Article
Chemistry, Multidisciplinary
Zhicheng Cai, Jiho Park, Doyeon Jun, Sunghoon Park
Summary: Porous TiO2 nanoparticle-embedded In2O3 nanofibers were synthesized for fabricating room temperature nitrogen dioxide gas sensors. The TiO2/In2O3 nanofibers exhibited higher response, shorter response and recovery times, better reproducibility, and improved selectivity to NO2 compared to pure In2O3 nanofibers. The enhanced NO2 sensing performance of the composite can be attributed to the formation of the TiO2/In2O3 n-n heterojunction, porous structure of the nanofibers, enhanced light absorption, and large number of O vacancies.
Article
Materials Science, Multidisciplinary
Zhaohua Wang, Mingfeng Zhi, Manzhang Xu, Chen Guo, Zhenwu Man, Zhiyong Zhang, Qiang Li, Yuanyuan Lv, Wu Zhao, Junfeng Yan, Chunxue Zhai
Summary: Sb-doped SnO2/ZnO nano-heterojunctions were prepared using a microwave hydrothermal method, and the effects of Sb-doping on the morphology and gas sensor performance of SnO2/ZnO NHs were studied in detail. The study found that Sb-doping changed the morphology of SnO2 and enhanced the gas sensor response.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Dong Wang, Chenshuai Han, Chunxiang Zheng, Hairui Fang, Dongfu Xu, Hongbin Zhao
Summary: TiO2 QDs-decorated In2O3 composite was synthesized via electrospinning, and SEM and TEM showed the self-assembly of In2O3 nanotubes with uniform dispersion of TiO2 QDs. XPS results revealed increased oxygen deficiency proportion by TiO2 QDs. The sensor based on IT1 sample had a 7.76 times higher response to 10 ppm NO2 (214.3) compared to IT0. The sensor exhibited fast response/recovery characteristics, low detection limit, and high moisture resistance. The enhanced sensing performance was attributed to electronic and geometrical effects. The method of QDs-induced oxygen deficiency and in-depth study of the sensing mechanism provide new perspectives for NO2 gas sensor construction.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Chengjiu Zhao, Xuezheng Guo, Yanqiao Ding, Chengyao Liang, Bingsheng Du, Wen Niu, Weijie Qu, Yijie Shi, Shuren Cong, Gang Meng, Yong He
Summary: A 2D/0D SnSe2/TiO2 composite is used as a sensing material for the detection of ppb-level NO2 at room temperature in complex gas environments. The composite sensor exhibits good sensitivity, specificity, and long-term stability, as well as the ability to accurately detect NO2 in the presence of interfering gases.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Analytical
Xiqian Sun, Qing Lan, Jing Geng, Mengli Yu, Yecheng Li, Xiaohong Li, Li Chen
Summary: By assembling TiO2 nanoparticles decorated with polyoxometalate (POM) and organic dye molecules, we have achieved accelerated room-temperature sensing of NO2 gas under visible light illumination. This method improves the sensitivity and response/recovery time of the gas sensors, while maintaining high selectivity and relatively low detection concentration.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Jinyong Hu, Jiawei Zhang, Xing Liu, Hongyu Zhang, Xiong-Xiong Xue, Yong Zhang
Summary: Efficiently monitoring toxic nitrogen dioxide (NO2) is of great practical significance for environmental protection and human health. Tin disulfide (SnS2) has shown promising application prospects in NO2 detection due to its unique physiochemical properties. However, the pristine SnS2-based gas sensor lacks selectivity to NO2 due to interference from other gases (especially NH3) at room temperature.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Wei Wei, Huanhuan Zhang, Tiyue Tao, Xiaohong Xia, Yuwen Bao, Manon Lourenco, Kevin Homewood, Zhongbing Huang, Yun Gao
Summary: In this work, a carbon monoxide sensor based on the CuO/TiO2 heterojunction was designed and fabricated. The sensor exhibits high sensitivity to CO at room temperature due to the good adsorption properties of CuO materials and the heterojunction interface charge transfer. The interference from H-2 is greatly reduced by optimizing the structure of the CuO/TiO2 heterojunction.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Environmental
Song Li, Jing Pu, Shiping Zhu, Yingang Gui
Summary: An experimental platform was built to verify the excellent properties of a composite sensitive material, and a gas sensing data prediction model was established to predict carbon monoxide concentration successfully.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Quan Sun, Yanqiu Li, Juanyuan Hao, Shengliang Zheng, Tianyue Zhang, Tingting Wang, Ruozhen Wu, Haitao Fang, You Wang
Summary: The SnS2/TiO2 heterostructure sensor showed excellent performance in detecting NO2, with a high response factor of 526% towards 1 ppm NO2 and a short response/recovery time of 43/102 s at room temperature. The decrease in surface-adsorbed oxygen content confirmed that light illumination helped in clearing the surface of SnS2/TiO2, providing more active sites for NO2 sensing. Additionally, a flexible SnS2/TiO2 sensor was fabricated to confirm its potential application in portable and wearable devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Analytical
Nimmala Harathi, Manoj Bollu, Kedhareswara Sairam Pasupuleti, Zhandos Tauanov, Koteswara Rao Peta, Moon-Deock Kim, Maddaka Reddeppa, Argha Sarkar, Vempuluru Navakoteswara Rao
Summary: The TiO2 NPs/PrGO heterostructure sensor fabricated in this work showed superior NO2 response at room temperature. The sensor exhibited high sensitivity, repeatability, excellent selectivity, and short response/recovery times towards NO2 gas. Additionally, UV irradiation accelerated the gas sensing performance of the TiO2 NPs/PrGO sensor.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
B. M. Babar, K. B. Pisal, S. H. Mujawar, V. L. Patil, L. D. Kadam, U. T. Pawar, P. M. Kadam, P. S. Patil
