Article
Nanoscience & Nanotechnology
Stefan Nedelcu, Kishan Thodkar, Christofer Hierold
Summary: This article reports a customizable, portable, battery-operated, wireless platform for interfacing high-sensitivity nanoscale sensors, aiming to improve spatiotemporal measurement coverage of physical parameters. The platform has a wide current range and high versatility, suitable for signal acquisition from resistive nanosensors, with overall low power consumption, making it highly suitable for various sensing applications within the context of IoT.
MICROSYSTEMS & NANOENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Ruixue Mo, Dongqiang Han, Zeng Ren, Dazhuang Yang, Fei Wang, Caolong Li
Summary: Hollow Fe2O3/Co3O4 microcubes were successfully synthesized using a hydrothermal method and annealing process, showing enhanced sensing performances towards acetone. The enhanced gas sensing performances can be attributed to the high surface area of the hollow structure and the p-n heterojunctions within the microcubes.
CHINESE CHEMICAL LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Mameaseng Siriwalai, Matawee Punginsang, Kanittha Inyawilert, Anurat Wisitsoraat, Adisorn Tuantranont, Chaikarn Liewhiran
Summary: In this study, flame-made La2O3-loaded WO3 nanoparticle films were investigated for NO2 detection. The addition of La2O3 nanoparticles to WO3 sensors resulted in high response and selectivity towards NO2 at low working temperatures. The optimal parameters for the film preparation were determined to be 0.2 wt % La content and three spin coating cycles.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Muhammad Hamid Raza, Roberto Di Chio, Kaveh Movlaee, Patrick Amsalem, Norbert Koch, Nicolae Barsan, Giovanni Neri, Nicola Pinna
Summary: Heterostructures made from metal oxide semiconductors (MOS) are crucial for high-performance gas sensors. This study explores the transduction mechanism of heterostructured nanomaterials and relates the sensing response to the MOS shell or the p-n heterojunction. The use of carbon nanotubes as conductive substrates enables the devices to operate at low temperature. The findings are important for the development of next generation gas sensing devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Analytical
Bing Yang, Yue Song, Yang Song, Ziyu Ma, Jianbo Sun
Summary: MoSe2 nanosheets were synthesized successfully using solvothermal method and modified with TiO2 QDs to construct P-N heterostructures with the advantage of quantum dot constraint effect. Under the excitation of ultraviolet light, the developed heterojunction can effectively promote the separation and transfer of the generated charges, enhancing the room temperature sensitivity of the material for NO2 detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Nanoscience & Nanotechnology
Wenyu Guo, Xinle Lu, Shoutian Sun, Xiang Ye
Summary: A graphene-like material N2P6 is studied for its structural, mechanical, and electronic properties. The gas sensitivity of N2P6 nanosheet is investigated, especially for CO, CO2, H2O, H2S, N-2, NH3, NO, NO2, O-2, and SO2. Metal decoration on N2P6 nanosheet is found to enhance the gas adsorption and regulate the electronic and magnetic properties. The Li-N2P6 nanosheet shows strong affinity for NO and NO2, and strain and electric field can further enhance the adsorption performance and sensing capability. The findings provide insights for the design of efficient sensors and the study of gas adsorption mechanisms.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Milena Tomic, Martha Claros, Isabel Gracia, Eduard Figueras, Carles Cane, Stella Vallejos
Summary: Zinc oxide rod structures were synthesized and modified with Au, Fe2O3, or Cu2O to form nanoscale interfaces. X-ray photoelectron spectroscopy confirmed the presence of Fe as oxide-Fe2O3; Cu as CuO and Cu2O; and Au in three oxidation states. The Au-modified ZnO films showed significantly increased response and sensitivity towards nitrogen dioxide and ethanol.
