A5100326207- Advanced Fiber Optic Sensors
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Perovskite Materials and Applications
- Photonic Crystal and Fiber Optics
- Semiconductor Lasers and Optical Devices
- Solid-state spectroscopy and crystallography
- Optical Systems and Laser Technology
- Optical properties and cooling technologies in crystalline materials
- Quantum Dots Synthesis And Properties
- Luminescence Properties of Advanced Materials
- Plasmonic and Surface Plasmon Research
- Optical Coherence Tomography Applications
- Advanced biosensing and bioanalysis techniques
- Surgical site infection prevention
- Advanced Measurement and Detection Methods
- Bacterial biofilms and quorum sensing
- Antimicrobial agents and applications
- Orthopedic Infections and Treatments
- Optical Network Technologies
- Advanced Nanomaterials in Catalysis
- Biosensors and Analytical Detection
- Organic Light-Emitting Diodes Research
- Terahertz technology and applications
- Magnetic Field Sensors Techniques
First Affiliated Hospital of Guangzhou University of Chinese Medicine
2025
Affiliated Hospital of Southwest Medical University
2024
Yangtze University
2024
Heilongjiang University
2021-2024
Changchun University of Technology
2023
Nankai University
2009-2023
Yangtze Optical Electronic (China)
2008-2023
University of Chinese Academy of Sciences
2013-2023
Changzhou University
2023
Harbin Institute of Technology
2023
We demonstrate a novel distributed acoustic sensing (DAS) system based on phase-sensitive optical time-domain reflectometry (Φ-OTDR). Both the phase and amplitude of Rayleigh scattering (RS) light can be demodulated in real-time. The technique is I/Q demodulation homodyne detection using 90° hybrid. theoretical analysis given, as proof concept, dynamic strain experimentally demonstrated, with range 12.566 km spatial resolution 10 m.
Abstract High‐performance IR organic photodetectors (OPDs) are of great significance for wireless optical communication, light detection and ranging (LiDAR) technology, wearable electronics. However, high dark current low responsivity ( R ) hinder their future commercial application. Herein, fullerene non‐fullerene acceptors‐based OPDs fabricated to understand the relationship between trap density photo‐responsivity. Impressively, system...
CsPbBr3/Cs4PbBr6 nanocomposites recently were found to yield efficient luminescence. However, the formation mechanism of is unclear, and large-scale green synthesis still challenging. Here, we develop a self-assembly reaction fabricate efficiently environmentally friendly. The transmission electron microscopy clearly shows CsPbBr3 nanocrystal embedded in Cs4PbBr6 matrix, forming composite structure. In situ characterization reveals that are formed by two-step reaction, driven ion...
Abstract Mesenchymal stem cell (MSC) is an absorbing candidate for therapy in treating spinal cord injury (SCI) due to its great potential multiple differentiation, mighty paracrine secretion as well vigorous immunomodulatory effect, of which are beneficial the improvement functional recovery post SCI. However, therapeutic effects MSC on SCI have been limited because gradual loss stemness process expanding culture. Therefore, this study, we aimed maintain those properties via...
Abstract Lead‐free double perovskite nanocrystals (NCs) are a promising alternative to lead‐based NCs for optoelectronic materials due their nontoxic and good moist‐thermal stability. However, most of the lead‐free exhibit unsatisfying photoluminescence quantum yield (PLQY); metal ions doping is an effective method improve optical properties. Here, monodisperse, homogeneous cubic morphology Na + ‐doped Cs 2 AgBiBr 6 prepared via colloidal synthesis strategy. When doped into NCs,...
To realize the 2D microbend sensor, we design and fabricate two non-orthogonal long-period fiber gratings (LPFGs) in an isosceles triangle arrangement three-core optical which is made our lab, making fiber. mark directions without crosstalk, write different periods of LPFG each external cores central core, induces a strong asymmetric refractive index cross section. Theoretical analysis experimental results verify that resonant wavelength originates from tunneling between LP01 core mode...
A novel bidirectional high-sensitivity fiber-optic bending sensor based on the concave-lens-like long-period fiber grating (CLL-LPFG) is designed and demonstrated. The CLL-LPFG composed by an array of arc-shaped planes, accordingly, its refractive index modulation serves as a concave lens. As result, eigencladding mode device gets closer to surface than conventional counterpart. Therefore, proposed provides more sensitive result. experimental results show that sensitivities reach -32.782...
A novel optical fiber grating vector bending sensor head is demonstrated. The composed by two cascaded 6° tilted long period gratings, which are separated a distance d. asymmetric characteristics of the proposed originate from gratings with angles placed oppositely and exposure CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> laser pulses. Two selected dips shift toward each other when bent. interval between used for improving...
