Article
Engineering, Electrical & Electronic
Farshad Khoshnood, Sohrab Manouchehri, Mohammad Hasan Yousefi
Summary: In this work, SnO2 nanostructure layers doped with different weight percentages of Ag were fabricated using spray pyrolysis. The sensing characteristics of these samples to H2S gas were investigated. The results showed that doping with Ag improved the sensing properties of the samples, with the 4 wt.% Ag-doped sample performing the best.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
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, Analytical
Jun Min Suh, Tae Hyung Lee, Kootak Hong, Young Geun Song, Sung Hwan Cho, Chong-Yun Kang, Young-Seok Shim, Donghwa Lee, Ki Chang Kwon, Ho Won Jang
Summary: The heterostructure between two-dimensional metal sulfides and metal oxides is an effective strategy to enhance the gas sensing performance. This study focuses on enhancing gas sensing response under highly humid conditions by using 2D tin sulfides-SnO2 heterostructures in the form of vertically aligned 1D nanostructures. The results show superior gas response and recovery to NO2 under high humidity, as well as diverse selectivity towards various gases using noble metal catalyst decoration.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Dechmongkhon Kaewsuwan, Thipusa Wongpinij, Chanan Euaruksakul, Narong Chanlek, Narit Triamnak, Tossaporn Lertvanithphol, Mati Horprathum, Jakrapong Kaewkhao, Prapun Manyum, Rattikorn Yimnirun, Saroj Rujirawat
Summary: This study reports the growth and photoluminescence of tin dioxide (SnO2) nanostructures on a Si (001) substrate. The growth process involved thermal evaporation of tin and exposure to air at room temperature. The results showed that the growth followed the Volmer-Werber growth mode, leading to the formation of SnO2 island nanostructures with a smallest size of 86 +/- 10 nm and a surface coverage of 53% at a substrate temperature of 225 degrees C. The photoluminescence spectra exhibited emission peaks in the yellow and blue regions, with CIE (x,y) chromaticity values indicating white emission.
RADIATION PHYSICS AND CHEMISTRY
(2023)
Article
Engineering, Environmental
Pil Gyu Choi, Akihiro Tsuruta, Yoshitake Masuda
Summary: Detection and discrimination of gases are crucial in various fields and the demand for easy and fast detection of various gas substances is increasing. This study improved the sensing property by modifying carbon nanotubes (CNT) with nanosheet-type tin oxide (SnO2), resulting in superior sensing properties and improved selectivity for ammonia gas. The accuracy of ammonia gas classification was significantly increased when using the modified sensor in the sensor array, showing its potential for ammonia gas detection and discrimination.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Qian Xia, Cuiping Gu, Xingxing Xie, Haibo Ren, Sang Woo Joo, Jiarui Huang
Summary: In this study, Sn-doped Fe2O3 microflowers were synthesized and used as sensing materials for acetone sensors. The microflowers exhibited good selectivity, high sensitivity, and stability for acetone vapor detection, with enhanced adsorption of acetone molecules.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Review
Biochemistry & Molecular Biology
Nayeem Ahmad Pandit, Tokeer Ahmad
Summary: In this review, the application of tin oxide and its composites in gas sensing is comprehensively discussed, focusing on the sensing mechanisms, synergistic effects, and methods to achieve high selectivity, sensitivity, and rapid response speed. The review highlights the recent advances in tin oxide and its composites for gas sensing applications, as well as the challenges and future prospects in this field.
