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
Chemistry, Physical
Vishakha Kaushik, Hardik L. Kagdada, Dheeraj K. Singh, Sachin Pathak
Summary: The study explores hybrid SERS substrates prepared by coating silver nanoparticles on graphene layers, utilizing both chemical and electromagnetic enhancement mechanisms for remarkable SERS intensities. The experiment and theory demonstrate substantial enhancement in electronic and vibrational properties of graphene fragments through interactions with small silver clusters, leading to enhanced G-band intensity. This research contributes to the understanding of mechanisms and the development of high-performance SERS substrates for sensing applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Swapneel Thakkar, Lidia De Luca, Silvia Gaspa, Alberto Mariani, Sebastiano Garroni, Antonio Iacomini, Luigi Stagi, Plinio Innocenzi, Luca Malfatti
Summary: Graphene-enhanced Raman scattering (GERS) is a chemical-based enhancement of Raman signal. Graphene nanostructures can be used to build a platform for fast and sensitive detection of pesticides in water. The properties of graphene nanostructures affect GERS performance, with monolayers being more efficient than few-layer structures. Surface functionalization reduces GERS effect.
Article
Chemistry, Physical
Chawki Awada, Hassan H. Hammud, Hawra A. Bukhamsin, Dolayl E. Al-Hudairi, Francesco Ruffino
Summary: In this study, a new electro-chemical sensor based on functionalized gold/graphene/Cu layers was developed for highly sensitive detection of glucose. The sensor showed increased sensitivity compared to standard sensors, as confirmed by surface enhanced Raman scattering and cyclic voltammetry measurements. The presence of 4-NTP molecules on the sensor surface improved its sensitivity for glucose detection. The sensor exhibited a dynamic range of 2.0-19.6 mM to 2.0-29.1 mM and a lower detection limit of 0.5 mM for glucose.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Mateusz Kasztelan, Anna Studzinska, Grazyna Zofia Zukowska, Barbara Palys
Summary: Graphene oxide-silver nanoparticle nanohybrids were synthesized by reducing silver nitrate and graphene oxide mixture in water with ascorbic acid as the reducing agent. The concentration of ascorbic acid was varied to study its impact on the efficiency of the hybrids for SERS. Conditioned in ammonia or potassium hydroxide solutions, the composites showed different SERS properties. The sample treated with KOH exhibited the best SERS enhancement, which was correlated with the UV-Vis characteristics and surface structure of the composites.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jing-Liang Yang, Hong-Jia Wang, Zhenwei Zhu, Mu-Fei Yue, Wei-Min Yang, Xia-Guang Zhang, Xiangyu Ruan, Zhiqiang Guan, Zhi-Lin Yang, Weiwei Cai, Yuan-Fei Wu, Feng-Ru Fan, Jin-Chao Dong, Hua Zhang, Hongxing Xu, Zhong-Qun Tian, Jian-Feng Li
Summary: In this study, the transfer of hot electrons at the plasmonic metal-graphene interface was investigated using in situ SERS, revealing that hot electrons can directly penetrate graphene to trigger photocatalytic reactions. Furthermore, it was found that the efficiency of hot electron transfer rapidly decays with increasing graphene layers, and would be completely blocked after five layers of graphene. Additionally, the transfer of hot electrons can be modulated by applying an external electric field, and the efficiency is significantly improved in the presence of a monolayer of graphene under electrochemical conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Mohamed Almokhtar, Hesham Fares, Koichi Inoue, Kazuhiko Matsumoto
Summary: Raman spectra of graphene on single Ag nanoparticles exhibit promising features for quantum and imaging/sensing applications in the nanoscale regime, with the graphene acting as a Raman Thermometry and the Ag NPs serving as plasmonic nanoheaters excited by the probe laser. Thermal probing resolution can reach nanometer scale determined by the graphene area attached to the Ag NPs.