Summary: Vanadium Oxide (V2O5) nanostructures were prepared by a hydrothermal method and the effect of concentration variation on gas sensing performance was studied. The sample prepared with 0.3 M concentration showed the best response with good sensing features, making it a potential candidate for gas sensor fabrication.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Chandrabhan Patel, Biswajit Mandal, Rohit G. Jadhav, Tapas Ghosh, Mayank Dubey, Apurba K. Das, Myo Than Htay, Victor V. Atuchin, Shaibal Mukherjee
Summary: This paper reports the synthesis of a S, N co-doped carbon dot (C-dot)-functionalized WO3 nanostructure with ultra-high sensitivity and selectivity towards NO2 and H2S. The optimized pH value of 3 leads to the formation of uniform nanoneedle structures with high sensitivity. The addition of C-dots further enhances the sensitivity and selectivity of the WO3 nanoneedles. The composite material shows excellent sensitivity and stability at 150 degrees C and humidity up to 50%.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Youssef Doubi, Bouchaib Hartiti, Maryam Siadat, Herve Joel Tchognia Nkuissi, Hicham Labrim, Salah Fadili, Mounia Tahri, Philippe Thevenin, Etienne Losson
Summary: This study investigated the effects of spray time and substrate temperature on the properties of TiO2 thin layers using spray pyrolysis technique. The analysis results confirmed the formation of pure anatase phase TiO2 thin layers with semiconducting properties. The deposited TiO2 thin films showed high suitability for gas sensing applications, particularly for the detection of NO2.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Environmental
Bao-Yu Song, Cong Chen, Ya-Nan Li, Xian-Fa Zhang, Xiao-Li Cheng, Zhao-Peng Deng, Ying-Ming Xu, Shan Gao
Summary: A conductometric sensor with dual-selectivity was developed by using waste bamboo shoot skin as a biotemplate and immersing it in SnCl4 aqueous solution. The obtained SnO2-6 sensor demonstrated temperature-controlled dual-selectivity for two different gases, exhibiting high response towards NO2 and diisopropylamine (DIPA) at different temperatures. The excellent dual-sensing capability was attributed to the uniform mesopore distribution, large specific surface area, and rich oxygen vacancy defects in the SnO2-6 squama-wrapped tubes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Qinkai Feng, Xiuhuai Xie, Miao Zhang, Ningbo Liao
Summary: This study investigates the adsorption characteristics, electronic properties and diffusion properties of NO2 and other gases on Bi2S3. The results show that Bi2S3 has excellent detection performance for NO2 and exhibits even better detection capability when exposed to humidity. This work provides a theoretical foundation for the development of novel Bi2S3-based gas sensors.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Coatings & Films
Golnaz Taghavi Pourian Azar, Mustafa Urgen
SURFACE ENGINEERING
(2020)
Article
Engineering, Mechanical
M. M. Sakka, A. Bahri, E. Kacar, K. Elleuch, M. Urgen
JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME
(2020)
Article
Energy & Fuels
Berke Karaman, Nourhan Mohamad, Burcak Avci, Mustafa Urgen
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2020)
Article
Materials Science, Ceramics
Elham Ahounbar, Seyed Mohammad Mousavi Khoei, Mustafa Urgen, Mohammadreza Shokouhimehr
Summary: The study demonstrated that using an applied voltage of 470V in the PEO process can lead to a hierarchical TiO2 layer with a mixture of both anatase and rutile TiO2 polymorphs, and a micro/nano-pores morphology.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Coatings & Films
Eren Seckin, Mustafa Urgen
Summary: The study divided the nanotube growth process into three sequential stages and investigated the morphological transitions and growth kinetics individually for all stages.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Cem Ornek, Bilgehan M. Sesen, Mustafa K. Urgen
Summary: This paper investigates the mechanism of hydrogen-microstructure-strain interactions in a finely-grained 25Cr-7Ni super duplex stainless steel subjected to dynamic tensile loading. It reveals that hydrogen affects the properties of austenite and ferrite, leading to the occurrence of hydrogen-induced cracks, with the hydrogen absorption capacity of austenite playing a decisive role in hydrogen embrittlement susceptibility.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Mubashir Mansoor, Mehya Mansoor, Maryam Mansoor, Ammar Aksoy, Sinem Nergiz Seyhan, Betul Yildirim, Ahmet Tahiri, Nuri Solak, Kursat Kazmanli, Zuhal Er, Kamil Czelej, Mustafa Urgen
Summary: This study investigates the formation energy and equilibrium state of point defects in diamond through theoretical calculations. Monolithic-Kroger-Vink diagrams are plotted to represent the relationship between defect concentrations and heat treatment parameters. The method successfully predicts experimental data and provides new insights for the heat treatment of diamond and other materials.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Cagatay Yelkarasi, Nina Recek, Kursat Kazmanli, Janez Kovac, Miran Mozetic, Mustafa Urgen, Ita Junkar
Summary: This study presents a unique process for the preparation of nanopatterned surfaces on cardiovascular stents using magnetron sputtering and anodization. The nanopatterned surfaces were found to stimulate endothelial cell proliferation while reducing the proliferation of smooth muscle cells. Plasma treatment further enhanced the proliferation of endothelial cells and prevented platelet activation on the surfaces.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Coatings & Films
Erkan Kacar, Mustafa Urgen
Summary: The coating-diffusion method based on CA-PVD allows controlled production of titanium carbide (TiC) on steel substrates, forming Fe-Ti compounds during initial diffusion stages, which release iron and are carried to the TiC layer surface by macro particles.
