Xuhui Geng

ORCID: 0009-0001-9126-679X
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About
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Research Areas
  • Analytical Chemistry and Sensors
  • Biosensors and Analytical Detection
  • Microfluidic and Capillary Electrophoresis Applications
  • Mycotoxins in Agriculture and Food
  • Analytical chemistry methods development
  • Advanced Chemical Sensor Technologies
  • Advanced biosensing and bioanalysis techniques
  • Indoor Air Quality and Microbial Exposure
  • Spectroscopy and Laser Applications
  • Gas Sensing Nanomaterials and Sensors
  • Sulfur Compounds in Biology
  • Optical Imaging and Spectroscopy Techniques
  • Molecular Sensors and Ion Detection
  • Photodynamic Therapy Research Studies
  • Pesticide Residue Analysis and Safety
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • Electrochemical sensors and biosensors
  • Odor and Emission Control Technologies
  • GaN-based semiconductor devices and materials
  • Coffee research and impacts
  • Mercury impact and mitigation studies
  • Analytical Chemistry and Chromatography
  • Monoclonal and Polyclonal Antibodies Research
  • Listeria monocytogenes in Food Safety
  • SARS-CoV-2 detection and testing

Dalian Institute of Chemical Physics
2012-2025

Chinese Academy of Sciences
2011-2024

The development of reliable probe technology for the detection bisulfite (HSO3-) in situ food and biological samples is contributing significantly to quality safety assurance as well community health. In this work, a responsive probe, EHDI, developed ratiometric fluorescence HSO3- aqueous solution, meat samples, living cells. designed based on triggered 1,4-addition electron deficit C = bond EHDI. As result specific 1,4-addition, π-conjugation system was destructed, resulting blue shifts...

10.1016/j.ymeth.2024.03.010 article EN cc-by Methods 2024-03-31

We have developed an ultrasensitive and highly selective method to quantify low copy number intracellular proteins in a single cell using low-cost laser-induced fluorescence (LIF) detector BV605 fluorescent probe. Active caspase3 cells were labeled by corresponding antibody-BV605 binding, was injected into 20 cm × 50 μm i.d. capillary column, followed situ lysis electrophoresis (CE)-LIF analysis. About seven active protein molecules detection volume of 91 pL could be detected. In our method,...

10.1021/acs.analchem.9b02989 article EN Analytical Chemistry 2019-09-03

A miniature laser-induced fluorescence (mLIF) detector utilizing a novel spherical dichroic reflector (SDR), an unconventional long working distance high magnification objective, uncommon broadband emission-matched excitation filter pair, and silicon-based photodiode assembly instead of photomultiplier tube was developed evaluated. The detection cell placed at the center SDR regular focus, yielding 1.8× signal-to-noise ratio (SNR) improvement. Different from previous works, use 40× objective...

10.1021/acs.analchem.0c01180 article EN Analytical Chemistry 2020-06-05

A novel "windmill" three-channel light-emitting diode induced fluorescence detector (LED-IF) was proposed to maximize the excitation efficiency and collection efficiency. Compared with typical collinear arrangement, intensity of three channels increased by 7.85, 3.88, 2.94 times, respectively. The compact shaping optical path designed obtain higher a lower background stray light effect caused high divergence angle high-power ultraviolet (UV)-LEDs simultaneously, which sensitivity 4.6 5.7...

10.1021/acs.analchem.4c00311 article EN Analytical Chemistry 2024-06-14

The development of a novel strategy for the measurement SARS-CoV-2 IgG antibodies is vital significance COVID-19 diagnosis and effect vaccination evaluation. In this investigation, an SiO2@Au@CDs nanoparticle (NP)-based lateral flow immunoassay (LFIA) strip was fabricated coupled with miniaturized fluorimeter. morphology features particle sizes NPs were characterized carefully, results indicated that materials possess monodisperse, uniform, spherical structures. Finally, system employed...

10.3390/biom14121568 article EN cc-by Biomolecules 2024-12-09
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