A5014074072- Gold and Silver Nanoparticles Synthesis and Applications
- Biosensors and Analytical Detection
- Spectroscopy Techniques in Biomedical and Chemical Research
- Plasmonic and Surface Plasmon Research
- Advanced biosensing and bioanalysis techniques
- Remote Sensing in Agriculture
- Spectroscopy and Chemometric Analyses
- Advanced Nanomaterials in Catalysis
- Quantum Dots Synthesis And Properties
- Nanocluster Synthesis and Applications
- Bee Products Chemical Analysis
- Radio Frequency Integrated Circuit Design
- Solid-state spectroscopy and crystallography
- Enhanced Oil Recovery Techniques
- Advanced Antenna and Metasurface Technologies
- Advanced Fluorescence Microscopy Techniques
- Chalcogenide Semiconductor Thin Films
- Drilling and Well Engineering
- Hydrocarbon exploration and reservoir analysis
- Microwave Engineering and Waveguides
- Perovskite Materials and Applications
Lanzhou University
2024
Chongqing University
2020-2024
Sichuan University of Arts and Science
2021-2024
Army Medical University
2024
Chongqing Medical University
2024
Second Affiliated Hospital of Chongqing Medical University
2024
Dalian Medical University
2024
East China Jiaotong University
2016-2021
Zhejiang University
2020
Bridge University
2020
In this work, we present a simple and novel digital surface-enhanced Raman spectroscopy (SERS)-microfluidic chip designed for the rapid accurate quantitative detection of microorganisms. The employs high-density inverted pyramid microcavity (IPM) array to separate isolate microbial samples. presence or absence target microorganisms is determined by scanning IPM using SERS identifying characteristic bands. This approach allows "digitization" response each IPM, enabling quantification through...
Abstract Background Photosynthetic pigments participating in the absorption, transformation and transfer of light energy play a very important role plant growth. While, spatial distribution foliar is an indicator environmental stress, such as pests, diseases heavy metal stress. Results In this paper, situ quantitative visualization chlorophyll carotenoid was realized by combining Raman spectroscopy with calibration model transfer, laboratory spectral successfully extended to portable field...
Serum creatinine is a key biomarker for the diagnosis and monitoring of kidney disease. Rapid sensitive detection thus important. Here, we propose high-performance nano-Ag/Au@Au film composite SERS substrate rapid in human serum. Au nanoparticles (AuNPs) Ag (AgNPs) with uniform particle size were synthesized by chemical reduction method, was successfully prepared via consecutive layer-on-layer deposition using an optimized liquid-liquid interface self-assembly method. The finite element...
In this study, we developed a novel digital surface-enhanced Raman spectroscopy (SERS) chip that integrates an inverted pyramid microcavity array, microchannel cover plate, and multilayer gold nanoparticle (AuNP) SERS substrate. This innovative design exploits the synergistic effects of array to enable rapid large-scale discretization bacterial suspensions. The concentration effect picoliter cavities, combined with superior enhancement AuNP substrate, allows for precise identification live...
Conventional solid-based SERS substrates often face challenges with inconsistent sample distribution, while liquid-based are prone to aggregation and precipitation, resulting in irreproducible signals both cases. In this study, we tackled dilemma by designing synthesizing raspberry-like plasmonic nanoaggregates that exhibit a high density of hotspots colloidally stable at the same time. particular, consist core made functionalized polystyrene (PS) microspheres, which act as template for...
To improve the sensitivity of disease biomarker detection, we proposed a high-performance surface-enhanced Raman spectroscopy (SERS) chip integrated with micro-optical system (MOS). The MOS, which is based on micro-reflecting cavity and micro-lens, optimizes optical matching characteristics SERS substrate detection system, greatly improves by improving collection efficiency scattering signal. A uniform single layer silver nanoparticles gold film was prepared as using liquid-liquid interface...
Nanoparticle multilayer substrates usually exhibit excellent SERS activity due to multi-dimensional plasmon coupling. However, simply increasing the layers will lead several problems, such as complex manufacturing procedures, reduced uniformity and poor reproducibility. In this paper, local electric field (LEF) characteristics of a Ag nanoparticle (AgNP) were systematically studied through finite element simulations. We found that, on glass support, LEF intensity improved with increase in...
To improve the sensitivity of surface-enhanced Raman spectroscopy (SERS) detection, we propose a three-dimensional (3D) SERS chip based on an inverted pyramid micro-reflector (IPMR) that converges scattering light signals to signal collection efficiency. The influence geometric parameters structure efficiency was analyzed by simulation for determination optimal design parameters. through-hole prepared silicon wafer through anisotropic wet etching process, followed sputtering gold film form...
In this research, we propose a novel microlens surface-enhanced Raman spectroscopy (SERS) substrate @ Au film detection system, which is shown to have excellent attributes. This scheme involves the construction of PDMS plano-convex SERS-active in combination with an film. Due optical convergence from microlens, synergistic enhancement effects due film, and "Au film-molecules-AgNPs" sandwich structure, outstanding SERS performance achieved. Multiple tests using portable spectrometer show that...
A compact high-selectivity microstrip tri-band bandpass filter (BPF) using a multimode short stub-loaded symmetric loop resonator (SLSLR) with feed structure is proposed in this paper. Distinct mode splitting characteristics of the quadruple-mode SLSLR are investigated and explained by even-and odd-mode theory. The dual-band BPF realized SLSLR. Then, high-impedance feeding lines modified to produce new passband. To validate approach, centered at 1.4/2.7/3.57 GHz has been implemented. Good...
Abstract Background: Photosynthetic pigments participating in the absorption, transformation and transfer of light energy play a very important role plant growth. While, spatial distribution foliar is an indicator environmental stress, such as pests, diseases heavy metal stress. Results: In this paper, situ quantitative visualization chlorophyll carotenoid was realized by combining Raman spectroscopy with calibration model transfer, laboratory spectral successfully extended to portable field...