Article
Chemistry, Analytical
Myung Sik Choi, Han Gil Na, Jae Hoon Bang, Ali Mirzaei, Seungmin Han, Ha Young Lee, Sang Sub Kim, Hyoun Woo Kim, Changhyun Jin
Summary: Gas sensors were fabricated by decorating amorphous carbon layers on SnO2 nanowires, without the need for pretreatment or functionalization, and operated at room temperature. The amorphous carbon increased surface area and improved NO(2) gas sensing by providing electronic effects to the SnO2.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Jianqiao Liu, Jiarong Lv, Haomiao Xiong, Yujia Wang, Guohua Jin, Zhaoxia Zhai, Ce Fu, Qianru Zhang
Summary: In this study, size-controllable SnO2 quantum dots were prepared using a hydrolysis-oxidation-hydrothermal method, and their gas-sensing characteristics were evaluated. The results showed a negative correlation between grain size and resistance, and a comprehensive model was proposed to explain the findings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Pil Gyu Choi, Yoshitake Masuda
Summary: A thin film of nanosheet-type tin oxide (SnO2) was synthesized on a sensor chip using an aqueous solution process. Au-Pd was then loaded onto the film's surface through ion sputtering. The sensor signal response of the Au-Pd loaded tin oxide to hydrogen was higher than that of the bare tin oxide, while its response to methane gas decreased. The designed nanosheet has potential applications as a hydrogen sensor array.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Yan Li, Lin-Xi Shan, Ren-Cong Wang, Xiao-Xue Lian, Qing-Jun Zhou
Summary: In this study, core-shell structured SnO2/ZnO nanoflowers were successfully fabricated using a two-step solvothermal method. The nanoflowers exhibited novel mesoporous hierarchical structure with excellent gas-sensing performance. Compared to pure SnO2 nanoflowers, SnO2/ZnO nanoflowers showed higher sensing enhancement, fast response, and long-term stability towards n-butanol.
CERAMICS INTERNATIONAL
(2022)
Article
Multidisciplinary Sciences
Abbas Mobasheri, Saeed Parhoodeh, Gholamabbas Shams
Summary: This research focused on the CO sensing activity of tin (IV) oxide nanofibrous layers prepared by electrospinning method. The effects of cadmium doping on crystal lattice were studied using XRD patterns. The results showed that cadmium doping had a significant effect on sensoring activity of tin (IV) oxide nanofibers.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Physics, Condensed Matter
S. Maheswari, M. Karunakaran, K. Hariprasad, K. Kasirajan, I. Loyola Poul Raj, L. Bruno Chandrasekar, T. Alshahrani, Mohd Shkir, S. AIFaify
Summary: The research investigated the effects of terbium doping concentration on the microstructural, optical properties, and ammonia gas sensing characteristics of tin oxide films. Results showed that the crystallite size decreased and bandgap values increased with higher terbium doping concentrations. A high gas response and fast response/recovery were reported for the 5% terbium doped sample.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Nanoscience & Nanotechnology
Xiaoyan Song, Fangzheng Zhao, Zhipeng Wang, Runbin Ge, Jinfeng Xing
Summary: In this study, ZnO@SnO2-Pt core-shell nanofibers with a hollow structure were successfully prepared and exhibited superior gas-sensing performance, achieving higher response speed and sensitivity on the basis of reduced operating temperature. Additionally, the gas-sensing mechanism of the nanofibers was discussed in detail.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Phung Dinh Hoat, Van Khoe Vo, Sung-Hoon Bae, Hyo-Jun Lim, Dang Thi Huong Thao, Pham Tien Hung, Nguyen Manh Hung, Nguyen Van Hoang, Joon-Hyung Lee, Young -Woo Heo
Summary: An effective ammonia sensor was developed using a CsPbBr3 thin film prepared directly by dual-source thermal evaporation. The sensor exhibited good selectivity toward ammonia gas at room temperature, with high responsivity (958% at 10 ppm) and low detection limit (250 ppb). It also showed good reversibility, repeatability, and fast response/recovery times (12/16 s). The effect of humidity on the sensor's performance was investigated, and the ammonia-sensing mechanism of the CsPbBr3 film was proposed and discussed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Crystallography
Faheem Ahmed, Shalendra Kumar, Nagih Mohammed Shaalan, Osama Saber, Sarish Rehman, Abdullah Aljaafari, Hatem Abuhimd, Mohammad Alshahrani
Summary: This work presents the development of separators coated with hexagonal boron nitride (hBN) for improving the thermal stability of Li-ion batteries (LIBs). The use of multiwalled carbon nanotubes (MWCNTs) as potential anode materials showed promising results in achieving stable operation of LIBs even at higher temperatures.
