Article
Chemistry, Multidisciplinary
Shuang Zhou, Zhong Wang, Chenyu Dong, Jie Bian, Weihua Zhang
Summary: This study investigated the wavelength-dependent laser-induced dynamic annealing of single plasmonic nano-antennas using in situ white light spectroscopy. The experiment revealed unexpected back-and-forth motions of rapidly melted single nano-antennas under excitation with a 532 nm laser, while gradual opening of nanogaps was observed with a 405 nm laser. Theoretical analyses suggested that the complex dynamics were caused by multiphysical processes at the nanoscale induced by the laser.
Article
Chemistry, Multidisciplinary
Jeongwon Kim, Sungwoo Lee, Jiwoong Son, Jieun Kim, Hajir Hilal, Minsun Park, Insub Jung, Jwa-Min Nam, Sungho Park
Summary: Rational design of plasmonic colloidal assemblies via bottom-up synthesis is challenging but can demonstrate unprecedented optical properties that are strongly related to the shape and spatial arrangement of the assembly. In this study, plasmonic cyclic Au nanosphere hexamers (PCHs) were successfully synthesized and showed excellent performance in single-particle surface-enhanced Raman scattering signals.
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: The study focuses on the plasmonic coupling between noble-metal and semiconductor nanostructures, and reveals the enhanced charge transfer and surface-enhanced Raman scattering (SERS) signals in a designed W18O49/Ag heterostructure. A new coupled-plasmon-induced charge transfer mechanism is proposed, providing insight for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Ruipeng Chen, Yunfeng Sun, Bingyang Huo, Zefeng Mao, Xiaojuan Wang, Shiyu Li, Ran Lu, Shuang Li, Jun Liang, Zhixian Gao
Summary: A universal surface-enhanced Raman scattering (SERS) aptasensor was developed for the detection of Zearalenone (ZEN) with a linear detection range from 0.005 to 500 ng mL(-1) and a detection limit of 0.001 ng mL(-1). The sensor showed excellent performance for analytical applications with real-world samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Food Science & Technology
Chundi Yu, Ziqian Huang, Tao Ping, Hang Su, Qingli Yang, Wei Wu
Summary: Food safety detection is rapidly developing with high throughput, and nanoparticles, especially gold nanoparticles (AuNPs), are widely used in the detection of foodborne pathogens due to their stable chemical and optical properties. In this study, two types of aptasensors based on AuNPs were established: a visual detection method using AuNPs lateral flow aptasensor, and a surface-enhanced Raman spectroscopy (SERS) aptasensor using silver-core gold-shell nanoparticles (Ag@Au). The former allows for visual readings and achieved initial diagnosis of three common pathogenic bacteria with a detection limit of 20-30 CFU/mL, while the latter achieved high sensitivity and high-throughput detection with a detection limit of 2 CFU/mL by improving sensitivity through Ag@Au. We systematically studied the structure, function, and optical signal characteristics of AuNPs in detection, providing a valuable reference for future detection of foodborne pathogens.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Lin Zhu, Zhen Meng, Saizhen Hu, Tiancong Zhao, Bing Zhao
Summary: In this study, we for the first time observed and considered the plasmonic coupling between noble-metal and semiconductor nanostructures in metal/semiconductor heterostructures, using a W18O49/Ag heterostructure composed of Ag nanoparticles and W18O49 nanowires. The heterogeneous structure exhibited a broad and strong surface plasmon resonance (SPR) absorption in the visible wavelength range. Surface-enhanced Raman scattering (SERS) was used to investigate the interactions between metal SPR, semiconductor SPR, and the heterostructure's charge transfer process, revealing that the coupled SPR enhanced the heterostructure's internal charge transfer and SERS signals. A new coupled-plasmon-induced charge transfer mechanism was proposed to explain the improved charge transfer efficiency. This work provides insights for further studies on plasmonic effects and interfacial charge transfer in metal/semiconductor heterostructures.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Mohammed Alsawafta
Summary: In this study, the optical properties and plasmonic coupling features of a compositionally asymmetric nanorod dimer were investigated using Finite-difference time-domain (FDTD) electromagnetic simulation tool. The results showed both red and blueshift in the longitudinal mode excited in the Ag rod as the two nanorods were longitudinally shifted away from each other. The resonance energy of the Ag rod was observed to have almost no dependency on the gap spacing while the resonance wavelength of the Au rod exhibited a blue shift with increasing gap spacing.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Analytical
Sen Li, Defu He, Shuning Li, Ruipeng Chen, Yuan Peng, Shuang Li, Dianpeng Han, Yu Wang, Kang Qin, Shuyue Ren, Ping Chen, Zhixian Gao
Summary: In this study, a novel aptamer sensor based on magnetic separation and surface-enhanced Raman scattering (SERS) was proposed for the sensitive and specific detection of trace BPA. The sensor showed high sensitivity and specificity through the pairing of the BPA aptamer and DNA. The proposed aptasensor is a promising biosensing platform for BPA detection.
