Review
Food Science & Technology
Guoyong Jiang, Yu Li, Jinghan Liu, Ling Liu, Fuwei Pi
Summary: Aptamer sensors, based on molecular interactions, have been extensively studied for their ability to specifically identify food contaminants. The integration of surface-enhanced Raman spectroscopy with aptamers offers advantages in sensitivity and speed. These sensors have applications in detecting biological and chemical contamination in food.
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
(2022)
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)
Review
Chemistry, Analytical
Marlen Petersen, Zhilong Yu, Xiaonan Lu
Summary: Raman spectroscopy plays a crucial role in food safety, offering non-destructive, sensitive, and rapid assessment. Recent advancements have improved detection capabilities of food contaminants, enhancing its applications in the field of food safety.
Article
Chemistry, Physical
Han-Kyu Choi, Sang-Min Park, Jeeyoon Jeong, Hankyul Lee, Gyu Jin Yeon, Dai-Sik Kim, Zee Hwan Kim
Summary: In this study, a simple photolithographic method was demonstrated to generate highly sensitive SERS hot spot structures at desired positions. The solid-state dewetting of an Ag thin film using a continuous-wave laser resulted in the formation of closely packed assemblies of hemispherical Ag nanoislands with substantial plasmonic-field enhancement. These hot spot structures can be utilized as position-specific chemical-sensing elements in integrated analytical devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Analytical
Xuesong Yan, Wenfeng Zhu, Yibing Wang, Yiran Wang, Dexuan Kong, Min Li
Summary: The sensitivity of a coffee ring in detecting trace analytes based on surface-enhanced Raman scattering (SERS) was improved in this study. Gold nanoparticles with diameters around 40 nm were synthesized through the sodium citrate reduction method, and rhodamine 6G (R6G) was used as a probe to evaluate the performance of the fabricated coffee rings. The results showed that the water-washed gold nanoparticles formed a more orderly and regular coffee ring morphology with better SERS properties than the unwashed ones. Moreover, both the concentration and amount of gold nanoparticles affected the SERS performance. Using the optimized coffee ring as a SERS substrate, trace R6G with a concentration of 5 x 10(-8) M was detected. This sensing platform could detect aflatoxin B1 (AFB1) down to 5 x 10(-7) M and performed well in real-sample testing.
Review
Food Science & Technology
Meng-Lei Xu, Yu Gao, Xiao-Xia Han, Bing Zhao
Summary: Innovative applications of SERS for food safety and quality analysis have gained attention. SERS offers ultrasensitive detection and simple protocols for analyzing composition and structure information. It has potential in detecting contaminants, tracing food samples, and ensuring food safety during the COVID-19 pandemic.
Review
Agriculture, Multidisciplinary
Azadeh Nilghaz, Seyed Mahdi Mousavi, Amir Amiri, Junfei Tian, Rong Cao, Xungai Wang
Summary: This article investigates the impact of different substrates on SERS technology in quantitative food safety and quality analysis. The fundamentals, substrate designs, and applications of SERS are discussed, followed by a critical review of its recent progress in screening and detecting chemical and biological contaminants in food samples. The future trends and practical techniques for rapid and low-cost food analysis are also explored.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Review
Engineering, Electrical & Electronic
Nguyen Tran Truc Phuong, Le Hong Tho, Tan Tai Nguyen, Nguyen Nhat Nam, Kieu The Loan Trinh
Summary: Mxenes, a type of two-dimensional transition metal carbides, nitrides, and carbonitrides, exhibit excellent properties such as large specific surface area and good electrical conductivity. Recent studies have shown that Mxenes have great potential in optical sensing technology, particularly in surface plasmon resonance (SPR) sensors. This review presents the latest advances in 2D MXenes and their composites for SPR/LSPR-based sensing, covering fabrication methods, properties, and potential applications in optical sensing systems.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Spectroscopy
Tong Zhang, Shunhua Zhu, Jingjing Wang, Zhiying Liu, Mingxin Wang, Shibao Li, Qingli Huang
Summary: Fabricating sensitive, stable and low-cost nanomaterials for glucose detection is crucial for disease diagnosis and monitoring. In this study, a nanocomposite (polypyrrole bridging GO@Au@MnO2) was developed as a novel surface-enhanced Raman scattering (SERS) nanoprobe for quantitative glucose detection in trace serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Food Science & Technology
Chia-Chi Huang, Zi-Han Hsu, Yen-Shi Lai
