A5076480212- Acoustic Wave Phenomena Research
- Metamaterials and Metasurfaces Applications
- Advanced Antenna and Metasurface Technologies
- Matrix Theory and Algorithms
- Tensor decomposition and applications
- Mathematical Dynamics and Fractals
- Microwave Engineering and Waveguides
- Optimization and Variational Analysis
- Speech and Audio Processing
- Aerodynamics and Acoustics in Jet Flows
- Elasticity and Material Modeling
- Underwater Acoustics Research
- Innovative Energy Harvesting Technologies
- Radio Frequency Integrated Circuit Design
- Optimal Power Flow Distribution
- Ocular and Laser Science Research
- Mathematical Approximation and Integration
- Smart Grid Security and Resilience
- Nonlinear Differential Equations Analysis
- Antenna Design and Analysis
- Virus-based gene therapy research
- Advanced Banach Space Theory
- Gyrotron and Vacuum Electronics Research
- Analytic and geometric function theory
- Xenotransplantation and immune response
University of Science and Technology of China
2021-2024
Hunan University
2018-2023
Guizhou Electromechanical Research and Design Institute
2021
University of Minnesota
2020
Anhui Polytechnic University
2019
Qufu Normal University
2018-2019
Genesis Foundation
2017
Yunnan University of Finance And Economics
2014
University of Chinese Academy of Sciences
2014
Wuhan Institute of Physics and Mathematics
2014
In this paper, we establish $Z$-eigenvalue inclusion theorems for general tensors, which reveal some crucial differences between $Z$-eigenvalues and $H$-eigenvalues. As an application, obtain upper bounds the largest of a weakly symmetric nonnegative tensor, are sharper than existing bounds.
A hybrid acoustic cloaking, composed of binary splitting metasurfaces (BSMs) and near-zero-index metamaterials (NZIMs), is proposed in this paper. The BSMs form cloaking to make the incident waves diffract around obstacle, while NZIMs can straightly transfer input layer control emergent from output propagate along original direction. Due tunneling effect, compensate for extra phase wave diffraction improve efficiency cloaking. As consist Helmholtz cavities cylinders, respectively, simple...
Acoustic metamaterials, capable of both sound insulation and energy harvesting, composed Helmholtz resonators built-in decorated membranes are proposed. It is theoretically experimentally proved that the proposed metamaterial can obtain two bands where also efficiently harvested at same frequency simultaneously. The peak output power reach up to 244 nW when incident pressure 1 Pa, which about 14 times larger than structures single membrane reported before with input. Moreover, considerable...
In this paper, by characterizing the ratio of smallest and largest values a Perron vector, we propose some Ostrowski-type bound estimations for spectral radius weakly irreducible nonnegative tensors which improve existing results. Based on Brualdi-type eigenvalue inclusion sets Gershgorin sets, establish new Ky Fan-type theorems tensors.
Embedded wireless sensing networks (WSNs) provide effective solutions for structural health monitoring (SHM), where how to long‐term electric power is a bottle‐neck problem. Piezoelectric vibration energy harvesting (PVEH) has been widely studied realize self‐powered WSNs due piezoelectric effect. Structural vibrations are usually variable and exist in the form of elastic waves, so cantilever‐like harvesters not appropriate. In this paper, one kind two‐dimensional (2D) metamaterial plates...
In this paper, we investigate some inequalities for the Fan product of M-tensors. We propose exact characterizations M-tensors and establish on minimum eigenvalue two Furthermore, inclusion relations among them are discussed. Numerical examples show validity conclusions.
Since passive anti-islanding detection have largely blind spots, easily fluctuation and so on shortcomings, moreover active frequency drift Some drawbacks too.For example distortion of current power injecting into grid associated with islanding detection.a based variable improved method is proposed.The technology acquired chopping fraction through adding offset.So as to achieve positive feedback voltage at the point common coupling in state realize function.Under normal circumstances...
Abstract Based on the optical system characteristics of coded aperture snapshot spectral imager (CASSI), an optimized shortwave infrared dual camera CASSI was designed based improved Offner-Wynne imaging spectrometer. The operating wavelength ranges from 900nm to 1700nm, and focal length is 1200mm. It consists two parts: dimensional multispectral system. key technical parameters parts are same there no visual axis difference. Therefore, can effectively improve real-time performance,...
Generating high sound-intensity plane waves typically requires transducer arrays with complex synchronizing systems and high-output amplifiers. This work proposes a simple combination device to convert fan-shaped into elevated sound-pressure waves. The proposed primarily relies on phase reconstruction of near-zero index metamaterials the superposition reflected in reverberation field. compact device, which is easy manufacture, consists short waveguide equipped two types converters. One...