APPLIED SURFACE SCIENCE
(2021)
Article
Optics
Xi Xie, Xianyou Wang, Changjun Min, Haixiang Ma, Yunqi Yuan, Zhangyu Zhou, Yuquan Zhang, Jing Bu, Xiaocong Yuan
Summary: This study proposes a new method for accurately trapping and manipulating single or multiple particles in holographic optical surface-wave tweezers. By adjusting the optical potential wells formed by surface waves, the targeted single particle can be trapped while pushing away surrounding particles, and the particle can be dynamically controlled using a holographic tweezers beam. Different particle samples, including gold particles and biological cells, can be applied in this system. This method has significant potential applications in single-particle spectroscopy, particle sorting, and nano-assembly.
PHOTONICS RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Andreas Tsiamis, Francisco Diaz Sanchez, Niklas Hartikainen, Michael Chung, Srinjoy Mitra, Ying Chin Lim, Huey Ling Tan, Norbert Radacsi
Summary: This study presents a scalable method for developing ultrasensitive electrochemical biosensors by maximizing sensor conductivity through graphene wrapping of carbonized electrospun nanofibers. The effectiveness of the graphene wrap was determined visually and chemically, with the graphene-wrapped carbonized nanofiber electrode showing significantly improved performance. Despite inhibitive effects from the carbon glue used, the graphene-wrapped carbonized nanofibers exhibited potential for a highly conductive and inert sensing platform.
Article
Chemistry, Multidisciplinary
Han Wen, Tomoko Inose, Kenji Hirai, Taiki Akashi, Shoji Sugioka, Jiangtao Li, Wannes Peeters, Eduard Fron, Beatrice Fortuni, Yoshihiko Nakata, Susana Rocha, Shuichi Toyouchi, Yasuhiko Fujita, Hiroshi Uji-i
Summary: TERS technique using metal deposition probes has limitations in reproducibility and lifetime, and a simple gold coating method was proposed to enhance the performance of AgNW-based probes.
Article
Chemistry, Multidisciplinary
Kirill Khabarov, Emiliia Filalova, Messan Nouraldeen, Ekaterina Kameneva, Andrey Musaev, Sergei Tikhonov, Victor Ivanov
Summary: In this study, the influence of agglomeration degree of nanoparticles on the signal enhancement of surface-enhanced Raman spectroscopy (SERS) was investigated. It was found that structures formed mainly from non-agglomerated nanoparticles can enhance the SERS signal better. Aerosol nanoparticles modified by pulsed laser radiation show better results compared to thermally modified nanoparticles.
Article
Chemistry, Physical
Dao Thi Nguyet Nga, Quan Doan Mai, Nguyen Le Nhat Trang, Minh Khanh Pham, Nguyen Quang Hoa, Vu Dinh Lam, Hoang Van Tuan, Ha Anh Nguyen, Anh-Tuan Le
Summary: Taking advantage of metal-semiconductor junctions, functional nanocomposites have been designed and developed as active substrates for surface-enhanced Raman scattering (SERS) sensing systems. In this work, three types of nanocomposites based on manganese oxide (MnO2) nanostructures and electrochemically synthesized silver nanoparticles (e-AgNPs) were prepared, which differed according to the morphologies of MnO2. The SERS performance of these nanocomposites was evaluated using the pesticide tricyclazole (TCZ) as an analyte. The MnO2 nanosheet/e-Ag (MnO2-s/e-Ag) composite exhibited the most remarkable SERS enhancement due to its large surface area and ability to improve charge transfer efficiency.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Edyta Pyrak, Kacper Jedrzejewski, Aleksandra Szaniawska, Andrzej Kudelski
Summary: Research indicates that layers formed from single-stranded DNA on nanostructured plasmonic metals can be utilized as working elements in SERS sensors for sensitively and accurately identifying specific DNA fragments in biological samples. This study proposes two modifications to the standard method for depositing DNA on SERS-active structures, resulting in stronger SERS signals from the DNA layers.
