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
Chemistry, Multidisciplinary
Suotao Dong, Xiuhua Fu, Zhongyao Zhu, Cheng Li
Summary: This article introduces a method to enhance surface Raman scattering by utilizing the local surface plasmon resonance phenomena. By depositing silver on the surface of zinc oxide thin films with different pH values, the Raman scattering signal is significantly improved, and the optimal acid-base environment is identified.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Jessi E. S. van der Hoeven, Harith Gurunarayanan, Maarten Bransen, D. A. Matthijs de Winter, Petra E. de Jongh, Alfons van Blaaderen
Summary: The study introduces a new type of functional assembly called supraparticles, which are formed by the solvent-driven assembly of silica-coated gold nanorods into spherical ensembles. The plasmonic coupling and mass transport are controlled by adjusting the thickness and porosity of the silica shells. These novel materials have the potential to play an important role in sensing applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Nazar Riswana Barveen, Tzyy-Jiann Wang, Ying-Yu Wang, Cheng-Yao Weng, Kai-Jiun Chen
Summary: The development of flexible and transparent detection platforms using surface-enhanced Raman spectroscopy is highly important for in-situ, real-time analysis. In this study, soft and ultra-thin substrates composed of silver nanoparticles were fabricated for ultrasensitive detection of antibiotics. The utilization of nanotips-equipped ferroelectric templates significantly enhanced the Raman performance, resulting in excellent sensitivity, reproducibility, and uniformity.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Chih-Feng Wang, Patrick Z. El-Khoury
Summary: The study reveals that nonlinear optical processes can be enhanced at plasmonic tip-sample nanojunctions, allowing for high-spatial-resolution chemical analysis through enhanced spectroscopies.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Polymer Science
Krzysztof Jerczynski, Julita Muszynska, Gokhan Demirci, Onur Cetinkaya, Paulina Filipczak, Grzegorz Nowaczyk, Jaroslaw Grobelny, Krzysztof Matyjaszewski, Marcin Kozanecki, Joanna Pietrasik
Summary: This work reports on the efficient performance of hybrid particles with silver nanoparticles distributed within single polymer molecules as Surface Enhanced Raman Scattering (SERS) supports. Through controlled synthesis methods and structure parameters of polymer templates, the researchers successfully synthesized hybrid particles with star-like topology and achieved stable detection of analytes at nanomolar level.
Article
Chemistry, Analytical
Yu Fukunaga, Makoto Harada, Tetsuo Okada
Summary: Freezing is proposed as an efficient way to enhance sensitivity and reproducibility in SERS measurements, maximizing signal intensity and preparing a high-performance SERS platform through simple methods.
Article
Chemistry, Physical
Mingming Chen, Bowen Du, Qian Wang, Jiaxin Zhang, Xiajun Zhu, Zhengyu Lin, Yongqiang Dong, FengFu Fu, Ting Yu
Summary: Single-layer carbon dots are used as capping agents in the synthesis of silver nanoparticles, leading to the formation of nanohybrids that can self-assemble into different nanostructures. The aggregation of AgNPs/CDs is controlled by the key role of CDs, affecting surface plasmon absorption and SERS activity. Various dimensions of aggregated AgNPs/CDs serve as effective SERS substrates with strong localized surface plasmon resonance.
Article
Spectroscopy
Annah M. Ondieki, Zephania Birech, Kenneth A. Kaduki, Peter W. Mwangi, Nancy M. Mwenze, Moses Juma, Carolyne Jeptoo, M. S. Dlamini, Malik Maaza
Summary: This research introduces surface-enhanced Raman spectroscopy (SERS) substrates based on colloidal silver nanoparticles (AgNPs) produced by laser ablation of silver granules. The optimal parameters were determined by investigating the effects of laser power, pulse repetition frequency, and ablation duration on the Surface Plasmon Resonance peak of AgNPs solutions. The synthesized AgNPs were characterized and found to have potential applications in forensics, drug efficacy monitoring, disease diagnostics, and pathogen detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Shuyun Bi, Yue Yuan, Fengming Zhang, Yuting Wang, Jia Liu, Bin Yang, Daqian Song
Summary: This study established detection methods for two aminoglycoside antibiotics, gentamicin (GEN) and tobramycin (TOB), utilizing surface-enhanced Raman spectroscopy (SERS) based on gamma-Al2O3-modified silver nanoparticles (AgNPs) coated with bovine serum albumin (BSA). The pH, the addition amounts for the substrate and coagulant, as well as the mixing time were optimized. The methods were successfully used for the determination of GEN and TOB in commercial drugs and meat products.
