A5061336185- Photonic and Optical Devices
- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Advanced Fiber Optic Sensors
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- High voltage insulation and dielectric phenomena
- Optical Coatings and Gratings
- Advanced Sensor and Energy Harvesting Materials
- Underwater Acoustics Research
- Tactile and Sensory Interactions
- Surface Modification and Superhydrophobicity
- Aerodynamics and Acoustics in Jet Flows
- Photonic Crystal and Fiber Optics
- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Metal Alloys Wear and Properties
- Solar-Powered Water Purification Methods
- Optical Network Technologies
- Manufacturing Process and Optimization
- Noise Effects and Management
- Flow Measurement and Analysis
- Fiber-reinforced polymer composites
- Advanced Fiber Laser Technologies
- Solar Thermal and Photovoltaic Systems
Tianjin University
2007-2024
Harbin Engineering University
2021-2024
Wuyi University
2023-2024
Hainan University
2023
China Electric Power Research Institute
2020-2022
North China Electric Power University
2020-2022
Ministry of Industry and Information Technology
2021
University of Maryland, College Park
2013-2019
Oklahoma State University
2003-2013
Nankai University
2012
Spatial modulation of sound velocity below the wavelength scale can introduce strong frequency-dependent acoustic responses in tailored composite materials, regardless fact that most natural bulk materials have negligible dispersions. Here, for first time, we experimentally demonstrate a metamaterial traps broadband waves and spatially separates different frequency components, as result dispersion wave control by designed gradient subwavelength structures. The trapping positions be predicted...
The recent development of wearable devices is revolutionizing the way human-machine interaction (HMI). Nowadays, an interactive interface that carries more embedded information desired to fulfill increasing demand in era Internet Things. However, present approach normally relies on sensor arrays for memory expansion, which inevitably brings concern wiring complexity, signal differentiation, power consumption, and miniaturization. Herein, a one-channel based self-powered HMI interface, uses...
A working-point trackable fiber-optic hydrophone with high acoustic resolution is proposed and experimentally demonstrated. The sensor based on a polydimethylsiloxane (PDMS) cavity molded at the end of single-mode fiber, acting as low-finesse Fabry-Perot (FP) interferometer. working point tracking achieved by using low cost white-light interferometric system simple tunable FP filter. By real-time adjusting optical path difference filter, can be kept its highest sensitivity point. This helps...
In this paper we explore the existence of electromagnetic surface bound modes on a perfect metal wire milled with arrays subwavelength grooves. The are axially symmetric transverse magnetic (TM) waves and have same polarization state dominant propagating plasmon polaritons real wires. dispersion fundamental mode has close resemblance polaritons. Moreover, note that for TM metallic structure can be equivalent to dielectric coated defined geometrical parameters effective refractive index...
Dietary flavonoids catechin, epicatechin, eriodictyol, and hesperetin were investigated as substrates inhibitors of human sulfotransferases (hSULTs). Purified recombinant proteins intestine cytosol used enzyme sources.hSULT1A1 hSULT1A3 well can catalyse the sulfation flavonoids.Sulfation by hSULTs showed substrate inhibition at high flavonoid concentrations.Hesperetin eriodictyol are potent purified hSULT1A1, hSULT1A3, hSULT1E1, hSULT2A1. Catechin epicatechin inhibited hSULT1A1 but not...
We demonstrate a novel miniature multi-parameter sensing device based on plasmonic interferometer fabricated fiber facet in the optical communication wavelength range. This enables coupling between surface plasmon resonance and interference structure, which are two essential mechanisms for sensing. experimentally show that these have distinctive responses to temperature refractive index, rendering capability of simultaneous index measurement an ultra-miniature form factor. A high sensitivity...
We investigate the resonant properties of high quality-factor membrane-based metamaterial resonators functioning in terahertz regime. A number factors, including resonator geometry, dielectric loss, and most importantly membrane thickness are found to extensively influence resonance strength quality factor sharp resonance. Further studies on thickness-dependent-sensitivity for sensing applications reveal that metamaterials with a moderate ranging from 10 50 μm promising option towards...
