A5060680817- Advanced Fiber Optic Sensors
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Optical Network Technologies
- Advanced Fiber Laser Technologies
- Electrochemical sensors and biosensors
- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Semiconductor Lasers and Optical Devices
- Essential Oils and Antimicrobial Activity
- Spectroscopy Techniques in Biomedical and Chemical Research
- Carbon and Quantum Dots Applications
- Advanced Nanomaterials in Catalysis
- Gold and Silver Nanoparticles Synthesis and Applications
- Laser-induced spectroscopy and plasma
- Electrocatalysts for Energy Conversion
- Spectroscopy and Chemometric Analyses
- Conducting polymers and applications
- Nanocluster Synthesis and Applications
- Biosensors and Analytical Detection
- Graphene and Nanomaterials Applications
- Laser-Matter Interactions and Applications
- biodegradable polymer synthesis and properties
- Analytical Chemistry and Sensors
- Advancements in Transdermal Drug Delivery
University of Chinese Academy of Sciences
2021-2025
Xi'an Jiaotong University
2025
National University of Defense Technology
2019-2024
Yangzhou University
2023-2024
Xi'an University of Technology
2024
The University of Tokyo
2024
Shanghai Zhangjiang Laboratory
2023
Qingdao Agricultural University
2023
Chinese Academy of Sciences
2009-2020
Changchun Institute of Applied Chemistry
2014-2020
In this work, we report a green and simple strategy for the in situ growth of surfactant-free Au nanoparticles (Au NPs) on nitrogen-doped graphene quantum dots NPs-N-GQDs). The formation hybrid was achieved by just mixing N-GQDs HAuCl4·4H2O without addition any other reductant surfactant. High-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS) characterizations clearly showed with predominantly exposed (111) facets which can provide...
Fluorescent carbon dots prepared by a heat treatment of ethylene glycol solution can act as fluorescence turn-on probes for sensitive and selective detection Ag<sup>+</sup> ions.
Fluorescence turn-on sensor based on nitrogen-doped graphene quantum dots can be used for glutathione detection in living cells.
This paper overviews recent development in gas detection with micro- and nano-engineered optical fibers, including hollow-core suspended-core tapered micro/nano fiber-tip micro-cavities. Both direct absorption photoacoustic spectroscopy based schemes are discussed. Emphasis is placed on post-processing stock fibers to achieve better system performance. Our demonstration of distributed methane a ∼75-m long photonic bandgap fiber also reported.
A novel fiber-tip micro-cavity pressure sensor was fabricated by use of a fusion splicer and pressurizing gas chamber. The fabrication process is simple efficient without the need for careful cleaving, chemical etching, bonding. Micro-cavities with wall thickness few micrometers demonstrated sensitivity ~ 315 pm/MPa . sensors have compact size, good mechanic strength, high temperature stability up to 600 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
To monitor blood glucose levels reliably, diabetic patients usually have to undergo frequent fingerstick tests draw out fresh blood, which is painful and inconvenient with the potential risk of cross contamination especially when lancet reused or not properly sterilized. This work reports a novel surface-enhanced Raman spectroscopy (SERS) sensor for in situ intradermal detection based on low-cost poly(methyl methacrylate) microneedle (PMMA MN) array. After incorporating 1-decanethiol (1-DT)...
Abstract Electrocatalytic water splitting has been identified as a potential candidate for producing clean hydrogen energy with zero carbon emission. However, the sluggish kinetics of oxygen evolution reaction on anode side water‐splitting device significantly hinders its practical applications. Generally, efficiency processes depends greatly availability cost‐effective catalysts high activity and selectivity. In recent years, extensive theoretical experimental studies have demonstrated that...
Topological swirling spin textures, such as skyrmions and merons, have recently attracted much attention a unique building block for high-density magnetic information devices. The controlled transformation among different types of quasi-particles is an important challenge, while it was previously achieved only in few non-centrosymmetric systems characterized by Dzyaloshinskii-Moriya interaction. Here, we report experimental discovery multi-step topological transitions variety meron skyrmion...
We report the results of our recent investigation on properties a highly birefringent photonic crystal fiber including modal birefringence, mode field diameter, divergence angle, and polarization dispersion, which are important for sensing communication applications.