Article
Physics, Condensed Matter
A. M. A. Shamekh, N. M. Shaalan, T. A. Hanafy, M. Rashad
Summary: The structural features of PVA/MgO nanocomposite films with varying MgO concentrations were investigated using XRD and Raman spectra. XRD spectra showed a decrease in PVA crystallinity with the addition of 1 wt% MgO and an increase with higher MgO concentrations. Raman spectra and the increase in width of localized states Ee suggested the formation of structural disorders and defects at the grain boundaries. The optical properties of the films were evaluated and found to be dependent on MgO wt%, providing guidance for tuning the optical properties of flexible optoelectronic devices.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Analytical
Faheem Ahmed, Ghazzai Almutairi, Prince M. Z. Hasan, Sarish Rehman, Shalendra Kumar, Nagih M. Shaalan, Abdullah Aljaafari, Adil Alshoaibi, Bandar AlOtaibi, Kaffayatullah Khan
Summary: Activated carbon derived from biomass (rice husk) with a certain degree of amorphous carbon structure and spherical morphology was synthesized. The activated carbon showed excellent cyclic reversibility and stability with enhanced electrochemical capacitive performance. This study provides insight into using rice husk for the fabrication of anodes, which could be used for renewable energy storage devices in the future.
Article
Nanoscience & Nanotechnology
Faheem Ahmed, Ahmad Umar, Shalendra Kumar, Nagih Mohammed Shaalan, Nishat Arshi, Mohd Gulfam Alam, P. M. Z. Hasan, Shahid M. Ramay, Rizwan Khan, Abdullah Aljaafari, Adil Alshoaibi
Summary: In this study, a highly stable capacitive deionization (CDI) electrode was fabricated using reduced graphene oxide (RGO) as the positive electrode and spherical-like manganese dioxide nanoparticles decorated RGO sheets (MnO2/RGO) as the negative electrode, which selectively captured salt ions from saline solution. The MnO2/RGO electrodes exhibited a large specific capacitance and lower internal resistance, making them suitable for desalination applications. The MnO2/RGO//RGO-based CDI device showed higher salt uptake capacity and average salt adsorption capacity compared to recent electrode materials, indicating its potential for producing portable drinking water from seawater.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Physics, Applied
Yukana Terasawa, Masaaki Ichiki, Toshio Kikuta, Toru Asahi
Summary: Single crystals of ferroelectric triglycine sulfate doped with glycine analogs serine, threonine, lactic acid, and alaninol were grown via the slow solvent evaporation method. The dopants caused the formation of a multidomain structure in triglycine sulfate, as revealed by the ferroelectric domain structures and polarization-electric field hysteresis loops. The absence of hydrogen bonds due to the side chains and substituents of the dopant molecules resulted in a lack of cooperative phenomena and the absence of a single-domain structure, unlike in the case of alanine in a previous study.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
Shalendra Kumar, Faheem Ahmed, Nagih M. M. Shaalan, Nishat Arshi, Saurabh Dalela, Keun Hwa Chae
Summary: Magnetic nanoparticles of NiFe2O4 were successfully synthesized using sol-gel techniques. The nanoparticles were characterized using various techniques, including X-ray diffraction, transmission electron microscopy, dielectric spectroscopy, magnetization measurements, and electrochemical studies. The results showed that the nanoparticles possessed single-phase nature with face-centred cubic crystalline structure. The average particle size was around 10 nm, and they exhibited ferromagnetic behavior. The nanoparticles also showed high dielectric constant and potential for application in supercapacitors.
Article
Chemistry, Physical
Shalendra Kumar, Faheem Ahmed, Nagih M. Shaalan, Nishat Arshi, Saurabh Dalela, Keun H. Chae
Summary: CeXO2 (X: Fe, Mn) nanoparticles were synthesized and characterized for their structural, morphological, magnetic, and electrochemical properties. XRD, FE-TEM, dc magnetization, Raman analysis, and NEXAFS analysis confirmed the successful incorporation of Fe and Mn in CeO2 matrix and the formation of FCC fluorite structure. The Fe-doped CeO2 showed the lowest band gap and enhanced room temperature ferromagnetism. Ce0.95Fe0.05O2 electrode exhibited excellent electrochemical performance for energy storage devices.
Article
Chemistry, Physical
Mohamed Rashad, Saloua Helali, Nagih M. Shaalan, Aishah E. Albalawi, Naifa S. Alatawi, Bassam Al-Faqiri, Mohammed M. Al-Belwi, Abdulrhman M. Alsharari
Summary: This study comprehensively investigates the photocatalytic degradation and adsorption process of Congo red dye on a mixed-phase copper oxide-graphene heterostructure nanocomposite. Laser-induced pristine graphene and graphene doped with different CuO concentrations were used to analyze the effects. Results showed that incorporating copper phases into the graphene led to a shift in Raman spectra, and XRD confirmed the reduction of CuO to Cu2O and Cu phases embedded in the graphene. The findings demonstrate the potential of this compound for photocatalytic degradation of Congo red.
