A5070078212- Metamaterials and Metasurfaces Applications
- Acoustic Wave Phenomena Research
- Aerodynamics and Acoustics in Jet Flows
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Power Systems and Renewable Energy
- Spectroscopy and Laser Applications
- Advanced Fiber Laser Technologies
- Topological Materials and Phenomena
- Simulation and Modeling Applications
- Acoustic Wave Resonator Technologies
- Image Processing Techniques and Applications
- Speech and Audio Processing
- Microwave Engineering and Waveguides
- Advanced Measurement and Detection Methods
- Analytical Chemistry and Sensors
- Advanced Sensor and Control Systems
- Advanced Semiconductor Detectors and Materials
- Optical Network Technologies
- Smart Grid and Power Systems
- Photonic Crystals and Applications
- Fern and Epiphyte Biology
- Fault Detection and Control Systems
- Educational Technology and Pedagogy
- Advanced Mathematical Modeling in Engineering
Jiangsu University
2019-2025
Shandong Academy of Sciences
2019
Qilu University of Technology
2019
Laser Research Institute
2019
State Key Laboratory of Optoelectronic Materials and Technology
2018
Commercial Aircraft Corporation of China (China)
2018
Sun Yat-sen University
2018
Huawei Technologies (China)
2016
Northeastern University
2016
Princeton University
2013-2015
For the classification of topological phases matter, an important consideration is whether a system spinless or spinful, as these two classes have distinct symmetry algebra that gives rise to fundamentally different phases. However, only recently has it been realized theoretically in presence gauge symmetry, algebraic structure symmetries can be projectively represented, which possibly enables switch between and spinful Here, we report experimental demonstration this idea by realizing...
Abstract Measurement of NO and/or its metabolites in the various body compartments has transformed our understanding biology. The inability current measurement methods to account for naturally occurring and experimental isotopes, however, prevented scientific community from fully understating metabolism vivo. Here we present a mid-IR Faraday rotation spectrometer (FRS) detection isotopes. instrument utilizes novel dual modulation/demodulation (DM) FRS method which exhibits noise performance...
Abstract Metagratings have provided great flexibility for controlling wave propagation by suppressing or enhancing diffraction of periodic unit cells supercells with high efficiency. On the other hand, to achieve complex wavefront, modulations usually require phase profiles metagratings be arbitrary. However, due lack a general theoretical framework, such high‐efficiency aperiodic remain elusive in reality. Here, class based on extension Snell's law that involves both and modulation...
Abstract Pseudospin‐dependent acoustic topological insulators (ATIs) with high‐robustness edge states have recently attracted as surge of interest owing to their potential applications, such one‐way sound transport and communications. Despite the rapid development pseudospin‐dependent ATIs, most existing efforts are limited monolayer, restricting degree freedoms achieve novel physical phenomena device applications. Here, a series ATIs composed dual‐layer honeycomb‐lattice sonic crystals is...
This paper reports on the first hologram in transmission mode based a c-Si metasurface visible range. The shows high fidelity and efficiency, with measured diffraction efficiencies of ~65% ~40%, respectively. Although originally designed to achieve full phase control range [0-2π] at 532 nm, these holograms have also performed well 444.9 nm 635 nm. tolerance both fabrication wavelength variations demonstrate that metasurfaces are quite attractive for diffractive optics applications,...
Acoustic asymmetric focusing (AAF) has a great potential application in medical ultrasound imaging, focused therapy, and nondestructive testing. The advancement of acoustic metamaterials metasurfaces provided various mechanisms to design AAF lenses. However, due the existence certain difficulty realizing sound transmission simultaneously, realization lens with broad bandwidth an integrative planar structure still remains challenge. Here, we theoretically propose experimentally demonstrate...
We theoretically derive three-dimensional (3D) generalized Snell's law which is demonstrated by reflected wavefront manipulations based on ultrathin quasi-3D acoustic metasurfaces. Acoustic metasurfaces with a deep subwavelength thickness of λ/10 are constructed 16 unit cells composed straight pipe and two ring-like Helmholtz resonators. Based the 3D law, many fascinating in space realized separately, including anomalous reflections, point focusing, line focusing perpendicular directions,...