Article
Chemistry, Multidisciplinary
Su-Bin Lee, Seung-Min Paek, Jae-Min Oh
Summary: The research proposed a method to immobilize AgNP on metal oxide for enhanced SERS activity. Characterization and SERS tests showed that the sample prepared at 600 degrees C exhibited the best performance.
Article
Food Science & Technology
Su-Yan Wang, Xin-Chi Shi, Gui-Yang Zhu, Yun-Jiao Zhang, Da-Yong Jin, Yi-Dong Zhou, Feng-Quan Liu, Pedro Laborda
Summary: This study comprehensively covers all reported methods for the detection of pesticides in fruit and fruit juice using SERS enhanced with gold and silver nanoparticles, comparing detection parameters obtained under different experimental conditions. The achievements and limitations of this technique for pesticide detection in fruit and fruit juice are discussed.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Eric Boateng Osei, Liliia Paniushkina, Konrad Wilhelm, Juergen Popp, Irina Nazarenko, Christoph Krafft
Summary: Extracellular vesicles (EVs) ranging in size from 60 to 800 nm were isolated from plasma of control and prostate cancer patients using differential centrifugation and ultrafiltration techniques. Spontaneous Raman and surface-enhanced Raman spectroscopy (SERS) were employed to identify fractions that best discriminate between control and cancer patients, with results showing that EV12 and EV120 fractions provide the most effective separation.
Article
Spectroscopy
Lulu Xu, Ruimei Wu, Xiang Geng, Xiaoyu Zhu, Yao Xiong, Tao Chen, Shirong Ai
Summary: In this study, surface enhanced Raman spectroscopy (SERS) combined with a rapid pretreatment technique was used to determine sulfonamide antibiotics residue in swine urine. The results showed that the treatment with specific dosages of adsorbents (PSA, C-18, GCB) was an excellent approach for rapidly detecting the sulfonamide antibiotics residue. Qualitative and quantitative assessment of sulfadiazine and sulfathiazole was achieved by selecting specific Raman characteristic peaks. The study demonstrated the potential of SERS coupled with a quick, easy, cheap, effective, rugged, and safe (QuEChERS) method for monitoring the quality and safety of sulfonamide antibiotics residue in swine urine.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
Miao Yu, Qihang Tian, Guangyuan He, Kaimin Cui, Jihong Zhang
Summary: Surface-enhanced Raman scattering (SERS) is a novel method for low concentration molecular detection, and tapered fiber SERS probes based on silver nanocubes exhibit high sensitivity. These probes can be used for both qualitative and quantitative analysis, with an optimal cone angle of 8.3 degrees.
ADVANCED FIBER MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yanjun Yang, Chunyuan Song, Jingjing Zhang, Jie Chao, Hoang Mai Luong, Yiping Zhao, Lianhui Wang
Summary: This article introduces a surface-enhanced Raman scattering (SERS) sensor based on a functionalized multiple-armed tetrahedral DNA nanostructure, which is capable of detecting multiple nucleic acid and protein biomarkers related to lung cancer and has enhanced sensitivity. The sensor achieves enhanced Raman signals through DNA self-assembled gold nanoparticle clusters in multiplex detections.
Article
Chemistry, Analytical
Yanjun Yang, Jackelyn Murray, James Haverstick, Ralph A. Tripp, Yiping Zhao
Summary: The researchers developed a rapid coronavirus detection method using a functionalized silver nanotriangle array localized surface plasmon resonance sensor. The sensor shows high sensitivity and specificity in detecting SARS-CoV-2 infection, and the detection time is less than 20 minutes.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Physics, Applied
Nima Karimitari, Bin Ai, Yiping Zhao
Summary: A detailed analysis was conducted on the Born-Kuhn model for two coupled oscillators and compared to the chiral optical properties of the corner-stacked plasmonic nanorods (CSPNs). The study found that the Born-Kuhn model, based on normalized coupling constant and damping constant, could accurately predict the chiral optical response of CSPNs.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Bin Ai, Yujing Sun, Yiping Zhao
Summary: This review provides an overview of plasmonic hydrogen sensors (PHS) based on nanostructures. PHS offer high sensitivity, fast response speed, miniaturization, and high-degree of integration. The review discusses the working principle, sensing properties, and the effects of resonance mode, configuration, material, and structure on the sensing performances. It also summarizes the advantages and disadvantages of different types of plasmonic nanostructures and proposes potential development directions. The aim of this review is to clarify current strategies for PHS and provide a comprehensive understanding of their working principle to inspire innovative designs and execution of advanced hydrogen sensors.