Article
Spectroscopy
Afang Zhu, Shujat Ali, Yi Xu, Qin Ouyang, Zhen Wang, Quansheng Chen
Summary: A surface enhanced Raman scattering (SERS) sensor combined with chemometrics was used to discriminate three pathogenic bacteria and quantitatively detect Staphylococcus aureus.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
Mariia Samodelova, Olesya O. Kapitanova, Nadezda F. Meshcheryakova, Sergey M. Novikov, Nikita R. Yarenkov, Oleg A. Streletskii, Dmitry Yakubovsky, Fedor Grabovenko, Gleb A. Zhdanov, Aleksey Arsenin, Valentyn S. Volkov, Elena G. Zavyalova, Irina A. Veselova, Maria Zvereva
Summary: The recent SARS-CoV-2 infection has presented a challenge for the development of fast virus identification methods based on sensor principles. Researchers have created a novel aptasensor using a sandwich mode with a structure modeling surface and size of the virus. The results show high stability and potential for detecting coronaviruses.
Article
Optics
Fengrui Li, Baojie Shan, Xiaofei Zhao, Chang Ji, Zhen Li, Jing Yu, Shicai Xu, Yang Jiao, Chao Zhang, Baoyuan Man
Summary: This study proposes a new composite nanofiber membrane, PVDF@Ag-ZnO/Au, that utilizes the coordination of piezoelectric and plasmonic effects to regulate the separation and migration of photo-generated carriers. The membrane shows enhanced photocatalytic degradation of organic dyes and has excellent flexibility and recyclability.
Article
Chemistry, Physical
Jihua Xu, Enze Lv, Xiaofei Zhao, Jing Yu, Shicai Xu, Jinmeng Li, Zhen Li, Mei Xue, Chao Zhang, Jie Pan
Summary: This study proposes a Au/Ag/CuO NW/PVDF substrate that enables highly sensitive SERS detection and efficient piezoelectric photocatalysis for the degradation of organic pollutant molecules. The enhanced SERS and catalytic performance are achieved through the coupling of piezoelectric and plasmonic effects.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Hajir Hilal, Mohammadnavid Haddadnezhad, Myeong Jin Oh, Insub Jung, Sungho Park
Summary: Elongated pseudohollow nanoframes composed of four rectangular plates enclosing the sides and two open-frame ends with four ridges pointing at the tips for near-field focusing are reported. The nanoframes are hollow inside, allowing the gaseous analyte to penetrate through the entire architecture and enabling efficient detection of gaseous analytes when combined with Raman spectroscopy. The significant enhancement in SERS is attributed to the presence of a flat solid terrace for a large surface area, sharp edges and vertices for strong electromagnetic near-field collection, and open frames for effective analyte transport and capture.
Article
Nanoscience & Nanotechnology
Napatsakorn Kamkrua, Thitaphat Ngernsutivorakul, Saksorn Limwichean, Pitak Eiamchai, Chanonthorn Chananonnawathorn, Viyapol Pattanasetthakul, Raffaele Ricco, Kiattawee Choowongkomon, Mati Horprathum, Noppadon Nuntawong, Tanujjal Bora, Raju Botta
Summary: In this study, a SERS-based aptasensor platform was developed for the sensitive and selective detection of the herbicide paraquat (PQ) by modifying gold (Au) nanoparticle SERS substrates with a thiol-containing aptamer. The aptamer-modified SERS substrates showed improved sensitivity and selective detection of PQ, with a limit of detection estimated to be 0.10 ± 0.03 μM. The developed aptasensor platform demonstrated good stability and selectivity against interferences from other similar herbicides and insecticides in natural water samples.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jingxian Li, Mengyu Luo, Can Jin, Penghui Zhang, Hongfen Yang, Ren Cai, Weihong Tan
Summary: In this study, a high-performance ECL platform was constructed using plasmonic bimetal nanostructures, which can be employed to amplify electrochemiluminescence (ECL) signals. The designed ECL aptasensor exhibited highly sensitive detection for lincomycin (Lin).
