Article
Chemistry, Analytical
Guillem Domenech-Gil, Jordi Sama, Cristian Fabrega, Isabel Gracia, Carles Cane, Sven Barth, Albert Romano-Rodriguez
Summary: We present a methodology for localized growth of nanowires on micro-hotplates that allows independent adjustment of the device's resistance and gas response. Fabrication of nanowire-containing stripes with or without gaps enables nanowires to bridge current, and we demonstrate this approach with SnO2 nanowire-based chemoresistors. The results show the capability of tailoring nanowire stripe sizes and empty areas along the sensing material, resulting in up to 500 times response increase. The absence of nucleation seeds in the gap areas restricts current flow along the nanowire bridges, enhancing surface conduction controlled by nanowire-gas interaction.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Hyoungwon Park, Jae-Hun Kim, Dustin Vivod, Sungil Kim, Ali Mirzaei, Dirk Zahn, Changkyoo Park, Sang Sub Kim, Marcus Halik
Summary: This study enhanced the sensing capabilities of semiconducting metal oxide-based gas sensors through a new post-modification method, improving gas selectivity; the chemical-affinity-driven interaction between SAM and gas molecules enabled selective gas sensing.
Article
Materials Science, Multidisciplinary
Sunghoon Park, Young Woo Jung, Gwang Min Ko, Dae Yong Jeong, Chongmu Lee
Summary: In this study, In2O3 NP-decorated SnO2 NW sensor demonstrated strong response to NO2 and fast sensing speed. The importance of heterostructure formation and operating temperature optimization on the sensor response was confirmed through experimental results, with a focus on the gas sensing mechanism of the nanostructures for different sensing variables.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Estacio P. de Araujo, Cleber A. Amorim, Adryelle N. Arantes, Adenilson J. Chiquito
Summary: In this study, a SnO2 nanowire network was used as an active layer in a metal-semiconductor-metal (MSM) structured acetone gas sensor. The sensor showed good crystallographic characteristics and desired nanowire morphology, and exhibited efficient response to acetone gas within a certain concentration range at room temperature.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Analytical
Ang Li, Sikai Zhao, Jinzhou Bai, Shuling Gao, Dezhou Wei, Yanbai Shen, Zhenyu Yuan, Fanli Meng
Summary: By synthesizing SnO2@TiO2 nanorods, the sensing performance of titanium dioxide nanorods has been improved, exhibiting high response and stability towards hydrogen gas.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Chemical
Shichao Wang, Ya Xiong, Xiaohu Wang, Wendi Liu, Jian Tian, Nannan Wu, Hongzhi Cui, Xinzhen Wang
Summary: Surface modification of metal oxides with bimetallic nanoparticles is an appealing approach to enhance gas sensing properties. In this study, SnO2 hollow microspheres with wrinkle surface were synthesized and decorated with Au, Ag, and bimetallic AuAg nanoparticles. Gas test results showed that SnO2-AuAg exhibited higher response and shorter response/recovery time compared to SnO2-Au, SnO2-Ag, and pure SnO2. Furthermore, it demonstrated excellent long-term stability. The enhanced gas sensing performance was attributed to the morphological and structural composition, electronic and chemical sensitizations of Au and Ag, and the synergistic catalysis effect of AuAg bimetallic nanoparticles.
Article
Chemistry, Analytical
Matteo Tonezzer
Summary: A chemosensor composed of a single tin oxide nanowire is utilized to quickly determine the freshness of mackerel fish. The sensor can accurately differentiate fish samples of different freshness levels within seconds, showing good correlation with the total viable count.
Article
Chemistry, Analytical
Huaipeng Weng, Xumeng Dong, Yufeng Sun, Haibo Ren, Jiarui Huang, Sang Woo Joo
Summary: Ag@SnO2 nanosheets were prepared by a hydrothermal method followed by heat treatment and a liquid reduction process. The Ag@SnO2 nanosheet sensors showed improved gas-sensing behaviors compared to the pure SnO2 nanosheet sensor.
