Article
Biophysics
Araz Norouz Dizaji, Nihal Simsek Ozek, Asli Yilmaz, Ferhunde Aysin, Mehmet Yilmaz
Summary: Infrared spectroscopy is a powerful method for the identification of chemical and biological molecules, but the low absorbance of biological molecules has been a challenge. This study introduced the use of 3D anisotropic gold nanorod arrays as a highly active SEIRA platform for bacterial detection, which showed successful results.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
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
Optics
Zekun Liao, Xiaofeng Hu, Jiao Chu, Yu Wu, Te Ji, Huachun Zhu, Weiwei Peng, Jie Wang, Hongwei Zhao, Min Chen
Summary: This paper proposes a novel and effective SERS-active substrate based on large-scale 3D Si hierarchical nanoarrays and homogeneous Au nanoparticles. The umbrella-frame structure achieved excellent SERS performance with high sensitivity and spatial uniformity. The proposed substrate can be erased and reused multiple times by plasma cleaning and exhibits excellent recyclability and stability for robust SERS activity.
Article
Chemistry, Analytical
Najwan Albarghouthi, Presley MacMillan, Christa L. Brosseau
Summary: This study focused on optimizing SERS sensors constructed using gold nanorod arrays for the sensitive detection of atrazine. The effect of relative humidity on the self-assembly of gold nanorods into arrays was explored, and para-aminothiophenol was used as a SERS probe to assess SERS performance, ultimately highlighting the detection of atrazine. This work is the first to explore relative humidity as an optimization strategy for controlled alignment of gold nanorods for SERS analysis of atrazine.
Article
Nanoscience & Nanotechnology
Tianran Wang, Weiye Gao, Chushu Zhu, Pengxing Sha, Yulie Wu, Xuezhong Wu, Peitao Dong
Summary: In this study, Au nanorod arrays (AuNRAs) were developed using two-dimensional (2D) graphene oxide (GO)-supported Au nanoparticles (AuNPs). The coupling performances and Raman performance of AuNRAs-GO/AuNPs were studied, and the optimized substrate achieved sensitivity and repeatability for the detection of melamine.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Ying Luo, Qian Zhang, Qin Wang, Zhenglin Liu, Lingfeng Duan, Wenxi Cao, Zijin Cao, Caiqin Han
Summary: In this study, gold nanoparticles-modified silver nanorod arrays were used as surface-enhanced Raman spectroscopy (SERS) substrates. The coffee ring effect of the arrays was explored as a preconcentration method for target analytes. Methyl viologen, a toxic herbicide, was successfully determined using this method. The results suggest that the coffee ring on the arrays provides a promising way for monitoring environmental pollution and food safety caused by pesticides.
Article
Nanoscience & Nanotechnology
Yanlin Li, Wenyuan Duan, Jian Wei
Summary: The study synthesized CoFe2O4/Ag nanostructures as SERS substrates with high sensitivity, good stability, and excellent magnetic response for efficient separation and reusability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Xinkuo Zhang, Yalong Li, Zehong Lei, Yibin Yang, Lili Tao, Zhaoqiang Zheng, Xing Feng, Ji Zeng, Yu Zhao
Summary: A composite structure prepared by reducing Au nanoparticles on the surface of two-dimensional MoWS2 ternary alloys was used for label-free and highly sensitive detection of adenine based on the surface-enhanced Raman spectroscopy (SERS) technique. The AuNP/MoWS2 composite successfully detected rhodamine 6G molecules with a limit of detection (LOD) of 10(-11) M, as well as adenine with LODs of 10(-9) M in aqueous solution and 10(-8) M in simulated urine. The hybrid SERS substrate exhibited a good linear detection range for adenine and had excellent uniformity and reliable stability, suggesting its potential for applications in biological detection and clinical diagnosis.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuancai Ge, Ying Yang, Yajie Zhu, Meiling Yuan, Liangbin Sun, Danfeng Jiang, Xiaohu Liu, Qingwen Zhang, Jinyi Zhang, Yi Wang
Summary: A hybrid substrate for surface-enhanced Raman scattering (SERS) is fabricated, which combines localized surface plasmon resonance (LSPR), charge transfer (CT) resonance, and molecular resonance. The substrate utilizes exfoliated 2D TiS2 nanosheets to accelerate CT and a concave gold array for strong electromagnetic enhancement. By adjusting the LSPR intensity near the gold layer, the substrate achieves maximum SERS enhancement. The hybrid substrate demonstrates excellent performance in detecting low concentrations of methylene blue and monitoring curcumin in serum and urine.