Article
Nanoscience & Nanotechnology
Yanfeng Wang, Shen Ao, Fei Yang, Zhengjun Zhang, Yiping Zhao
Summary: By independently tuning the structure parameters of the nanorods in nanohole arrays, a mode splitting phenomenon can be introduced, which improves the performance of plasmonic sensors.
ACS APPLIED NANO MATERIALS
(2022)
Article
Biophysics
Nicholas Filla, Yiping Zhao, Xianqiao Wang
Summary: In this paper, a phenomenological, bilinear, force-strain model is derived to accurately reproduce the fibrin fiber force-strain curve. The model assumes that the initial linear response is due to entropic extension of polypeptide chains, and the final linear response is due to enthalpic extension of protofibrils. The model provides strong support to a previously proposed deformation mechanism and offers a rigorous tool for analyzing fibrin fiber force-strain data and simulating fibrin fibers in tension.
BIOMECHANICS AND MODELING IN MECHANOBIOLOGY
(2023)
Article
Physics, Applied
Andrei Galiautdinov, Yiping Zhao
Summary: During the operation of a core-shell nanoparticle based localized surface plasmon resonance (LSPR) sensor, target molecules penetrate into the shell layer, resulting in nonuniform distribution of molecules or reactants. This phenomenon is observed in composition graded plasmonic particles, which exhibit different LSPR characteristics compared to uniform core-shell particles. A perturbation theory is developed to predict the LSPR properties of composition graded plasmonic particles, considering the effects of composition gradient caused by metal hydride, dielectric, and effective medium. The results demonstrate the tunability of LSPR peak location and amplitude by different configurations of the composition gradient. These findings are crucial for understanding the sensing performance of composition graded plasmonic particles and can be applied to other composition graded structures.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Yanjun Yang, Hao Li, Les Jones, Jackelyn Murray, James Haverstick, Hemant K. Naikare, Yung-Yi C. Mosley, Ralph A. Tripp, Bin Ai, Yiping Zhao
Summary: A rapid and cost-effective method for detecting SARS-CoV-2 infection has been developed using a deep learning algorithm. The method utilizes a DNA-functionalized AgNR array SERS sensor to rapidly detect SARS-CoV-2 RNA in human nasopharyngeal swab specimens. The detection process can be completed within 25 minutes and achieves high accuracy in classifying positive and negative samples. This method shows promise as a potential rapid point-of-care COVID-19 diagnostic platform.
Article
Nanoscience & Nanotechnology
Yanfeng Wang, Dexian Ye, Fengtong Zhao, Zhengjun Zhang, Yiping Zhao
Summary: Shadow sphere lithography is a powerful method for fabricating nanostructures and has potential applications in producing plasmonic photonic crystals and metamaterials. This study shows that Monte Carlo simulation is effective in predicting the structure details and plasmonic properties, providing guidance for the design of optical applications based on shadow sphere lithography.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Mona Asadinamin, Aleksandar Zivkovic, Susanne Ullrich, Henning Meyer, Yiping Zhao
Summary: The study provides insights into the charge dynamics of a CuO thin film using transient absorption spectroscopy, revealing the role of different excitation energies in the photocatalytic process. This information is crucial for designing and optimizing materials for renewable energy applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Hoang Mai Luong, Tu Anh Ngo, Minh Thien Pham, Yiping Zhao, George Keefe Larsen, Thuc-Quyen Nguyen, Tho Duc Nguyen
Summary: Magnetism in curved nano-geometries has led to the exploration of a hexagonally-packed array of magnetic nano-caps as a sensing element for the spark-free magnetic-circular-dichroism (MCD) H-2 sensor. The MCD H-2 sensor outperforms current optical sensors and meets the performance targets set by the US Department of Energy. The sensor exhibits fast response time, high selectivity, and low limit of detection.
Article
Chemistry, Multidisciplinary
Yilong Ju, Oara Neumann, Mary Bajomo, Yiping Zhao, Peter Nordlander, Naomi J. Halas, Ankit Patel
Summary: This article presents a machine learning algorithm that can identify chemicals by matching their SERS spectra to a standard Raman spectral library. The algorithm uses a facial recognition-like approach for spectral recognition and quantifies the degree of similarity to a Raman spectrum using a metric called Characteristic Peak Similarity (CaPSim). The analysis shows that CaPSim outperforms existing spectral matching algorithms in terms of accuracy. This machine learning-based approach could greatly facilitate the spectroscopic identification of molecules in fieldable SERS applications.