Article
Chemistry, Analytical
Amit Kumar, Amit Kumar Shringi, Mahesh Kumar
Summary: To achieve good living standards, it is crucial to develop high-performance toxic gas sensing devices for various applications. Researchers have demonstrated CuO anchored SnO2 nanostructures for H2S gas sensors, which showed improved selectivity and sensitivity. These sensors exhibit good selectivity and response rate, making them promising for applications in sewer line detection and petroleum industry leak detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Yuxiang Qin, Xin Xu, Qing Xia, Xinyang Wang
Summary: This study prepared three layered double oxides with uniform distribution of various metal elements, showing enhanced gas-sensing response. CuCr-LDOs exhibited a significantly larger response towards reducing VOCs compared to ZnCr- or ZnTi-LDOs. The response differences were analyzed based on local charge region modulation and first-principles calculations, suggesting a potential strategy for developing highly sensitive oxide-based gas sensors.
Review
Chemistry, Multidisciplinary
Shulin Yang, Gui Lei, Huoxi Xu, Zhigao Lan, Zhao Wang, Haoshuang Gu
Summary: This review summarises the recent progress on assembly methods and gas sensing behaviours of sensors based on nanostructured metal oxide heterojunctions, showing that constructing heterojunctions can enhance the performance of sensors.
Article
Chemistry, Analytical
Jinmei Tian, Bin Jiang, Hong Shao, Yuting Wang, Tianqi Wang, Feng Li, Dan Li, Ying Yang, Xiangting Dong
Summary: In this study, one-dimensional tandem heterojunctions of SnO2 @POMs@WO3 nanofibers were prepared using coaxial electrospinning, and the gas sensing performance was significantly improved compared to SnO2 @WO3 nanofibers. The optimized response to 100 ppm ethanol reached 8.8, providing a new strategy for developing high-performance gas sensors through synthesizing one-dimensional tandem heterojunctions and introducing POMs.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Materials Science, Multidisciplinary
Vardan Galstyan, Nicola Poli, Viacheslav Golovanov, Annalisa D'Arco, Salvatore Macis, Stefano Lupi, Eleonora Bolli, Saulius Kaciulis, Alessio Mezzi, Elisabetta Comini
Summary: There is a growing demand for nanocomposite materials with new functionalities in chemical gas sensors and catalytic devices. Green synthesis methods are widely used to reduce the hazardous effects on human health and the environment. This study reports the fabrication of a nanocomposite material based on WO3 and TiO2 with unique electronic band alignment and gas sensing properties.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Materials Science, Multidisciplinary
Ziqiao Jiang, Ce Wang, Zhenglong Yang
Summary: We report a high-performance gas sensing strategy for the selective detection of Listeria monocytogenes, which is realized using n-CdO/n-SnO2 hetero-nanofibers with controllable compositions. The CdO/SnO2 nanofibers show enhanced 3H-2B sensing properties due to the modulation of n-CdO/n-SnO2 heterojunctions and the doping effect of Cd2+ ions. The variation of Cd/Sn molar ratios significantly affects the sensing performance, and 5 mol% CdO/SnO2 nanofibers exhibit the best response to 5 ppm 3H-2B at 260 degrees C, along with excellent stability and selectivity.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Chemistry, Physical
Xiaonan Wu, Youjin Gong, Bingjun Yang, Zhenghao Mao, Zhaotong Yan, Chen Su, Shunshun Xiong, Xinggui Long, Xiaolin Wang
Summary: The study focuses on the development of high-performance chemiresistive gas sensors at room temperature by combining MXene with SMO. The SnO2-TiO2-Ti3C2Tx heterostructure sensor exhibits excellent sensitivity, selectivity, and stability for NO2 detection. The improved sensing performance is attributed to the synergic effects of three phases, which form functionalized surfaces and multiple-type heterojunctions, resulting in enhanced electrical transduction function.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Wei Jin, Huan Wang, Yueli Liu, Shuang Yang, Jing Zhou, Wen Chen
Summary: This study developed SnO2 quantum dots-functionalized MoO3 nanobelts for highly selective and sensitive ethylene detection. The prepared 2.5%-SnO2 QDs/MoO3 NBs exhibited excellent response, low detection limit, and selectivity at a low operating temperature.
ACS APPLIED NANO MATERIALS
(2022)
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)