Article
Chemistry, Physical
Yijing Zhao, Tianxiao Niu, Xinyu Dong, Yong Yang, Wei Zhai
Summary: This research develops a new material, graphene-drum bridged carbon aerogels, for broadband dual-wave attenuation. The material demonstrates exceptional properties including light weight, high robustness, excellent acoustic absorption, and electromagnetic wave attenuation. It also has multiple functions such as waterproofing, nonflammability, thermal insulation, and strain-sensing.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Food Science & Technology
John Ryan, Paige Jacob, Alec Lee, Zofia Gagnon, Ioana E. Pavel
Summary: This study investigates the relationship between the biodistribution and toxicity of positively charged silver nanoparticles (AgNPs(+)) and finds that they have adverse effects on the health and systemic functions of rats, especially in spleen.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Engineering, Environmental
Hani Nasser Abdelhamid, Dimitrios Georgouvelas, Ulrica Edlund, Aji P. Mathew
Summary: This article reports a method of processing hierarchical porous zeolitic imidazolate frameworks (ZIF-8) into a cellulose paper using a sheet former. This method shows promise in overcoming the bottleneck in applying metal-organic frameworks (MOFs) in commercial products, and the resulting materials have high adsorption and electrochemical detection performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Mayssa Zayene, Faisal K. Algethami, Hani Nasser Abdelhamid, Mohamed R. Elamin, Babiker Y. Abdulkhair, Youssef O. Al-Ghamdi, Hichem Ben Jannet
Summary: A new series of compounds with potential therapeutic value were designed, synthesized, and evaluated for their anti-cholinesterase, anti-tyrosinase, and cytotoxic activities. The results showed promising efficacy and suggest their potential as drug candidates.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Hamouda M. Mousa, Hanan S. Fahmy, Gomaa A. M. Ali, Hani Nasser Abdelhamid, Mohamed Ateia
Summary: This review critically examines the use of membrane technology for oil/water separation. It discusses membrane properties, various materials including organic, inorganic, and hybrid membranes, membrane design, fabrication techniques, and surface modification techniques. The review also highlights the current challenges and future research directions in this field.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Energy & Fuels
Sherief A. Al Kiey, Hani Nasser Abdelhamid
Summary: Co3O4@N-doped C composites were synthesized by pyrolysis of cobalt-based metal-organic frameworks (MOF). The hierarchical porous structure of zeolitic imidazolate frameworks (ZIF-67) was utilized to enhance electron and ion transport, resulting in improved capacitive performance.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Mervat Ibrahim, Hani Nasser Abdelhamid, Aya Mohamed Abuelftooh, Saad G. Mohamed, Zhen Wen, Xuhui Sun
Summary: This study presents a method for the synthesis of a triazine covalent organic framework/graphene oxide nanocomposite, which is used to synthesize N-doped carbon/reduced graphene oxide. The in-situ synthesized N-doped carbon/reduced graphene oxide shows superior electrochemical performance and is employed as electrode materials for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Applied
Mahmoud R. Saleh, Haitham M. El-Bery, Hani Nasser Abdelhamid
Summary: A wet-incipient impregnation method was used to synthesize hierarchical porous bimetallic (Co, Zn)-zeolitic imidazolate frameworks (ZIF-8)/TiO2 for efficient photocatalytic water splitting. Co@ZIF-8/TiO2 exhibited significantly higher photocatalytic efficiency than TiO2, with a hydrogen generation rate of 13 mmol·h(-1)·g(-1) and a 151-fold increase in catalytic performance. The hierarchical porous structure of Co@ZIF-8 facilitated charge transfer and provided efficient transport channels. This study demonstrates the potential of hierarchical porous metal-organic frameworks (MOFs) as support and promoter in photocatalytic applications of TiO2.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Hani Nasser Abdelhamid, Ghada Abd-Elmonsef Mahmoud