Article
Chemistry, Physical
Xinqiao Teng, Mengyuan Wei, Wencai Yi, Junfang Li, Meng Yin, Guangcheng Xi
Summary: A general polymerization-induced strategy is developed for the synthesis of large-area transition metal nitride (TMN) porous arrays with high specific surface area. The TiN porous arrays exhibit intense blue-light localized surface plasmon resonance and remarkable surface-enhanced Raman scattering (SERS) effects. They also show ultrahigh corrosion and oxidation resistance, suggesting the possibility of using TiN as a cheaper alternative to commercial Au substrates for effective SERS substrates.
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
Spectroscopy
M. Muthu Meenakshi, Gowri Annasamy, Mugesh Sankaranarayanan
Summary: The study proposes a highly sensitive technique for the trace amount detection of pesticidal residues in centella powder. A graphene oxide gold (GO-Au) nanocomposite coated parafilm is developed as a substrate to facilitate dual surface enhanced Raman signal. The parafilm coated with GO-Au nanocomposites shows better Raman signal enhancement and can detect chlorpyrifos down to 0.1 ppm in centella herbal powder samples. This parafilm-based GO-Au SERS substrate can be used as a screening tool in quality control of herbal product manufacturing sectors.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Peng Fei Wu, Xiao Yang Fan, Hong Yan Xi, Niu Pan, Zi Qian Shi, Ting Ting You, Yu Kun Gao, Peng Gang Yin
Summary: Gold nanorods (Au NRs)/Ti3C2Tx composites were synthesized as surface enhanced Raman scattering (SERS) substrates. The composites exhibited high sensitivity and good reproducibility for the determination of organic dyes and adenine. The detection limits for organic dyes were 1 x 10(-13), 1 x 10(-13), and 1 x 10(-12) M, and the detection limit for adenine was as low as 1 x 10(-9) M. The substrate also showed good anti-interference ability to other nucleic acids with similar structures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Peng Fei Wu, Xiao Yang Fan, Hong Yan Xi, Niu Pan, Niu Pan, Qian Shi, Ting Ting You, Yu Kun Gao, Peng Gang Yin
Summary: Gold nanorods/Ti3C2Tx composites prepared by self-assembly method show high sensitivity and good reproducibility for the detection of organic dyes, as well as excellent sensitivity and stability for adenine.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xudong Cheng, Jing Jin, Mengting Shi, Minghui Ge, Jinqi Miao, Cheng Ci, Zhenyu Xue, Peimei Dong
Summary: A facile and green synthesis strategy was used to prepare a uniform three-dimensional (3D) nanostructure as surface-enhanced Raman scattering (SERS) sensors by decorating Ag nanoparticles (AgNPs) on TiO2 nanorod arrays. The AgNPs were distributed uniformly on the surface of TiO2 nanorods, as confirmed by XPS, SEM, and TEM analyses. The 3D hybrid substrate exhibited sensitive SERS signals and excellent spatial uniformity. The results also demonstrated the promising potential of the two-step synthesis strategy for preparing 3D hybrid nanostructure substrates for SERS.
MATERIALS TODAY COMMUNICATIONS
(2023)
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
Spectroscopy
Lauren Hanna, Edgar Movsesian, Miguel Orozco, Anthony R. Bernot, Mona Asadinamin, Learnmore Shenje, Susanne Ullrich, Yiping Zhao, Nicholas Marshall, Jason A. Weeks, Michael B. Thomas, Joseph A. Teprovich, Patrick A. Ward
Summary: This study investigates the electronic and excited state effects of porphyrin functionalization by synthesizing and characterizing four meso-substituted porphyrins. The results reveal the significant influence of different para substituents (-hydroxy, -carboxy, and -nitro) on the spectral features, electrochemical behavior, and fluorescence behavior of the porphyrins.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Polymer Science
Nicholas Filla, Yiping Zhao, Xianqiao Wang
Summary: This article proposes innovative methods to address the issues in stochastic modeling of fibrous materials, such as estimating 3D fiber orientation distributions, achieving desired fiber tortuosity distributions, and dealing with fiber-fiber penetration. The methods introduced provide a mapping from 2D to 3D fiber orientation data and a means to select parameters for random walks to generate desired fiber tortuosity. These methods enhance the empirical consistency and tractability of stochastic modeling of fibrous materials.
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
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.