The recent rapid development of acoustic logic devices has opened up the possibilities sound computing and information processing. However, simultaneous realization with subwavelength size, broad bandwidth passive structure still poses a great challenge. To overcome it, we propose gate which consists binary-phase unit cells placed into multi-port waveguide. Based on phase manipulations cells, experimentally numerically realize three basic gates OR, NOT AND, composite XOR uniform threshold...
A 120-GBd polarization multiplexed NRZ (PMNRZ) signal is generated using a monolithic double side electroabsorption modulated distributed feedback (DFB) laser. Using pre-amplified direct detection receiver and faster than Nyquist technique, the optical sensitivities of -18.3 -13.5 dBm are obtained for 240-Gb/s (a net data rate 200 Gb/s with 20% soft-decision forward error correction) PM-NRZ at back-to-back after 2-km transmission, respectively. To best our knowledge, this highest baud...
Acoustic metagratings (AMs) have provided diverse routes for sound modulations based on high-efficiency diffractions created by periodic supercell structures. The emergence of the extension generalized Snell's law (GSL), covering both acoustic and phase modulations, has promoted design AMs with aperiodic profiles, which a great potential in designing high-performance multifunctional devices. However, realization reflected its associated devices remain challenge. To overcome this, we here...
We have developed a transportable spectroscopic nitrogen isotopic analyzer. The spectrometer is based on dual-modulation Faraday rotation spectroscopy of nitric oxide isotopologues with near shot-noise limited performance and baseline-free operation. Noise analysis indicates minor isotope (15NO) detection sensitivity 0.36 ppbv·Hz−1/2, corresponding to noise-equivalent angle (NEA) 1.31 × 10−8 rad·Hz−1/2 absorbance (αL)min 6.27 Hz−1/2. White-noise at 2.8× the limit observed up ~1000 s,...
Asymmetric acoustic manipulations (AAMs) attract increasing attention for applications in integrated and architectural acoustics. However, because a planar phased array system has the same phase distribution on both sides, designing monolayer device with asymmetric modulation is real challenge. This work experimentally realizes four types of prisms different AAM effects arising from distributions, created by exit interfaces either side prism. With broad bandwidth, multifunctional AAMs,...
Two modified bacterial celluloses, xanthate-modified cellulose (XMBC) and sulfate-modified (SMBC), were prepared from (BC) esterified with xanthate sulfate, respectively, using microwave irradiation. The as-prepared samples characterized by X-ray diffraction (XRD), scanning electron microscopy-energy-dispersive spectroscopy (SEM-EDS), Fourier transform infrared (FT-IR) spectroscopy, Brunauer-Emmett-Teller (BET) surface analysis. Batch experiments carried out to determine the ability of XMBC...
Vortex beams have a typical characteristic of orbital angular momentum, which provides new degree freedom for information processing in remote communication and form non-contact manipulation trapping particles. In acoustics, vortex are generally observed on the surface metamaterial structure or waveguide with hard boundary owing to easy diffusion free space. The realization an acoustic beam long-distance propagation space still remains challenge. To overcome this, we report type Bessel (ABV)...
Recently, acoustic vortices with orbital angular momentum (OAM) have attracted great attention and interest owing to their extensive applications. Based on the generalized Snell’s law (GSL), vortex beams can be observed by constructing different types of metasurfaces immersed into cylindrical waveguides. However, restrictions phase gradient metasurface structures critical order propagating beams, there exist challenges in realizing complex modulation designing advanced multifunctional sound...
Up to 14-ns delay is achieved by the SBS slow light in a 25-m long high nonlinearity photonic crystal fiber. The efficiency improves control rate of systems.
A transportable quantum cascade laser based breath analyzer using dual-modulation Faraday rotation spectroscopy for detection of nitric oxide isotopes is reported. Sensitivities 0.49 ppbv/Hz1/2 15NO and 3.59 14NO have been achieved.
Acoustic asymmetric focusing (AAF) has attracted widespread attention owing to its great potential in medical ultrasound. The recent development of acoustic metamaterials and metasurfaces provided various concepts achieve AAF systems. Generally, the previously demonstrated lenses were limited one-dimensional structures, leading difficulties practical applications. realization three-dimensional (3D) space based on a two-dimensional (2D) device still remains challenge. Here, we experimentally...
The predecessor of China Optics was and Applied Digest, which founded in 1985. At that time, it the only retrieval journal field optics China. end 2008, Digest renamed