Long period fiber gratings in hollow-core air-silica photonic bandgap fibers were produced by use of high frequency, short duration, CO 2 laser pulses to periodically modify the size, shape and distribution air holes microstructured cladding.The resonant wavelength these is highly sensitivity strain but insensitive temperature, bend external refractive index.These can be used as stable spectral filters novel sensors.
A low cost fiber-optic micro-cavity interferometric sensor is presented. The fabricated at the fiber tip by splicing a silica capillary to single mode and then heating/melting form microsphere with an internal air cavity. Applications of for temperature traverse load measurements are demonstrated. has small size good mechanical strength, may be used in high environment.
Graphene quantum dots (GQDs), the new zero-dimensional carbon nanomaterial, have been demonstrated as a promising material for biomedical applications due to its good biocompatibility and low toxicity. However, integration of multiple therapeutic approaches into nanosized platform based on GQD has not explored yet our best knowledge. In this report, we regulate generation reactive oxygen species (ROS) when using photosensitizer by varying doping amount nitrogen atoms achieve efficiency...
Single-polarization single-mode (SPSM) operation of a highly birefringent (HB) photonic crystal fiber (PCF) is investigated in detail by using full-vector finite-element method (FEM) with anisotropic perfectly matched layers (PMLs). The cutoff wavelengths the two linearly polarized principal states can be designed varying structure parameters PCF. confinement loss and splice to standard for particular SPSM PCFs are calculated optimized at both 1.30 1.55 /spl mu/m.
Strain and temperature characteristics of a long-period grating (LPG) written in an endless-single-mode photonic crystal fiber (ESM-PCF) are investigated theoretically experimentally. By use dispersion factor , deeper understanding the behavior LPG ESM-PCF is achieved. The negative strain sensitivity explained by value . Our analysis clearly reveals significant effect waveguide dispersive cladding modes on ESM-PCF. selecting appropriate period, simple, low-cost sensor with approximately zero...
Highly birefringent (Hi-Bi) air-clad silica microfibers (MFs) with wavelength and sub-wavelength scale transverse dimensions are studied theoretically experimentally.Hi-Bi MFs taper-drawn from the standard SMF-28 single mode fibers that "pre-processed" by "cutting away" parts of cladding on opposite sides fiber a femtosecond infrared laser.Such Hi-Bi have approximately elliptical cross-sections approximated three-layer model comprising small central Ge-doped region surrounded an...
Hollow nanostructures have gained much attention in the electroanalytical field. This work describes synthesis of CoS2–FeS2 nanoparticle-decorated hollow nitrogen-doped carbon nanocubes (CoS2–FeS2/HNCC) by a direct sulfidation Co–Fe Prussian blue analogue at high temperature. By integrating dual-phase metal sulfides and matrix, this nanocubic structure provides rich catalytic centers, enhanced conductivity, large surface area, 3D-porous channels, which all contribute to adsorption catalysis...
Rapid identification of fermented lactic acid bacteria has long been a challenge in the brewing industry. This study combined label-free surface-enhanced Raman scattering (SERS) and optical tweezer technology to construct test platform within microfluidic environment. Six kinds common industry were tested prove stability SERS spectra. The results demonstrated that utilization tweezers securely hold significantly enhanced Furthermore, SVM XGBoost machine learning algorithms utilized analyze...
In the course of femtosecond pulse filamentation in atmospheric density gases, peak intensity is always limited by optical-field-induced ionization. This clamping phenomenon universal all cases we studied, namely, single and multiple filament regimes with without external focusing using pulses up to subpetawatt level. Even tight cases, clamped along propagation direction does not exceed 30% global maximum. The remarkable shot-to-shot stability (better than 1% maximum value) revealed both...
While surface enhanced Raman spectroscopy (SERS) based biosensing has demonstrated great potential for point-of-care diagnostics in the laboratory, its application field is limited by short life time of commonly used silver SERS active substrates. In this work, we report our attempt towards biosensing, involving development a novel sustained and cost-effective substrate composed nanoparticles protected small nitrogen-doped Graphene Quantum Dots, i.e. Ag NP@N-GQD, systematic evaluation...