Summary: In this study, copper-based metal-organic frameworks (MOFs) were used to synthesize copper oxide (CuO) embedded into carbon (CuO@C), which displayed high antifungal activity against four economic postharvest plant pathogens. The CuO@C nanoparticles inhibited the growth of the fungal species and decreased their enzyme activity, reducing the potentiality of fruit disease. The successful formation of CuO@C nanoparticles was confirmed using various characterization techniques.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hani Nasser Abdelhamid
Summary: One-pot co-precipitation method for synthesizing microporous-mesoporous zeolitic imidazolate frameworks-8 (ZIF-8) crystals, using organic dyes as target molecules, was reported. The crystal growth involves an intermediate phase of zinc hydroxyl nitrate nanosheets, allowing the adsorption of the dyes. The materials showed potential for CO2 adsorption and ATP biosensing.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Walid Sharmoukh, Hani Nasser Abdelhamid
Summary: A metal-organic framework (MOF) of cerium (Ce) ions and 4,4 ',4 ''-nitrilotribenzoic acid linker was synthesized via a hydro thermal method. The Ce-MOF showed Fenton-like properties and displayed excellent catalytic oxidation activity for various organic compounds and water pollutants. It exhibited high efficiency in the oxidative degradation of dyes and could be recycled multiple times without significant loss of catalytic performance.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Chemistry, Applied
Hani Nasser Abdelhamid
Summary: Metal-organic frameworks (MOFs) have shown great potential for industrial applications but current synthesis processes limit their use due to the powder form. A solvothermal method was used to grow copper-based MOFs onto a cotton textile, creating a material called CuBDC@Textile. CuBDC@Textile demonstrated excellent vapor sensing properties and high adsorption capacity for pyridine. This dual-functional material holds promise for further research on MOFs in textile applications.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Numa A. A. Althubiti, T. A. Taha, A. A. Azab, Hani Nasser Abdelhamid
Summary: The use of solid-state materials such as sodium borohydride for hydrogen storage and release can meet the requirements of the "Hydrogen Economy". This study investigated ZnO-based materials as catalysts for hydrogen release through the hydrolysis of NaBH4. The synthesis method produced nanocomposites consisting of ZnO-xTiO(2) and ZnO-xCeO(2) (x = 5 wt.% or 10 wt.%). Characterization techniques confirmed the phase purity and optical properties of the materials. The materials exhibited a high hydrogen generation rate and different activation energies.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Hani Nasser Abdelhamid, Islam M. A. Mekhemer, Abdel-Aal M. Gaber
Summary: In this study, benzimidazole derivatives were successfully synthesized through photocatalytic synthesis using a solid-state acid catalyst ZrOSO4@C. The reaction, which allowed for condensation and cyclization in a single vessel, resulted in high yield (77-98%) and high purity of the benzimidazoles. The catalyst showed improvement in the synthesis of various benzimidazole derivatives using a wide range of aromatic aldehydes and heterocycles.
MOLECULAR CATALYSIS
(2023)
Article
Energy & Fuels
Moushira Saleh, Hani Nasser Abdelhamid, Dina M. Fouad, Haitham M. El-Bery
Summary: The use of light radiation to split water into hydrogen gas has great potential for green hydrogen production. A comparative study was conducted on the photocatalytic activity of TiO2 nanocomposites with two co-catalysts, Pt or Cu nanocrystals, using different synthesis methods. The study found that the deposition technique of the co-catalyst has a significant influence on the efficiency of photocatalysis for hydrogen production.
Article
Chemistry, Inorganic & Nuclear
Hani Nasser Abdelhamid, Sahar Sultan, Aji P. Mathew
Summary: 3D printing of cellulose/leaf-like zeolitic imidazolate frameworks (CelloZIF-L) allows for the creation of structures with high adsorption efficiency, capable of adsorbing carbon dioxide and heavy metals.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Dimitrios Georgouvelas, Hani Nasser Abdelhamid, Ulrica Edlund, Aji P. Mathew
Summary: In this study, nanocellulose/alginate composite hydrogel beads were successfully prepared and modified with in situ TEMPO-mediated oxidation. The modified beads exhibited improved adsorption efficiency and water flux, making them promising candidates for large-volume, high flux water treatment.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)