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biophysics
Huanhuan Li, Wenhui Geng, Zhixiong Qi, Waqas Ahmad, Quansheng Chen
Summary: A stimuli-responsive SERS biosensor was developed for tetracycline detection using EDTA-driven polyethyleneimine grafted calcium carbonate microcapsules and chitosan-Fe magnetic microbeads. The biosensor showed high sensitivity and stability, with a linear relationship established and a LOD of 0.03 ng/mL. The biosensor's application in detecting tetracycline in food matrices was also validated and yielded consistent results with the standard ELISA method. This SERS biosensor offers promising prospects for tetracycline detection.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Applied
Qin Ouyang, Lihua Liu, Li Wang, Muhammad Zareef, Zhen Wang, Haoquan Li, Juan Yin, Quansheng Chen
Summary: This study proposes a method for predicting the compositions of matcha using a portable NIR spectroscopy system and compares it with a benchtop FT-NIR spectroscopy system. The results show that the BOSS-PLS models yield satisfactory predictions for both NIR spectroscopy types. Moreover, the portable NIR-IS system has a prediction ability comparable to the benchtop FT-NIR, making it suitable for on-site prediction of matcha compositions.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2023)
Article
Chemistry, Analytical
Baoning Wang, Waqas Ahmad, Quansheng Chen, Qin Ouyang
Summary: A sensitive fluorescence nanosensor was developed for the detection of nitrite in pickled meat products, offering rapid detection and low detection limits.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Spectroscopy
Suleiman A. Haruna, Huanhuan Li, Wenya Wei, Wenhui Geng, Xiaofeng Luo, Muhammad Zareef, Selorm Yao-Say Solomon Adade, Ngouana Moffo A. Ivane, Adamu Isa, Quansheng Chen
Summary: In this study, the potential of near-infrared spectroscopy coupled with efficient variable selection algorithms for quantitative prediction of flavonoids and phenolic compounds in raw peanut seeds was explored. The Si-CARS-PLS model performed optimally for predicting total flavonoids and total phenolics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Rui Ge, Hanjie Dai, Shumin Zhang, Jie Wei, Tianhui Jiao, Qingmin Chen, Quansheng Chen, Xiaomei Chen
Summary: In this study, a photoelectrochemical (PEC) biosensor combined with recombinase polymerase amplification (RPA) technology (RPA-PEC) was proposed for rapid detection of multiple foodborne pathogens. The RPA was initiated on homemade three-dimensional screen-printed paper-based electrodes, forming a lab-on-paper platform. Using the DNA-PEC signaler, photocurrents were achieved after only 20 minutes of RPA, with superior detection performance compared to conventional agarose gel electrophoresis.
ANALYTICAL CHEMISTRY
(2023)
Review
Biophysics
Yizhuo Yang, Fang Xu, Jisen Chen, Chunxu Tao, Yunxin Li, Quansheng Chen, Sheng Tang, Hian Kee Lee, Wei Shen
Summary: Artificial intelligence (AI) has rapidly developed and been widely applied in various fields since its conception, especially in conjunction with the advanced hardware technologies of smartphones. Researchers have explored the integration of smartphones with AI algorithms for intelligent analysis and have developed diverse applications in bioanalytical detection. This review provides an overview of this field, focusing on hardware design, software algorithms, specific application areas, limitations, and future prospects of AI-based smartphone detection and analysis. While the limitations of smartphone hardware and insufficient data for AI model building restrict the application of AI in detection analysis, the technology is expected to make further advancements in other fields, with the potential for increased participation from the general public.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Automation & Control Systems
Jiaji Zhu, Xin Jiang, Qianjin Wang, Jizhong Wu, Shengde Wu, Xiaojing Chen, Quansheng Chen
Summary: A novel hybrid variable selection strategy, MA-iPLS + HSIC-VSIO, is proposed in this study for spectroscopic analysis. It combines MA-iPLS and HSIC-VSIO methods to optimize variable selection. The results demonstrate the excellent performance of MA-iPLS + HSIC-VSIO for molecular spectroscopic analysis.
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
(2023)
Article
Chemistry, Applied
Lihua Liu, Muhammad Zareef, Zhen Wang, Haoquan Li, Quansheng Chen, Qin Ouyang
Summary: The study aims to explore the mechanism of chlorophyll changes during Tencha processing and evaluate the feasibility of predicting its content using a portable near-infrared (NIR) spectrometer. Various preprocessing techniques were used to preprocess the Tencha samples' spectral data, and IVSO, BOSS, and CARS were used to optimize and build PLS models. The CARS-PLS models achieved the best predictive accuracy, with correlation coefficients of prediction (Rp) = 0.9204 for chlorophyll a, Rp = 0.9282 for chlorophyll b, and Rp = 0.9385 for total chlorophyll. These findings suggest that NIR spectroscopy could be used as a surrogate for immediate quantification and monitoring of chlorophyll during Tencha processing.