Article
Chemistry, Multidisciplinary
Shahab Razavi, Yiping Zhao
Summary: This study demonstrates that a hybridized plasmonic mode in a compound nanohole structure can be described as a quasi-dipole oscillator. By introducing two nanorods into a nanohole, these two quasi-dipoles can couple and hybridize, resulting in additional transmission peaks. The intensities and separations of these peaks can be controlled by adjusting the incident polarization and modifying the nanorod length. This concept can be extended to predict the behavior of more complex compound configurations, allowing for precise engineering of transmission peaks.
Article
Chemistry, Multidisciplinary
Yiping Zhao
Summary: This paper presents a comprehensive theoretical framework for understanding surface-enhanced Raman scattering (SERS) measurements, focusing on the principles of electromagnetic enhancement. The study investigates different types of SERS substrates and their interactions with molecules, providing explanations for various phenomena observed in SERS measurements. The findings offer valuable guidance for optimizing SERS substrate design and improving the accuracy of SERS detection.
Article
Chemistry, Multidisciplinary
Yanjun Yang, Beibei Xu, James Haverstick, Nabil Ibtehaz, Artur Muszynski, Xianyan Chen, Muhammad E. H. Chowdhury, Susu M. Zughaier, Yiping Zhao
Summary: The study successfully differentiated and classified bacterial endotoxins using surface enhanced Raman scattering spectra, achieving 100% accuracy with the RamanNet algorithm. This approach has the potential for rapid medical diagnosis and therapeutic decision-making.
Article
Chemistry, Analytical
Qian Wu, Li Tian, Xiangyu Shan, Huiling Li, Chao Li, Juan Lu
Summary: A novel ECL sensor was developed by modifying Fe3CuO4-Ru(bpy)3+ and GO-CdS@ZnS on the electrode for the detection of permethrin. The sensor exhibited high sensitivity and a wide detection range.
Article
Chemistry, Analytical
Tingting Gong, Lei Liao, Bingying Jiang, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescent biosensing system for high sensitivity detection of MT was established using a new Ag+-stabilized DNA triplex probe (Ag+-SDTP) combined with catalytic hairpin assembly (CHA) and CRISPR/Cas12a signal enhancements. The sensing method is able to selectively detect MT from other non-specific molecules and can achieve low level detection of MT in diluted human serums, demonstrating its potential for monitoring disease-specific MT biomarker at trace levels.
Article
Chemistry, Analytical
Estrella Sanz Rodriguez, Kyra Wood, Paul R. Haddad, Brett Paull
Summary: This study presents a simple, rapid, and reliable method for determining boron in aqueous solutions using suppressed ion chromatography coupled to electrospray ionisation-triple quadrupole mass spectrometry. The method achieved a low limit of detection and demonstrated excellent analytical performance.
Article
Chemistry, Analytical
Aline Cournut, Paul Moustiez, Yannick Coffinier, Christine Enjalbal, Claudia Bich
Summary: Alzheimer's disease is a major cause of senile dementia and is characterized by the aggregation of neurofibrillary tangles and amyloid plaques in the brain. The A beta 1-42 peptide is considered the primary cause of neurotoxicity due to its insolubility and subsequent aggregation. A beta 1-42 and A beta 1-40 have been identified as relevant biomarkers for AD diagnosis, and SurfaceAssisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) was used to monitor the A beta 1-42/A beta 1-40 ratio without prior sample treatment.
Article
Chemistry, Analytical
Dotse Selali Chormey, Buse Tugba Zaman, Tulay Borahan Kustanto, Sezin Erarpat Bodur, Suleyman Bodur, Elif Ozturk Er, Sezgin Bakirdere
Summary: This review provides an overview of the harmful effects of endocrine disrupting chemicals (EDCs) on human health and introduces the methods for analyzing EDCs. Recent research has focused on using green chemicals, such as deep eutectic solvents (DESs), for microextraction to ensure environmental safety.
Article
Chemistry, Analytical
Yan Zhang, Renfeng Xu, Jingjing Wu, Zhenghong Zhang, Yuhuang Wang, Hongqin Yang, Sheng Zhang
Summary: This study visualized the pore-like structures in prostate cancer cell membranes after treatment with the anticancer drug paclitaxel, demonstrating its mechanism of action related to oxidative damage.