Article
Chemistry, Multidisciplinary
Faheem Ahmed, Shalendra Kumar, Nagih M. Shaalan, Nishat Arshi, Saurabh Dalela, Keun Hwa Chae
Summary: In order to meet the growing demand for efficient and sustainable power sources, it is crucial to develop high-performance energy storage systems that are cost-effective and environmentally friendly. This study combines rice husk-activated carbon (RHAC), known for its abundance and low cost, with MnFe2O4 nanostructures to improve the overall capacitance and energy density of asymmetric supercapacitors (ASCs).
Article
Chemistry, Analytical
Najla Khaled Almulhem, Chawki Awada, Nagih M. Shaalan
Summary: In this study, the enhanced photodegradation of high-concentration phenol red (PR) using fine TiO2 nanocrystals and KBrO3 as an electron acceptor is reported for the first time. The structural analysis confirmed the anatase phase of the TiO2 nanocrystals. The addition of KBrO3 resulted in an important enhancement in the degradation of PR dye. The proposed mechanism suggests that the OH- radicals play a crucial role in increasing the photocatalytic activities, and the addition of KBrO3 prevents e-h recombination and increases the concentration of hydroxyl radicals.
Article
Chemistry, Inorganic & Nuclear
Nagih M. Shaalan, Faheem Ahmed, Shalendra Kumar, Mohamad M. Ahmad, Abdullah F. Al-Naim, D. Hamad
Summary: This paper reports the use of a low-concentration active electrolyte, KBrO3, for supercapacitor applications. The electrochemical processes were conducted using two concentrations of KBrO3, 0.2 M and 0.4 M. Additionally, a novel strategy for doping graphene with KBr during its fabrication process is presented. This chemical doping improves the electrochemical properties of graphene for use as supercapacitors.
Article
Chemistry, Inorganic & Nuclear
Abdullah Aljaafari, Faheem Ahmed, Nagih M. Shaalan, Shalendra Kumar, Abdullah Alsulami
Summary: This work presents the deposition of titanium nitride (TiN) thin film and its application as a diffusion barrier for copper interconnect using the DC sputtering technique. The deposited film was analyzed using XRD, FESEM, and XPS techniques. The TiN film exhibited a face-centered cubic structure and uniform grain dispersion. The TiN film showed high thermal stability, low resistivity, and excellent performance as a diffusion barrier up to 700 degrees C. However, at higher annealing temperatures, the formation of Cu3Si and TiSi2 compounds was observed.
Article
Chemistry, Multidisciplinary
Nagih M. Shaalan, Shalendra Kumar, Faheem Ahmed, Nishat Arshi, Saurabh Dalela, Keun Hwa Chae
Summary: In this study, a new strategy for improving the electrochemical performance of laser-induced graphene (LIG) supercapacitors (SCs) was reported. The LIG was prepared using a CO2 laser system, with polyimide polymer as the source material. The combination of graphene and NiO particles through CO2 laser doping process significantly enhanced the capacitance of LIG. The results showed a multilayered and waved structure of LIG, with NiO fine particles distributed in the graphene layers.
Article
Chemistry, Multidisciplinary
Shalendra Kumar, Faheem Ahmed, Nagih M. Shaalan, Nishat Arshi, Saurabh Dalela, Keun Hwa Chae
Summary: Fe-doped ZnO nanostructures were prepared using microwave irradiation and investigated for their structural, morphological, magnetic, electronic structural, specific surface area and electrochemical properties as supercapacitor electrodes. The nanocrystalline structures possessed a hexagonal wurtzite structure, with rods and nanosheet-like morphology observed. Fe doping increased the saturation magnetization and specific capacitance, with the highest capacitance observed at 3% doping. The Fe-doped ZnO electrode displayed excellent cyclic stability and is suitable for energy storage applications.
Article
Multidisciplinary Sciences
Ahmed Saleh Ahmed, Walaa Ali Hassan, Mohamed Abdel-Moneim Mohamed, Ezzat Abdalla Ahmed, Nagih M. Shaalan, Mostafa Ragab Abukhadra
Summary: In this study, a high-performance nanocomposite based on the composite of a natural stone was successfully fabricated, and its characteristics were investigated. The organically modified black shale showed excellent adsorption activity for radioactive technetium materials, which is significant for protecting human and environmental health.
SCIENTIFIC REPORTS
(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)