Article
Chemistry, Analytical
Waqas Ahmad, Li Wang, Muhammad Zareef, Quansheng Chen
Summary: A highly structured fluorometric bioassay utilizing upconversion nanoparticles and a dark receptor has been developed for screening Staphylococcus aureus. The assay relies on the energy transfer between donor-labeled nanoparticles and a receptor molecule, resulting in fluorescence activation upon target detection. The assay demonstrated excellent sensitivity and accuracy in detecting S. aureus in various samples. This method offers a fast and precise screening approach for S. aureus in food and environmental settings.
Article
Instruments & Instrumentation
Hui Jiang, Yingchao Xue, Quansheng Chen
Summary: This study introduces a novel deep transfer learning (DTL) approach based on convolutional neural networks (CNN) and Fourier transform near-infrared (FT-NIR) spectroscopy to enhance the accuracy of predicting the residual levels of chlorpyrifos in corn oil. The proposed method utilizes DTL to transfer the parameters learned from a trained model to enhance the performance of a new model. The research findings demonstrate that the developed DTL method achieves superior predictive accuracy while utilizing a smaller amount of FT-NIR spectral data.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Instruments & Instrumentation
Mingxing Zhao, Hui Jiang, Quansheng Chen
Summary: A method for the quantitative detection of procymidone residues in grain and oil products using NIR spectroscopy was proposed. Three wavelength selection algorithms and two parameter optimization algorithms were compared, and the SVR model using CARS and PIO algorithm demonstrated the best performance. The results showed that the SVR model optimized by input feature and parameter based on NIR spectral data can achieve high-precision and rapid detection of procymidone in edible oil, which is of great significance in ensuring the safety of grain and oil food.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Wenwen Wu, Md Mehedi Hassan, Xiaodan Ding, Jizhong Wu, Qin Ouyang, Quansheng Chen
Summary: A novel fluorescence aptasensor was developed for detection of sulfadiazine (SDZ) using a pH-sensitive strategy to enhance fluorescence resonance energy transfer (FRET). Acetylcholinesterase (AChE) regulated the FRET between upconversion nanoparticles (UCNPs) and pH-sensitive fluorescein isothiocyanate (FITC) dye. The specific recognition of aptamer to SDZ disrupted the assembly, leading to reduced fluorescence recovery. The biosensor exhibited a linear relationship with a concentration range of 0.1-100 ng/mL and a limit of detection (LOD) of 0.031 ng/mL. Comparison with enzyme-linked immunosorbent assay (ELISA) showed satisfactory results (p > 0.05).
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Applied
Huanhuan Li, Xiaofeng Luo, Suleiman A. Haruna, Muhammad Zareef, Quansheng Chen, Zhen Ding, Yiyong Yan
Summary: This study developed a method for the rapid and sensitive detection of pesticide residues in tea using surface-enhanced Raman scattering (SERS) and an intelligent algorithm. Au-Ag octahedral hollow cages (Au-Ag OHCs) were developed to amplify the Raman signals of pesticide molecules, using octahedral Cu2O templates to improve the surface plasma effect. Convolutional neural network (CNN), partial least squares (PLS), and extreme learning machine (ELM) algorithms were applied for the quantitative prediction of thiram and pymetrozine, with CNN algorithms performing optimally. The proposed Au-Ag OHCs-based SERS technique could be utilized for quantifying thiram and pymetrozine in tea.
Article
Chemistry, Analytical
Afang Zhu, Shujat Ali, Zhen Wang, Yi Xu, Rongxi Lin, Tianhui Jiao, Qin Ouyang, Quansheng Chen
Summary: In this study, a microarray SERS chip was synthesized for rapid and accurate detection of bacteria and effective inhibition or inactivation of pathogens. The chip demonstrated high sensitivity for bacterial detection and confirmed antibacterial and photocatalytic sterilization properties. It offers promising strategies for foodborne diseases caused by pathogenic bacteria.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Wencui Kang, Hao Lin, Waqas Ahmad, Huanhuan Li, Quansheng Chen
Summary: A nano-composite colorimetric sensor array coupled with near infrared spectroscopy was developed for the determination of active constituents. The sensor array, composed of chemically responsive dyes doped metal-organic frameworks, showed sensitive interaction with different volatile markers. Chemometric methods were used to separate kombucha broth samples with different fermentation times, enabling the estimation of the chemical and physical properties of tea fermentation broth.
MICROCHEMICAL JOURNAL
(2023)