Article
Chemistry, Analytical
Vo Thanh Duoc, Chu Manh Hung, Hugo Nguyen, Nguyen Van Duy, Nguyen Van Hieu, Nguyen Duc Hoa
Summary: The grafted structures between SnO2 and ZnO nanowires were achieved through a two-step growth process, showing promising sensitivity for NO2 gas sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Ramesh Ghosh, Joydip Ghosh, P. K. Giri, Puspendu Guha, Gyu-Chul Yi
Summary: A facile growth of hybrid perovskite nanoparticles (NPs) has been demonstrated on mesoporous, high-aspect ratio, morphology-controlled Si nanorod (NR) arrays. The perovskite NPs coated on dimension- and position-controlled Si NR arrays exhibited strong photoluminescence (PL) and cathodoluminescence (CL) emission properties, with enhanced intensity compared to bulk perovskite microcrystals. The findings suggest the potential applications of perovskite nanocrystals in next-generation photonic sources. Evaluation: 8/10
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yoshitake Masuda
Summary: This review focuses on tin oxide nanomaterials, which are actively researched as semiconductor-type gas sensors. The development and applications of novel tin oxide nanomaterials in the past decade are discussed, with a focus on how dimensions and morphology affect sensing performance. The dendritic structure formed by 2D nanosheets connected by crystal growth points towards future sensor development, while the high gas adsorption performance and reactivity of metastable crystal planes provide guidance for future sensor development.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Yaqing Zhang, Liang Zhao, Zhimin Yang, Yunpeng Xing, Congcong Xin, Zefeng Wei, Teng Fei, Sen Liu, Tong Zhang
Summary: This study developed a noble metal decoration strategy to enhance the NO2 responses of alpha-Fe2O3/SnO2-rGO hybrids. The Pt modified alpha-Fe2O3/SnO2-rGO hybrids exhibited the highest response value attributed to their narrow band gap, small particle size, and excellent catalytic activity. The findings not only broaden the study of room-temperature gas sensors but also provide suggestions for discovering the gas sensing mechanism.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Hongcheng Liu, Feipeng Wang, Kelin Hu, Tao Li, Yuyang Yan
Summary: This study considers Pd-4 cluster decorated SnO2 nanowire as a potential candidate for gas sensors and explores its gas adsorption and sensing mechanism using density functional theory. The experimental results show that this composite nanomaterial has high gas-sensitive response and adsorption capacity, making it suitable for online monitoring of oil-immersed transformers.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Yijun Yang, Bohee Maeng, Dong Geon Jung, Junyeop Lee, Yeongsam Kim, JinBeom Kwon, Hee Kyung An, Daewoong Jung
Summary: The study focuses on the performance of SnO2 thin film sensors for H-2 gas, revealing that annealed films exhibit higher response and shorter response time.
Article
Chemistry, Analytical
Myung Sik Choi, Ali Mirzaei, Han Gil Na, Sangwoo Kim, Dong Eung Kim, Kyu Hyoung Lee, Changhyun Jin, Sun-Woo Choi
Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Review
Chemistry, Multidisciplinary
Qasem A. Drmosh, Ibrahim Olanrewaju Alade, Mohammad Qamar, Sheikh Akbar
Summary: Acetone is a toxic, explosive, and harmful gas, also serving as a key biomarker for diagnosing diseases and monitoring human health disorders. ZnO-based sensors, with their high stability and low cost, show great potential for acetone gas detection.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Ahmad Umar, Ahmed A. Ibrahim, Hassan Algadi, Hasan Albargi, Mabkhoot A. Alsairi, Yao Wang, Sheikh Akbar
Summary: Herein, a room-temperature NO2 gas sensor based on supramolecularly assembled isonicotinamide-graphene oxide nanocomposite (Iso-rGO) and Iso-rGO/Carbon felt (CF) electrode was prepared and studied. The sensor showed excellent reductive behavior of NO2 gas at room temperature, with a linear range of 1-30 ppm and a low detection limit of 1 ppm. The Iso-rGO/CF electrode exhibited high sensitivity and good stability for more than 30 days, making it suitable for the sensitive detection of gaseous NO2 in real samples.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Review
Biochemistry & Molecular Biology
Rohit Goyat, Yajvinder Saharan, Joginder Singh, Ahmad Umar, Sheikh Akbar
Summary: Graphene and graphene oxide have numerous applications, particularly in the field of water purification. Graphene oxide can be used to create efficient and fouling-resistant separation membranes, while GO/metal oxide nanocomposites can address pollution issues in water bodies.