Graphene has been known to possess exceptional mechanical properties, including its extremely high Young's modulus and atomic layer thickness. Although there are several reported fiber optic pressure sensors using graphene film, a key question that is not well understood how the suspended film interacts with backing air cavity affects sensor performance. Based on our previous analytical model, we will show performance suffers due significantly reduced sensitivity by cavity. To remedy this...
Bio-robot equipped with tactile sensors can simulate humans to sense surface characteristic information of an object, but acquiring subsurface from materials remains challenging. Here, we introduce a smart bionic finger tomography capability. This is integrated feedback system, which allows the respond force quantitatively. A series thresholds corresponding forces are set up for generate layer-by-layer slice images material. These reveal and reproduce internal structure soft layer. further...
Due to limitations of conventional acoustic probes, full spatial field mapping (both internal and external wave amplitude phase measurements) in metamaterials with deep subwavelength structures has not yet been demonstrated. Therefore, many fundamental propagation phenomena remain experimentally unexplored. In this work, we realized a miniature fiber optic point detector that is capable omnidirectional detection complex fields various metamaterial over broadband spectrum. By using probe,...
We show that light trapping and releasing can be switched by a mechanic tuning effect in metamaterial waveguides. The transition mechanism between the states relies on synergetic of local Bragg reflection cavity resonance As proof-of-concept demonstration, heterostructured waveguide comprised dielectric claddings tapered core formed arrays metal slats is analytically numerically investigated. spatial separation trapped with various frequencies predicted "rainbow equation." proposed scheme...
We investigate the unexplored physics of slow light effect in resonance induced transparent grating waveguide structures. show that with a simple three-layer thin-film structure, narrow window can be obtained, enabling substantially down speed out-of-plane propagation light. Further, we numerically demonstrate an active device potentially achieves high-speed control at optical communication band. This work paves way for design functional devices, such as slow-light chips, switches, and...
A planar photonic crystal (PPC) structure capable of simultaneous detection multiple parameters is presented in this paper. We analytically and numerically demonstrate that the reflection spectrum PPC exhibits high-Q resonant modes could respond distinctively to different external perturbations, rendering sensor superior capabilities for multiparameter sensing. further pressure temperature sensing with a sensor. Other advantages device include efficient free-space-to-multimode coupling, high...
A detailed investigation was carried out on the effect of austenisation temperature phase transformation in X65 microalloyed pipeline steel during continuous cooling at a rate 200°C min−1 by means high resolution dilatometric measurement and microstructure observation. The results showed that with increasing range 850–1000°C, shifts to lower temperatures formation acicular ferrite is promoted. Furthermore, increase refined grains after room temperature, associating appearance structure...
We propose and demonstrate a low-cost simple fiber optic cantilever accelerometer with spherical tip based on Gaussian beam focusing. The consists of ceramic ferrule, sleeve, receiving emitting fiber, where both fibers are single mode the ferrule sleeve have characteristics high precision, which reduce difficulty optical alignment. end is made into for focusing to improve sensitivity. When in operation, acts as beam, acceleration can be measured by detecting transmission power. Further, our...
The recent development of wearable devices is revolutionizing the way human-machine interaction (HMI). Nowadays, an interactive interface that carries more embedded information desired to fulfil increasing demand in era Internet Things. However, present approach normally relies on sensor arrays for memory expansion, which inevitably brings concern wiring complexity, signal differentiation, power consumption, and miniaturization. Herein, a one-channel based self-powered HMI interface, uses...
The transformation characteristics of low-carbon high strength low alloy steel for various cooling rates were systematically investigated by means dilatometric measurements and microstructure observations. According to the results, it is recognised that increase rate could lead evolution from a mixture polygonal ferrite, acicular ferrite bainite dual phase ferrite. kinetics mechanism was further studied modified analytical model, which involves site saturation, diffusion/interface-controlled...