SURFACE ENGINEERING
(2022)
Article
Chemistry, Physical
Nourhan Mohamed, Cem Ornek, Servet Timur, Mustafa Uergen
Summary: This study investigated the electrochemical behavior of pure nickel in sub-molten KOH at 200 degrees C and the structure of surface films formed at different anodic polarization potentials. The results showed that the thickness and structure of the surface films varied depending on the polarization potential. A thick and defective layer of NiO formed in the active region, while a thick and flaky adlayer of potassium-intercalated gamma-NiOOH formed in the far passive region. The high dissolution rate of nickel and the high viscosity of the sub-molten KOH contributed to the formation of micrometer thick surface films.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Biomedical
Kenda Sabouni, Yetkin Ozturk, Erkan Kacar, Gamze Torun Kose, Fatma Nese Kok, Muhammet Kursat Kazmanli, Mustafa Kamil Urgen, Sakip Onder
Summary: In this study, the effect of (Ti, Mg)N thin film coated Ti6Al4V plates and screws on mineralization/osseointegration was investigated. The results showed that the Mg-containing coatings enhanced mineralization, cell attachment, and hydroxyapatite growth, leading to increased attachment at the implant tissue interface.
BIO-MEDICAL MATERIALS AND ENGINEERING
(2023)
Article
Materials Science, Coatings & Films
Mehran Karimzadehkhoei, Erkan Kacar, Servet Timur, Mustafa Urgen, Guldem Kartal Sireli
Summary: This study presents an alternative approach for producing a hard TiB2/TiC multilayer on M2 high-speed steel by combining cathodic arc physical vapor deposition (CA-PVD) and cathodic reduction and thermal diffusion-based boriding (CRTD-Bor). The effects of boriding parameters on multilayer growth were examined, and empirical equations for estimating the thicknesses of TiB2 and TiC layers were derived. The multilayer coating exhibited enhanced hardness and wear resistance under dry sliding conditions.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Materials Science, Multidisciplinary
Burcak Avci, Kursat Kazmanli, Burak Evren, Mustafa Urgen
Summary: We investigated the impact of nitride-based physical vapor deposition (PVD) hard coatings, including TiN, TiAlN, and CrN deposited on inert substrates by cathodic arc PVD method (CA-PVD), on the galvanic corrosion of carbon steel. The contribution of these coatings was evaluated using zero-resistance ammeter (ZRA) and electrochemical impedance spectroscopy (EIS) in 3.5 wt.% NaCl at pH 2 and 6, with and without aeration. The results showed that the type of coating and the coupling environment played a significant role in the generated galvanic currents. Immersion tests visually confirmed these results for TiN-, TiAlN-, and CrN-coated steel cross-sections. The contribution of galvanic corrosion was prominent in environments where oxygen reduction was the dominant cathodic reaction, but minimal in deaerated acidic solutions due to the high bonding strength of adsorbed intermediates to the coating surfaces.
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
(2023)
Article
Electrochemistry
Dilan Er, Burcak Avci, Mustafa Uergen
Summary: In this study, interconnected self-standing tin nanowire electrocatalysts were produced using a specially designed aluminum anodic oxide template technique for CO2 reduction toward formate. These electrodes showed higher formate production and longer stability compared to flat tin sheets.
Article
Materials Science, Multidisciplinary
Cem Ornek, Beste Payam, Andrei Gloskovskii, Kursat Kazmanli, Nourhan Mohamed, Bora Derin, Mustafa Urgen, Chin-En Chou, Hung-Wei Yen, Burcak Avci, Steve Ooi
Summary: We investigated the passive behavior of Hybrid steel in sulfuric acid and sodium chloride solutions, finding that it possesses stainless steel characteristics and excellent corrosion resistance. The presence of Al and Ni enhances the role of Cr in forming a protective surface film, leading to the exceptional corrosion resistance. This work demonstrates the potential for designing sustainable stainless steel with high-strength properties without requiring the conventional Cr threshold concentration of 10.5 per cent.
NPJ MATERIALS DEGRADATION
(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)