Article
Chemistry, Analytical
Chihong Ma, Qin Zhou, Jinjin Shi, Hua Gao, Di Huang, Huimin Xue, Han Wang, Zhenzhong Zhang, Sen Yang, Junli Zhang, Kaixiang Zhang
Summary: We developed a CRISPR-empowered electrochemical biosensor, named PER-E-CRISPR, for amplification-free and sensitive detection of miR-21. The biosensor combines the advantages of CRISPR/Cas13a and primer exchange reaction (PER) for target amplification. Under optimized conditions, the PER-E-CRISPR assay exhibits a linear range from 10-13 to 10-7 M and a limit of detection of 30.2 fM. The biosensor shows excellent performance in actual plasma, indicating promising prospects for miRNA detection in molecular diagnosis.
Article
Chemistry, Analytical
Gang Liang, Jie Zhao, Yufei Gao, Tao Xie, Jianhui Zhen, Ligang Pan, Wenwen Gong
Summary: Molecular docking (MD) analysis is widely used for studying the interaction between aptamers and small molecules. This study established steady-state aptamers of tertiary structures (SATS) using specific aptamers of tetracycline antibiotics as docking models. Molecular docking results revealed multiple binding sites in the SATS of aptamers, with significant variations in binding free energy (BFE) and docking score (DS). The study also proposed a method for MD analysis based on SATS, providing insights into binding mode and predicting binding sites.
Article
Chemistry, Analytical
Yixuan Xu, Changchang Teng, Huiping Dang, Dalong Yin, Lifeng Yan
Summary: Stable organic radical molecules with high NIR fluorescence quantum efficiency have been synthesized and encapsulated into nanoparticles, which show great potential for both photodynamic therapy (PDT) and photothermal therapy (PTT) of tumors.
Article
Chemistry, Analytical
Yu Su, Dandan Yang, Yanjie Wang, Jie Ding, Lan Ding, Daqian Song
Summary: In this study, a highly selective molecularly imprinted polymer Cu-MIPs@CS was designed and synthesized for bisphenol A (BPA). Cu-MIPs@CS showed significantly enhanced imprinting factor and selective factor towards BPA compared to MIPs@CS. It also exhibited superior discrimination ability between BPA and its structural analogue. Additionally, Cu-MIPs@CS were successfully applied as a solid phase extraction adsorbent for the determination of BPA in drinking water samples.
Article
Chemistry, Analytical
Yi Qiao, Qiongdan Zhang, Yukun He, Tianguang Cheng, Jing Tu
Summary: Single cell heterogeneity plays an important role in many biological phenomena, and distinguishing cells with specific mutations is beneficial for clinical diagnosis and drug screening. This study introduces a gel plate platform that can distinguish cell types based on their phenotypes, with low equipment requirement. The gel platform has potential in point-of-care circumstances and single-cell stimulation responses that prioritize efficiency and simplicity.
Article
Chemistry, Analytical
Chengke Wang, Shuyang Sun, Ping Wang, Huawei Zhao, Wenling Li
Summary: The food safety of aquatic products is a global concern. Nanotechnology-based analyses have advantages in the detection of bacteria, metal ions, and small molecule contaminants. This review summarizes the recent advances in biosensing strategies for aquatic products and highlights the application of nanomaterials, lateral flow-based biosensors, surface-enhanced Raman scattering, microfluidic chips, and molecular imprinting technologies.
Article
Chemistry, Analytical
Liping Zhu, Zeng Tang, Xuemei Zhang, Li Zhu, Tian Meng, Linying Yu, Ting Xiao, Shasha Lu, Xiaoli Xiong, Xiurong Yang
Summary: A sensitive off-on electrochemiluminescence DNA sensor was developed using Exo III-assisted cascade amplification system. The sensor achieved high selectivity and ultra-high sensitivity in detecting target DNA by utilizing ECL and SPR effects. This study provides a new perspective for designing highly sensitive and programmable ECL biosensors.
Article
Chemistry, Analytical
Tong Li, Mengxu Sun, Suping Xia, Ting Huang, Rong-Tian Li, Chunrong Li, Zong Dai, Jin-Xiang Chen, Jun Chen, Nuan Jia
Summary: Here, we developed a binary system based on DNA tetrahedron and fluorogenic RNA aptamers for highly specific and label-free mRNA imaging in living cells. This system achieved high specificity label-free detection of nucleic acids with a detection limit of 1.34 nM. The method has potential applications in early disease diagnosis and new drug development.
Article
Chemistry, Analytical
Yao Zhao, Shu Zhang, Wang Yao, Yuxuan Zhu, Jing Qian, Juan Yang, Nianjun Yang
Summary: A new hierarchical nanostructured composite with high conductivity and catalytic activity is synthesized. The sensor exhibits significant catalytic effect and high sensitivity for monitoring the environmental endocrine disruptor bisphenol A (BPA).