A novel bending vector sensor formed by splicing 2-core fiber (2CF) between two segments of multimode fibers (MMFs) was proposed and fabricated, in which the MMFs serve as mode splitting coupling. Moreover, 2CF used experiment designed fabricated our labs, external core with a larger diameter would be provided higher sensitivity. Besides, responses are directionally sensitive due to asymmetric structure 2CF. As result, along implementation conformation experiments on temperature property,...
A 2-D fiber Bragg grating (FBGs) accelerometer is proposed and experimentally demonstrated in this paper. The composed of a universal flexure hinge two FBGs which the are vertically attached on surface hinge. sensing characteristics analyzed theoretically. theoretical analysis results show that device has linear response to applied acceleration it was confirmed by experiments. experimental resonant frequencies 1050/1060 Hz x/y direction, respectively. wide frequency from 50 900 large...
To determine how the reduction of medial and anteromedial cortices using CT findings in 31-A2 intertrochanteric fractures treated with intramedullary nail could affect clinical outcomes complication rates fractures. We retrospectively analyzed data 43 patients who underwent closed internal fixation (CRIF) between January 2010 December 2013. Patients were classified into two groups based on post-operative scans taken from sagittal coronal planes, respectively. Five radiographic parameters...
Abstract Broadband white‐light emissions from low‐dimensional organic metal halides have received great attention for applications in energy‐efficient lighting and displays. However, the simultaneous realization of excellent color rendering indexes (CRIs) high photoluminescence quantum efficiencies (PLQEs) single‐component emitters remains a challenge. Here, unique 0D copper iodide (TPA)CuI 2 (TPA = tetrapropylammonium) is developed, which edge‐sharing double trigonal planar [Cu I 4 ] 2−...
A robust and compact fiber sensor for simultaneous measurement of curvature temperature based on LP11 mode Bragg grating is proposed demonstrated in this paper. The formed by splicing a short piece seven-core (SCF) with to single (SMF). inscribed UV light exposure, mainly LP01 resonance peak are observed the reflection spectrum. experimental results show that wavelength insensitive but power very sensitive curvature. sensitivity −7.27 dB/m−1 linearity 0.997 range 0–1 m−1. characteristic...
The aim of this study is to evaluate the effectiveness laboratory serum tests in diagnosis infected nonunion.Forty-two patients suspected having nonunion were investigated study. levels white blood-cell count (WBC), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), and interleukin-6 (IL-6) measured. A positive infection was made on basis culture results. sensitivity, specificity, predictive value (PPV), negative (NPV) each test calculated.The sensitivity specificity CRP both...
A two-dimensional bending vector sensor based on the multimode-3-core-multimode fiber structure is proposed. The three cores of 3-core (3CF) distribute in an isosceles triangle. In order to obtain a higher sensitivity, two larger diameter external are selected design 3CF. Owing asymmetric 3CF, this can distinguish multiple directions. addition, linear spectral response for and temperature observed experimentally. proposed has many advantages. For example, it compact, inexpensive, easy be...
Lead-free double-perovskite nanocrystals (NCs) have emerged as a promising material to address the issues of instability and toxicity associated with lead-based materials. Metal ion doping or alloying strategies been widely used tailor optimize optical electrical properties semiconductor In this study, we prepared monodisperse Cs2AgBiBr6 NCs uniform morphology (8 ± 1 nm) excellent crystallinity using thermal injection method. Compared photoluminescence quantum yield (PLQY) (∼0.4%), highest...
A novel arch-shaped long-period fiber grating (ALPFG) is proposed and fabricated by a high-frequency CO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> laser on single-mode fiber. The ALPFG composed of string arch grids, which can provide stronger refractive index modulation than normal planar grids. asymmetrical structure induced grid one-side exposure allows it to sense vector bending in two orthogonal directions. Within the curvature...
An ultra-high sensitivity fiber liquid level sensor based on wavelength demodulation is proposed and demonstrated. The composed of a segment multimode large aperture hollow-core assisted by Bragg grating (FBG). Interference occurs due to core mismatching different modes with effective refractive indices. experimental results show that the 1.145 nm mm−1, linearity up 0.996. dynamic temperature compensation can be achieved cascading an FBG. Considering high compact structure sensor, it used...
Metal halide perovskites are affected by the quantum effect, their size is equal to Bohr radius of material, and they exhibit excellent emission performance charge-transfer performance. We have synthesized CsPbX3 (X = Cl/Br, Br, Br/I) monodisperse nanocrystals (NCs) a simple heat injection method. The band gap energy wavelength can be changed adjusting composition nanocrystals. NCs an linewidth 18–29 nm, photoluminescence lifetime 5.7–20.8 ns, fast carrier-transfer rate. In this paper,...