Summary: Food-mediated transmission of viral pathogens is a concern in food safety and public health. Raman spectroscopy provides valuable information for detecting viruses, with advancements in sensitivity and techniques like confocal Raman, surface-enhanced Raman scattering, and coherent anti-Stokes Raman scattering. The method allows rapid and minimal sample preparation for point-of-care testing, but challenges remain in its further development for food safety testing.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Yunfan Chen, Qi An, Kaixuan Teng, Chao Liu, Fuwei Sun, Guangtao Li
Summary: This report summarizes the recent developments of surface-enhanced Raman scattering (SERS) in biomedical detection and its promising applications in cancer detection, virus or bacterial infection detection, miscarriage spotting, neurological disease screening, etc. The first part discusses the frequently used SERS substrate component and structures, the second part reports on the detection strategies for nucleic acids, proteins, bacteria, and virus, the third part summarizes their promising applications in clinical detection in a variety of illnesses, and the forth part reports on recent development of SERS in combination with other analytical techniques. The special merits, challenges, and perspectives are discussed in both introduction and conclusion sections.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
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)
Article
Biotechnology & Applied Microbiology
Zhouyang Xiang, Mengyun He, Li Li, Jamshed Bobokalonov, Abduvali Dzhonmurodov, Xingxiang Ji
Summary: In this study, a paper-based Au-Ag bimetallic SERS substrate was developed using cellulose fiber/paper-based technology. The substrate, anchored by natural macromolecule-xylan, showed high Raman enhancement performance and reproducibility. It can be used for rapid detection of agricultural product contaminants and pesticide residues on fruit surfaces.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Review
Food Science & Technology
Chao Liu, Di Xu, Xuan Dong, Qing Huang
Summary: Surface-enhanced Raman scattering/spectroscopy (SERS) is widely used as a non-destructive and highly sensitive analytical tool in various fields, including agriculture. This review provides an overview of different strategies for fabricating SERS substrates and discusses their applications and effective solutions to practical problems in agriculture. SERS-based sensors offer convenience and unique advantages in sample preparation and instrument operation, and researchers are striving to develop advanced SERS sensing techniques to meet the needs of the agricultural sector.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2022)
Review
Chemistry, Physical
Saeideh Mehmandoust, Vahid Eskandari, Elaheh Karooby
Summary: This review paper evaluates the latest developments in using DNA origami structures for the creation of SERS-based sensors. It introduces the fundamentals of SERS, plasmonic enhancement processes, and nanofabrication techniques. The advantages of DNA origami in constructing plasmonic nanoparticles and creating SERS hotspots for analytical and medicinal purposes are discussed. Potential paths for future research and challenges facing DNA origami-based SERS sensors are also explored.
Article
Chemistry, Analytical
Luiza A. Wasiewska, Ian Seymour, Bernardo Patella, Rosalinda Inguanta, Catherine M. Burgess, Geraldine Duffy, Alan O'Riordan
Summary: In this study, an electrochemical sensor was developed for silver ion detection in tap water using anodic sweep voltammetry with in-situ pH control. The sensor, enabled by closely spaced interdigitated electrode arrays, allowed for rapid and accurate detection of silver ions in tap water through a combination of complexation with chloride ions and in-situ pH control.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
B. Patella, R. R. Russo, A. O'Riordan, G. Aiello, C. Sunseri, R. Inguanta
Summary: The study introduced a nanostructured sensor based on copper nanowires, with rapid response time and easy in-field usability, for monitoring nitrate ions in water.
Article
Chemistry, Multidisciplinary
Ian Seymour, Benjamin O'Sullivan, Pierre Lovera, James F. Rohan, Alan O'Riordan
Summary: The study utilized in-situ pH control to eliminate oxygen interference for monochloramine sensors by converting it to dichloramine, resulting in improved accuracy and efficiency of analysis.
Article
Chemistry, Analytical
Robert Daly, Tarun Narayan, Han Shao, Alan O'Riordan, Pierre Lovera
Summary: The study introduces a novel platinum-based microband electrode array for trace detection of copper, achieving a detection limit of 0.8 µg/L. By controlling the pH at the surface of the sensors, the detection limit for copper was lowered, allowing for detection of standard copper solutions down to 5 µg/L (ppb) without the need for reagents. This reagent-free method opens up possibilities for autonomous, in situ monitoring of pollutants in water bodies.
