Xiaohui Liu

ORCID: 0000-0003-4827-728X
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Research Areas
  • Advanced Fiber Optic Sensors
  • Photonic and Optical Devices
  • Geophysics and Sensor Technology
  • Semiconductor Lasers and Optical Devices
  • Multilevel Inverters and Converters
  • Silicon Carbide Semiconductor Technologies
  • Ultra-Wideband Communications Technology
  • Perovskite Materials and Applications
  • Full-Duplex Wireless Communications
  • Antenna Design and Analysis
  • High-Voltage Power Transmission Systems
  • HVDC Systems and Fault Protection
  • Conducting polymers and applications
  • CCD and CMOS Imaging Sensors
  • Microwave Engineering and Waveguides
  • Quantum Dots Synthesis And Properties
  • Advanced Sensor and Control Systems
  • Quantum Information and Cryptography
  • Advanced DC-DC Converters
  • Power Systems and Technologies
  • Seismic Waves and Analysis
  • Millimeter-Wave Propagation and Modeling
  • Photonic Crystal and Fiber Optics
  • Quantum Mechanics and Applications
  • Neural Networks Stability and Synchronization

National University of Defense Technology
2024

Ningbo University
2021-2024

State Grid Corporation of China (China)
2023

China Electric Equipment Group (China)
2023

NARI Group (China)
2021

Hefei University of Technology
2019-2020

Tianjin University
2020

University of Electronic Science and Technology of China
2018-2019

Shandong Academy of Sciences
2008-2018

Qilu University of Technology
2018

Gold immunochromatographic strip assay provides a rapid, simple, single-copy and on-site way to detect the presence or absence of target analyte.This paper aims develop method for accurately segmenting test line control gold (GICS) image quantitatively determining trace concentrations in specimen, which can lead more functional information than traditional qualitative semi-quantitative assay.The canny operator as well mathematical morphology is used extract GICS reading-window.Then,...

10.1109/tmi.2014.2305394 article EN IEEE Transactions on Medical Imaging 2014-02-07

Abstract The pursuit of high power conversion efficiency (PCE) and cost‐effective perovskite solar cells (PSCs) has spawned many innovative device structure designs. Compared with the traditional NIP type PSCs, electron transport layer (ETL) free PSCs have attracted growing attention due to their enormous potential in large area, low‐cost flexible application. However, there is still a lack in‐depth understanding energy level arrangement indium tin oxide (ITO)/perovskite interface, resulting...

10.1002/aenm.202102724 article EN Advanced Energy Materials 2021-11-07

This article is concerned with a new distributed state estimation problem for class of dynamical systems in sensor networks. The target plant described by set differential equations disturbed Brownian motion and randomly occurring nonlinearities (RONs) subject to time delays. RONs are investigated here reflect network-induced regulation the delayed states on current ones. Through available measurement output transmitted from sensors, estimator designed estimate system, where each can...

10.1145/2379799.2379803 article EN ACM Transactions on Sensor Networks 2012-11-01

Abstract Mixed tin‐lead perovskite solar cells (PSCs) have garnered much attention for their ideal bandgap and high environmental research value. However, poly (3,4‐ethylenedioxythiophene): (styrene sulfonate) (PEDOT: PSS), widely used as a hole transport layer (HTL) Sn‐Pb PSCs, results in unsatisfactory power conversion efficiency (PCE) long‐term stability of PSCs due to its acidity moisture absorption. A synergistic strategy by incorporating histidine (HIS) into the PEDOT: PSS HTL is...

10.1002/smll.202400934 article EN Small 2024-09-09

We investigate and compare the φ-optical time domain reflectometry (OTDR) OTDR-interferometry methods, both using phase demodulation, for distributed acoustic sensing. By theoretical analysis experiments we show that, while φ-OTDR give proper instantaneous amplitude, frequency, properties of signal, produces larger signals offers higher sensitivity, better signal-to-noise-ratio, demodulated signal width than due to introduction interferometer. This work enables selection method sensing...

10.1109/jsen.2017.2785358 article EN IEEE Sensors Journal 2017-12-20

SiC devices can upgrade the inverter performance to a new level by its potentially more than ten times higher switching speed compared Si counterpart. However, high frequency and dv/dt, di/dt worsen electromagnetic interference. Reduction of common mode (CM) noise non-isolated photovoltaic (PV) inverters is addressed many researchers through adding filters or balancing circuit. most methods rely on certainty parasitics in system advance. It usually not practical for PV because parasitic...

10.1109/tpel.2019.2956771 article EN IEEE Transactions on Power Electronics 2019-11-29

The increased switching frequency and speed of silicon carbide (SiC) MOSFETs lead to higher power density inverters, but meanwhile resulting in weak electromagnetic interference (EMI). impedance balance technique is a good way reduce the common mode (CM) noise by making voltage across line stabilization network (LISN) as small possible. However, side effect this generation relatively large loop current that circulates inverter. It can cause additional losses cost, which be factor stops...

