optical transmission and switching systems, present a challenge due to their bulky structures in thin-film lithium niobate (TFLN) platforms, which are incompatible with the compact efficient nature desired dense PICs. In this work, we propose TE
Rapid fabricating and harnessing stimuli-responsive behaviors of microscale bio-compatible hydrogels are great interest to the emerging micro-mechanics, drug delivery, artificial scaffolds, nano-robotics, lab chips. Herein, we demonstrate a novel femtosecond laser additive manufacturing process with smart materials for soft interactive hydrogel micro-machines. Bio-compatible hyaluronic acid methacryloyl was polymerized hydrophilic diacrylate into an absorbent matrix under tight topological...
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, a strategy to specifically identify substances through correlating the substance fingerprint peak with resonant frequency shift of metamaterial sensors has been presented and demonstrated experimentally. Three different resonance frequencies were fabricated by ultrafast laser direct writing, they all have good sensing performance. Due matching degrees between sensor peak, shifts obtained. The better matches greater peak. On contrary, smaller will be Through method, correlation...
An ultrabroad and angle tunable terahertz filter based on multiplexed metallic bar resonators is designed, fabricated, characterized in this letter. We found that the bandwidth of could be greatly extended by configurations. When number gold bars a unit cell increases from 1 to 5, will broadened 0.13 1.20 THz. Besides, modulation depth can tuned rotating sample change between long axis THz polarization. deflection decreases 90° 0°, transmission 0.26. Therefore, structure provides feasible...
Abstract Two-dimensional (2D) Ruddlesden–Popper (RP) perovskite is an ideal platform for building high-performance photodetectors due to its unique structure, excellent stability, and tunable bandgap. However, 2D heterojunction are still less reported. In this work, the photodetector based on (PEA) 2 PbI 4 /P3HT was prepared by liquid-phase solution method under air conditions, which showed a responsivity (R) of 8.38 A W −1 specific detectivity (D*) 6.53 × 10 11 Jones 808 nm light. addition,...
High-Q resonances excited by bound states in a continuum (BIC) metamaterial have sparked increasing research interests for its prospective applications sensing, lasing, and nonlinear optical devices. This paper introduces quasi-BIC supported flexible terahertz (THz) sensor curvature measurement. The symmetry-protected BICs based on metallic rectangle structures thin polyimide substrate are designed. After introducing defect perturbations along the x y directions into rectangle, two...