Article
Biochemistry & Molecular Biology
Manisha Kumari, Ganga Ram Chaudhary, Savita Chaudhary, Ahmad Umar, Sheikh Akbar, Sotirios Baskoutas
Summary: The transformation of biowaste into products with added value is a lucrative strategy in nation-building. This study successfully synthesized highly water-soluble and luminous carbon quantum dots from discarded rice straw. The carbon quantum dots exhibited outstanding optical and luminescent qualities, making them suitable for fluorescence detection of Cu2+ ions in aqueous conditions. The waste-to-wealth strategy offers a more environmentally friendly and economically viable approach to wastewater management.
Review
Biochemistry & Molecular Biology
Nabil K. Abd-Elrahman, Nuha Al-Harbi, Noor M. Basfer, Yas Al-Hadeethi, Ahmad Umar, Sheikh Akbar
Summary: Microbial fuel cells (MFCs) are an environmentally friendly technology and a source of renewable energy. The use of nanomaterials in the manufacture of electrodes and membranes can significantly improve the performance and efficiency of MFC in generating electrical energy and improving wastewater treatment.
Article
Chemistry, Analytical
Faheem Ahmed, Thangavelu Kokulnathan, Ahmad Umar, Sheikh Akbar, Shalendra Kumar, Nagih M. Shaalan, Nishat Arshi, Mohd Gulfam Alam, Abdullah Aljaafari, Adil Alshoaibi
Summary: In this study, a zinc oxide hexagonal prisms/phosphorus-doped carbon nitride wrinkles (ZnO HPs/P-CN) electrocatalyst was prepared via a facile sonochemical method for the detection of nitrofurantoin (NF). The ZnO HPs/P-CN-sensing platform exhibited amplified response and low-peak potential, attributed to its ideal architecture, rapid electron/charge transfer, good conductivity, and abundant active sites. The ZnO HPs/P-CN-modified electrode showed rapid response, low detection limit, good linear range, high sensitivity, selectivity, stability, and reproducibility for electrochemical detection of NF. The feasibility of the proposed ZnO HPs/P-CN sensor for detecting NF in water and human urine samples was also demonstrated.
Article
Chemistry, Analytical
Digambar Nadargi, Ahmad Umar, Jyoti Nadargi, Jayvant Patil, Imtiaz Mulla, Sheikh Akbar, Sharad Suryavanshi
Summary: The spinel MgFe2O4 ferrite was synthesized using a glycine-assisted auto-combustion route and showed excellent gas-sensing ability, making it suitable for detecting reducing gases.
Article
Biochemistry & Molecular Biology
Yajvinder Saharan, Joginder Singh, Rohit Goyat, Ahmad Umar, Sheikh Akbar
Summary: This research work focused on the preparation and characterization of PVFTX-100, PVFSDS, and PVFT-80 sponges for the removal of organic solvents from polluted soil/water samples, with a particular emphasis on the hydrophobic modification and absorption capacity of the sponges. SEM images revealed the surface features of the sponges, showing random roughness and protrusions that facilitated the absorption and retention of organic solvents molecules.
Review
Biochemistry & Molecular Biology
Nabil. K. Abd-Elrahman, Nuha Al-Harbi, Yas Al-Hadeethi, Adel Bandar Alruqi, Hiba Mohammed, Ahmad Umar, Sheikh Akbar
Summary: This comprehensive review examines the factors influencing bio-hydrogen production in Microbial Electrolysis Cells (MECs), including configuration, electrode materials, substrates, pH, temperature, applied voltage, and nanomaterials. The review summarizes the results based on the use of nanomaterials as electrodes, substrates, pH, temperature, applied voltage, bio-hydrogen production rates, columbic efficiency, and cathode bio-hydrogen recovery. Future challenges for improving bio-hydrogen production in MECs are also discussed.
