A5100671620- Solid State Laser Technologies
- Photorefractive and Nonlinear Optics
- Advanced MEMS and NEMS Technologies
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Acoustic Wave Resonator Technologies
- Luminescence Properties of Advanced Materials
- Energy Load and Power Forecasting
- Photonic Crystals and Applications
- Plasma Diagnostics and Applications
- Biocrusts and Microbial Ecology
- Photonic Crystal and Fiber Optics
- Optical Network Technologies
- Electronic Packaging and Soldering Technologies
- Perovskite Materials and Applications
- Advanced Fiber Optic Sensors
- Smart Grid Energy Management
- Advanced materials and composites
- Advanced Surface Polishing Techniques
- Smart Grid Security and Resilience
- Evolutionary Game Theory and Cooperation
- Nanowire Synthesis and Applications
- Evolutionary Psychology and Human Behavior
- Advanced Technologies in Various Fields
- Diatoms and Algae Research
Xi'an Technological University
2024
Harbin Institute of Technology
2011-2024
Sichuan University
2023
Dalian Maritime University
2022
Southern University of Science and Technology
2021
ORCID
2021
Aerospace Information Research Institute
2021
Northwestern Polytechnical University
2020
Academy of Opto-Electronics
2014-2017
Qingdao University
2013-2015
In this work, dual-core antiresonant hollow core fibers (AR-HCFs) are numerically demonstrated, based on our knowledge, for the first time. Two fiber structures proposed. One is a composite of two single-core nested nodeless AR-HCFs, exhibiting low confinement loss and circular mode profile in each core. The other has relatively simple structure, with whole elliptical outer jacket, presenting uniform wide transmission band. modal couplings AR-HCFs rely unique mechanism that transfers power...
This paper describes a high-resolution silicon-on-glass <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">z</i> axis gyroscope operating at atmospheric pressure. The mechanical structure is designed in such way that it exhibits low cross coupling between drive and sense mode of less than 0.5% simulated using finite-element method 1.35% verified by experimental measurements. Due to symmetrically structure, the specified bandwidth can be maintained...
An Yb : YVO4 single crysal with good optical quality and large size has been grown by the Czochralski method. We have discussed growth shape of crystal which is composed {100} {101} simple forms. The data thermal expansion specific heat measured. coefficients along a- c-axis directions are α1 = 1.5 × 10—6/K α3 8.2 10—6/K, respectively. 30.4 cal/mol K at 320 K. absorption fluorescence spectra
There have been huge achievements of all‐perovskite tandem solar cells, which recently realized the highest power conversion efficiency 24.8%. However, complex device structure and complicated manufacture processes severely restrict further development cells. In this work, we successfully fabricated high‐efficiency hole transport material‐free (HTM‐free) Sn−Pb alloyed narrow bandgap perovskite cells (PSCs) by introducing guanidinium thiocyanate (GASCN) hydroiodic acid (HI) into precursor...
This paper describes an interface circuit design for monolithic CMOS-MEMS gyroscopes, based on a novel differential difference amplifier (DDA) with high gain, low temperature and process dependence, noise, power consumption. The DDA achieves 4 fF equivalent transcapacitance 0.01%/ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> C variation. DDA-based has been integrated z-axis gyroscope foundry CMOS chip. A 4.5 zF/√Hz input-referred...
An ultra-deep (40–120 µm) keyhole-free electrical isolation trench with an aspect ratio of more than 20:1 has been fabricated. The process combines DRIE (deep reactive ion etch), LPCVD insulating materials refilling and TMAH or KOH backside etching technologies. Employing multi-step optimized conditions a sacrificial polysilicon layer, the keyholes in trenches are prevented; as result mechanical strength reliability improved. Electrical tests show that such can electrically isolate MEMS...
We propose and numerically study a novel type of hollow core antiresonant fiber with single layer nodeless radially asymmetric cladding tubes, i.e., the tube presents bulb-like shape, that local curvature radius at core/cladding boundary is larger than other side. Compared counterparts conventionally used symmetric claddings, e.g., circular elliptical numerical analysis shows such structure can provide excellent broadband low-loss property robust single-mode guidance. By tuning radius,...
Abstract The precise, accurate and efficient short-term load forecasting can guide the power supply companies to rationally arrange dispatch plans, help improve stability of grid operation, significantly, improving utilization, thereby optimizing corporate marketing strategies increasing economic returns. Short-term methods based on deep learning have gained greater attention from academia companies. Among them, model recurrent neural network has excellent results compared with traditional...
In this paper, compression of high-power femtosecond pulses in Sagnac interferometers constructed anti-resonant hollow core fibers (ARHCF) is investigated numerically and experimentally. By varying the types pressures gas filled fiber, group velocity dispersion nonlinear pulse phase accumulation difference between clockwise counterclockwise propagations could be tuned conveniently. experiment, we demonstrate pedestal suppression temporal 800 nm, 160 fs, 10 μJ from a Ti: Sapphire laser at 1...
Bearing steel (GCr15) is widely used in key parts of mechanical transmission for its excellent properties. Electrochemical machining (ECM) a potential method GCr15, as the process electrochemical dissolution GCr15 regardless high hardness (>50 HRC). In ECM, NaNO3 solution popular electrolyte, it has ability to help nonlinear many metallic alloy materials, making useful precision machining. However, due carbon content unique, and there always black layer with roughness on machined surface,...
A novel single-chip bulk-micromachined integrated gyroscope was designed and fabricated in a compatible CMOS process. Using high aspect ratio (30:1) trench etching technology, deep electrical isolation materials refilling, backside technologies, bulk MEMS structures circuits (a part of preamplifier temperature sensor) were into single-crystal silicon wafer. Z-axis has been using this which is with the standard The device 3.5 mm by size 100 /spl mu/m thick proof mass. At atmosphere pressure,...
A novel comb capacitor, the fixed and movable fingers of which have different positions but same height, is proposed. The capacitor can be used to measure out-of-plane movement through differential method has low air damping. Using this kind a bulk micromachined y-axis gyroscope designed, whose structure doubly decoupled. fabricated by silicon/glass wafer bonding deep reactive ion etching process, in composite mask technique twice realize structure. process compatible with previous reported...
In this paper, a bulk micromachined z-axis single crystal silicon gyroscope is presented. The symmetrical and double decoupled structures can greatly suppress the mechanical coupling easily realize match of resonant frequencies between driving mode sensing mode. Finite element method (FEM) simulation shows that intercoupling less than 0.6% in orthogonal direction 0.1% parallel direction. Silicon on glass (SOG) process utilized to fabricate gyroscope, therefore large proof mass capacitance be...