10.1109/jestpe.2020.3043018 article EN IEEE Journal of Emerging and Selected Topics in Power Electronics 2020-12-07

Objectives . Hua-Zheng-Hui-Sheng-Dan (HZHSD) was used as an experimental model to explore research methods of large formulae in traditional Chinese medicine (TCM) using current molecular biology approaches. Materials and Methods The trypan blue exclusion assay determine cell viability numbers. Flow cytometry assess cycle distribution apoptosis. concentration cyclin D1 analyzed by enzyme-linked immunosorbent assay. median effect principle drug combination studies. An orthogonal design...

10.1155/2015/436807 article EN Evidence-based Complementary and Alternative Medicine 2015-01-01

One of the most important structures in dermoscopy images is pigment network, which also one challenging and fundamental task for dermatologists early detection melanoma. This paper presents an automatic system to detect network from images. The design proposed algorithm consists four stages. First, a pre-processing carried out order remove noise improve quality image. Second, bank directional filters morphological connected component analysis are applied networks. Third, features extracted...

10.1088/1742-6596/787/1/012033 article EN Journal of Physics Conference Series 2017-02-01

A new multiple access scheme, Waveform Division Multiple Access (WDMA) based on the orthogonal wavelet function, is presented. After studying correlation properties of different categories single functions, one with best property will be chosen as foundation for combined waveform. In communication system, each user assigned to Demonstrated by simulation, waveform more suitable than function a medium in WDMA system. Due excellent orthogonality, bit error rate (BER) multiuser waveforms so...

10.1155/2014/171875 article EN cc-by The Scientific World JOURNAL 2014-01-01

A quasi-distributed acoustic sensing (QDAS) scheme based on identical low-reflective fiber Bragg grating is proposed and analyzed theoretically experimentally. We realize the demodulation of different location frequency simultaneously by using imbalanced Michelson interferometer φ-OTDR Phase Generated Carrier technology with 600 gratings(FBGs) written on-line during drawing ordinary signal mode fibers in an equal separation 2 m. further obtain 1.4 dB response flatness at range 200 Hz–1500 Hz...

10.1088/1361-6501/28/1/015202 article EN Measurement Science and Technology 2016-12-01

The identification of electronic processes at the charge-selective contact buried interface is very important for photovoltaic research. main loss perovskite solar cell (PeSCs) generally bound up with its charge transfer layer. Especially, current record highest power conversion efficiency quasi-two-dimensional (quasi-2D) PeSCs achieved by inverted device configurations, compared upright structures. This study investigated, carrier recombination and extraction in quasi-2D leveraging scanning...

10.1088/1361-648x/acda71 article EN Journal of Physics Condensed Matter 2023-05-31

A converter valve is the core equipment of HVDC transmission system, whose operating temperature threshold strictly constrained. This paper proposes a novel prediction method for outlet water based on F-BP network, which aims to accurately predict and assists operation maintenance personnel take measures in time so that will not exceed its preset when condition has changed. Firstly, principle construction typical databases stated, including data standardization, calculation optimal...

10.1016/j.egyr.2023.05.142 article EN cc-by-nc-nd Energy Reports 2023-06-06

In this paper, we consider the robust finite-horizon filter design problem for a class of discrete time varying systems with both stochastic nonlinearities and deterministic uncertainties. The description is quite general, which comprises state-multiplicative noises random sequences whose powers depend on either sector-bound nonlinear function state or sign state. norm bounded parameter uncertainties are allowed to enter system output matrices. We aim that guarantees an optimized upper bound...

10.1109/icarcv.2004.1468799 article EN 2005-07-27

This paper studies the Rake receiver for direct sequence ultra-wideband (DS-UWB) system. SRake and PRake are employed to receive UWB signal in indoor dense multi-path channel (IEEE P802.15.TG3a). In order study how improve performance of receivers, different Gaussian pulses discussed firstly. And then, ML estimation algorithm is used get timing delay weighted value receiver. The effect influenced by assisted-pilot numbers with SNR. Finally, influence branch given. simulation results show...

10.1109/comcomap.2014.7017174 article EN 2014-10-01

Based on the classical time division multi-channel communication theory, we present a scheme of quantum time-division (QTDMC). Moreover, model switch (QTDS) and correlative protocol QTDMC are proposed. The bit error rate (QBER) is analyzed QBER simulation test performed. shows that QTDS can carry out multi-user through channel, also reach reliability requirement communication, has high practicability transplantable. may play an important role in establishment large scale future.

10.1088/0256-307x/27/12/120303 article EN Chinese Physics Letters 2010-12-01

In this paper, a compact reconfigurable diplexer with the wideband tuning operation and high isolation is presented. Two pairs of half-wavelength (λ/2) resonators loaded stepped-impedance open-stubs (SIOSs) are used to allocate resonances. Meanwhile, passband selectivity improved due intrinsic transmission zero generated by SIOSs. varactors embedded between resonator SIOSs utilized for operation. To further improve configuration passband, straight- ring-slots under I/O ports introduced....

10.1109/ieee-iws.2018.8400815 article EN 2018 IEEE MTT-S International Wireless Symposium (IWS) 2018-05-01
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