Article
Chemistry, Analytical
Di Liu, Huimin Gao, Wenji Jiang, Su Yan, Hao Liu, Junjie Chen, Sisi Wen, Wei Zhang, Xu Wang, Bing Zhao, Wei Song
Summary: In this study, three-dimensional Ag aerogel-supported Hg single-atom catalysts were used as an efficient SERS substrate for monitoring enhanced oxidase-like reactions. The effect of Hg2+ concentrations on the SERS properties of 3D Hg/Ag aerogel networks was investigated, and an optimized addition of Hg2+ resulted in specific enhancement. The formation of Ag-supported Hg SACs was confirmed using HAADF-STEM imaging and XPS measurement, and the oxidase-like catalytic mechanism of Hg/Ag SACs was revealed using DFT. This research provides a mild synthetic strategy for fabricating Ag aerogel-supported Hg single atoms with promising prospects in various catalytic fields.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Shi Xuan Leong, Charlynn Sher Lin Koh, Howard Yi Fan Sim, Yih Hong Lee, Xuemei Han, Gia Chuong Phan-Quang, Xing Yi Ling
Summary: The study successfully achieves direct, label-free SERS sensing of biologically important enantiomers by synergizing asymmetric nanoporous gold (NPG) nanoparticles with electrochemical-SERS. This strategy is versatile and can be readily extended to detect various enantiomers, and allows for multiplex quantification of enantiomeric ratios with excellent predictive performance. The research offers a paradigm shift in achieving label-free chiral SERS sensing of various enantiomers.
Review
Chemistry, Analytical
Francesco Dell'Olio
Summary: Recent advancements in liquid biopsy and oncological imaging have greatly improved cancer care through the application of SERS technology, which enhances detection sensitivity and clinical utility in the field.
Article
Chemistry, Analytical
Weixing Gao, Wanli Fan, Dongmei Wang, Ji Sun, Yong Li, Changyu Tang, Meikun Fan
Summary: In this study, acute toxicity of environmental water samples was determined for the first time using SERS approach based on the reaction between E. coli and BQ. Several key factors were explored and the system was applied for toxicity evaluation of Cu2+. The study provides a promising SERS method for assessing acute toxicity in water bodies.
Article
Chemistry, Analytical
W. Cheuquepan, S. Hernandez, M. Perez-Estebanez, L. Romay, A. Heras, A. Colina
Summary: Electrochemistry can be used to generate SERS substrates, utilizing the plasmonic properties of nanos-tructures and the chemical mechanism, with time-resolved Raman spectroelectrochemistry providing valuable information. Comparing Au and Ag metals for folic acid detection in drugs, it was found that Ag SERS substrates outperformed Au SERS substrates in complex samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Spectroscopy
Xiaoyu Cui, Jinming Li, Yuting Li, Mingyu Liu, Jinglong Qiao, Dong Wang, Hui Cao, Wanli He, Yun Feng, Zhou Yang
Summary: A sensitive and stable GMXeP SERS substrate has been designed for detecting glucose concentration in tears of diabetic patients. The study demonstrates its suitability for sensitive and noninvasive detection of blood glucose.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Review
Chemistry, Physical
Katsuyoshi Ikeda
Summary: SERS spectroscopy is a versatile tool for studying surface phenomena under electrochemical or photoelectrochemical conditions. The recent advancements in optical filter technology have extended the frequency range covered by a conventional single-stage Raman spectrometer into the terahertz or far-infrared range. The frequency-extended SERS provides complementary mass and chemical information simultaneously, allowing for a better understanding of heterogeneous reactions at the molecular scale.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
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
Electrochemistry
Sheila Hernandez, Juan Perales-Rondon, Aranzazu Heras, Alvaro Colina
Summary: EC-SOERS is a new phenomenon that enhances the Raman signal during the oxidation of a metal surface. Studies show that carbonyl and carboxyl groups are necessary to observe this phenomenon, with a delocated charge being important factor. Evaluating the enhancement factors for different molecules with highly delocated charge and a carboxyl group sheds more light on the interaction of molecules with the electrochemically generated SOERS substrates.
ELECTROCHIMICA ACTA
(2021)
Review
Biochemistry & Molecular Biology
Antonio Sasso, Angela Capaccio, Giulia Rusciano
Summary: This review focuses on the recent studies conducted by our group in the past decade, where novel nanofabrication techniques were successfully applied to SERS and TERS experiments for studying bio-systems and molecular species of environmental interest.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Shiyu Sun, Jingying Zheng, Ruihao Sun, Dan Wang, Guanliang Sun, Xingshuang Zhang, Hongyu Gong, Yong Li, Meng Gao, Dongwei Li, Guanchen Xu, Xiu Liang
Summary: Defect-containing monolayer MoS2 with abundant density of states and effective photoinduced charge transfer resonance becomes a promising and versatile substrate capable of detecting a wide range of dye molecules and enhancing Raman enhancement.
Article
Materials Science, Multidisciplinary
Lulu Ye, Guanyu Zhang, Hai Lin, Yanglizhi Li, Qinyun Liu, Zhongfan Liu, Qihuang Gong, Guowei Lu
Summary: This study demonstrates a method of characterizing chiral optical fields within nanogaps by using chiral plasmonic antennas to enhance Raman spectroscopy signals in graphene. The degree of chirality depends on antenna configuration and the excitation laser wavelength.
ADVANCED OPTICAL MATERIALS
(2023)
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, 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, Multidisciplinary
Lei Ouyang, Tobias Meyer-Zedler, Kel-Meng See, Wei-Liang Chen, Fan-Cheng Lin, Denis Akimov, Sadaf Ehtesabi, Martin Richter, Michael Schmitt, Yu-Ming Chang, Stefanie Grafe, Jurgen Popp, Jer-Shing Huang
Summary: This study investigates the enhancement effect of plasmonic gratings in nonlinear surface-enhanced coherent anti-Stokes Raman scattering (SECARS) using the platform of plasmonic Doppler grating (PDG). The PDGs spatially separate the input and output enhancement, allowing for observation and comparison of overall enhancement from different combinations of individual input and output beams. The results indicate that enhancement in the pump and anti-Stokes beams plays a more critical role in the overall enhancement than that in the Stokes beam.