Article
Chemistry, Analytical
Julia Madden, Colm Barrett, Fathima R. Laffir, Michael Thompson, Paul Galvin, Alan O' Riordan
Summary: This study focused on the microfabrication and characterization of gold microband electrodes on silicon using standard methods. A two-step electrodeposition process was applied to successfully incorporate glucose oxidase onto the electrodes, resulting in linear glucose detection. Utilizing various microscopy techniques, the biosensor exhibited promising performance in buffer-based solutions.
Article
Chemistry, Analytical
Francesca Mazzara, Bernardo Patella, Chiara D'Agostino, Maria Giuseppina Bruno, Sonia Carbone, Francesco Lopresti, Giuseppe Aiello, Claudia Torino, Antonio Vilasi, Alan O'Riordan, Rosalinda Inguanta
Summary: This study focuses on developing electrochemical sensors for detecting sweat pH by modifying electronic substrate and depositing polyaniline thin films. The sensors showed good performance in the pH range of 2 to 8, with a sensitivity of 62.3 mV/pH and reproducibility of 3.8%.Tests with interference ions demonstrated the sensors' selectivity, and real sweat sample analysis proved excellent agreement with a commercial pH meter.
Article
Chemistry, Analytical
Yuqing Yang, Alan O'Riordan, Pierre Lovera
Summary: This study demonstrates a rapid method for direct monitoring of the harmful pesticide 2,4-D in water without sample pre-treatment. Large-area, high-density, and homogeneous SERS substrates were synthesized using an electrochemical method. The Ag-GA SERS sensor showed a linear response towards 2,4-D detection and accurately detected the pesticide in different water samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Francesco Lopresti, Bernardo Patella, Vito Divita, Claudio Zanca, Luigi Botta, Norbert Radacsi, Alan O'Riordan, Giuseppe Aiello, Maiwenn Kersaudy-Kerhoas, Rosalinda Inguanta, Vincenzo La Carrubba
Summary: A green wearable sensor for sweat absorption and chloride sensing is presented in this study. The sensor, made from polylactic acid and upcycled compact discs, showed sensitive and reproducible detection of chloride ions in sweat samples. The results demonstrate the feasibility of applying this integrated sweat sensor directly on human skin.
Article
Electrochemistry
Bernardo Patella, Tarun Narayan, Benjamin O'Sullivan, Robert Daly, Claudio Zanca, Pierre Lovera, Rosalinda Inguanta, Alan O'Riordan
Summary: This article describes the use of an in situ pH control technique in electrochemical sensors for detecting mercury and copper in neutral solutions. The sensors consist of two parallel gold interdigitated microband electrodes that can be independently polarized. By biasing one electrode, water electrolysis is initiated, resulting in the production of H+ ions that decrease the pH at the other sensing electrode. This pH decrease allows for electrodeposition and stripping of metals without acidifying the entire test solution. The sensors have a linear range of 5-100 ppb for copper and 1-75 ppb for mercury, with high sensitivity and good reproducibility.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Yuqing Yang, Luiza Adela Wasiewska, Catherine M. Burgess, Geraldine Duffy, Pierre Lovera, Alan O'Riordan
Summary: In this research, a selective, cost-efficient, and highly sensitive Ag nanostructure Surface Enhanced Raman Spectroscopy (SERS) sensor was developed for rapid detection of target ss-DNA in STEC. The sensor showed good selectivity, linearity, and sensitivity towards the target DNA, and has potential for point-of-use detection without the need for DNA amplification.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Proceedings Paper
Computer Science, Artificial Intelligence
Amlan Nag, Tarun Narayan, Alan O'Riordan, Pierre Lovera, Srinjoy Mitra
Summary: This paper presents a time domain analog front-end system for real time water quality monitoring, capable of detecting dissolved oxygen concentration and temperature simultaneously and transmitting over a single ISM frequency band. The system demonstrates high linearity and low noise levels.
2022 20TH IEEE INTERREGIONAL NEWCAS CONFERENCE (NEWCAS)
(2022)
Article
Engineering, Electrical & Electronic
Aidan Murphy, Ian Seymour, James Rohan, Alan O'Riordan, Ivan O'Connell
Summary: This work presents a flexible and portable data acquisition system for nano and ultra-micro scale electrochemical sensors, which can perform various voltammetric tests. It interfaces to a smartphone, runs on a rechargeable battery, and is designed to be fully portable. By using commercial components, this system aims to lower the barrier to entry for emerging portable electrochemical sensing technologies at micro and nano scale.
IEEE SENSORS JOURNAL
(2021)