Article
Chemistry, Analytical
Ahmad Umar, Pooja Tiwari, Vaibhava Sadanand, Vaibhava Srivastava, Pooja Lohia, Dilip Kumar Dwivedi, Hussam Qasem, Sheikh Akbar, Hassan Algadi, Sotirios Baskoutas
Summary: This paper describes the simulation of ZnO/CdS/SnS/NiO/Au solar cells using SCAPS-1D software and evaluates the effects of various parameters on the cell performance. The results show a maximum power conversion efficiency of 26.92%.
Article
Materials Science, Multidisciplinary
Ahmad Umar, M. Shaheer Akhtar, Ahmed A. Ibrahim, Hassan Algadi, Mohsen A. M. Alhamami, Faheem Ahmed, Moaaed Motlak, Sheikh Akbar
Summary: This paper reports the preparation of highly dense and defined Co3O4 nanofibers via electrospinning and controlled oxidation methods. The fabricated Co3O4 nanofibers were characterized and found to possess well-defined fibrous morphology and crystalline cubic phase. These nanofibers were used as electro-active electrodes in supercapacitors and chemical sensing, and exhibited excellent cycle stability, high specific capacitance, and reasonable sensitivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Mohammad Jamir Ahemad, Dong-Seog Kim, Thanh Duc Le, Lakshmana Reddy Nagappagari, Geun-Jae Oh, Gi-Seung Shin, Umar Ahmad, Sheikh A. Akbar, Yeon Tae Yu
Summary: In this study, thermally stable ZnO-supported AgPd bimetallic alloy core-shell nanoparticles were synthesized, which showed excellent gas sensing performance, including selectivity, anti-interfering response, repeatability, etc. The improved electronic structure, as a result of lattice mismatch, upshifts in the d-band center, and oxidation resistance behavior of AgPd alloy, enhanced the catalytic properties and gas sensing performances in AgPd alloy@ZnO nanoparticles.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Savita Chaudhary, Manisha Kumari, Pooja Chauhan, Ganga Ram Chaudhary, Ahmad Umar, Sheikh Akbar, Sotirios Baskoutas
Summary: A one-pot methodology is developed to synthesize three types of C-dots and their activated counterparts using waste plastic precursors. Optical studies reveal significant changes in the absorption edge and luminescence behavior of the particles. The mode of interaction between C-dots and their ACs is determined using solvent-dependent fluorescence spectroscopy. This investigation provides valuable insights into the emission behavior and potential applications of the particles as fluorescent probes.
Review
Multidisciplinary Sciences
Vikas Kumar, Chadetrik Rout, Joginder Singh, Yajvinder Saharan, Rohit Goyat, Ahmad Umar, Sheikh Akbar, S. Baskoutas
Summary: The contamination of soil with heavy metal ions is a global issue caused by rapid industrialization, human negligence, and greed. These toxic and non-biodegradable ions can accumulate in the human body, leading to chronic diseases and making the soil unfit for agriculture. It is necessary to monitor and eradicate these metal ions from soil and water bodies using physical, chemical, and biological techniques. Factors such as feasibility, contaminants, and soil characteristics determine the selection of the remediation technology. This review article provides a detailed study of the three technologies, their mechanisms, advantages, and disadvantages.
Article
Environmental Sciences
Ahmad Umar, Rajesh Kumar, Pravin S. More, Ahmed A. Ibrahim, Hassan Algadi, Mohsen A. Alhamami, Sotirios Baskoutas, Sheikh Akbar
Summary: A reduced graphene oxide nanocomposite was synthesized and used to prepare PEG-rGO supramolecular assemblies. Gas-dependent electrical properties of these supramolecular assemblies were investigated, and they exhibited excellent sensitivity and selectivity towards benzene, methanol, and H2 gas.
ENVIRONMENTAL RESEARCH
(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)