Article
Chemistry, Physical
Youzhi Yang, Sini Wu, Yuehong Cao, Shuang Li, Tengfeng Xie, Yanhong Lin, Ziheng Li
Summary: The development of room-temperature formaldehyde gas sensors with superior response-ability is crucial for various applications. In this study, Ni-doped ZnO hierarchical porous structures decorated with NiS composite materials were synthesized and used in room-temperature UV light-activated formaldehyde sensors. The 0.2% NiS/0.4% Ni-ZnO material showed a higher response value and faster response/recovery time compared to pure ZnO, which was attributed to the synergistic effect of Ni doping and NiS modification.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Environmental Sciences
Sunil Babu Eadi, Han Yan, P. Senthil Kumar, Yuvakkumar Rathinam, Hi-Deok Lee
Summary: In this study, the performance of IGZO-decorated ZnO films for the detection of NO2 gas was investigated by changing the IGZO deposition time. The results showed that decorating ZnO with IGZO can significantly increase the sensor response.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Analytical
Anifatul Faricha, Shohei Yoshida, Parthojit Chakraborty, Keisuke Okamoto, Tso-Fu Mark Chang, Masato Sone, Takamichi Nakamoto
Summary: In this study, atomic gold clusters were decorated on a platinum/polyaniline (Pt/PANI) working electrode to enhance the sensitivity of butanol isomers gas measurement. The presence of Au-2 clusters increased the current density and showed a more linear concentration dependency trend compared to the electrode without Au-2 clusters. Different combinations of room-temperature ionic liquids and fixed potentials were used to enhance the separation among butanol isomers.
Article
Chemistry, Physical
Zhicheng Cai, Jiho Park, Sunghoon Park
Summary: A series of porous Au nanoparticles (NPs) decorated with In2O3 nanoparticles (NPs) was embedded in ZnO nanofibers (NFs) using electrospinning and calcination methods. The gas-sensing properties of the resulting sensors were evaluated and it was found that the addition of In2O3 improved the response properties. The sensor with 0.03 g In(NO3)3 (S2) showed excellent stability, selectivity, and a high response to NO2 gas under UV irradiation at room temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Miao Liu, Ruiyang Sun, Zenghui Sima, Peng Song, Yongling Ding, Qi Wang
Summary: In this study, a facile method was used to prepare Au-In2O3/Ti(3)C(2)T(x )MXene composites, which exhibited significant sensitivity and excellent stability to formaldehyde at room temperature. The potential sensing mechanism of the composite sensor to formaldehyde was explored through density functional theory (DFT) simulations, providing an efficient tactic for the preparation of high-response formaldehyde-sensing materials for practical applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Yanjie Wang, Yong Zhou, Yuhang Wang, Ruijie Zhang, Jing Li, Xian Li, Zhigang Zang
Summary: The study utilized TiO2 nanoparticles decorated BP nanosheets as the sensing layer, achieving selective detection of 0.5-30 ppm NH3 at room temperature for the first time. The optimized BP-TiO2 sensors showed higher response, less baseline drift, shorter response/recovery times, and stronger long-term stability compared to pure BP counterparts.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Santhosh Nallakumar, Logu Thirumalaisamy, Sridharan Madhanagurusamy, Sivaperuman Kalainathan, Muthurakku Usha Rani
Summary: The presence of VOCs poses a threat to human health and air quality. Dimethylamine, a highly toxic amine, can directly impact the respiratory system. To address health risks, dimethylamine gas sensors are necessary. However, binary metal oxides face limitations in terms of operating temperatures and selectivity. This study deposited inverse spinel cobalt tin oxide (Co2SnO4) thin films using the chemical spray pyrolysis method. The annealing conditions were adjusted to control the phases. Interestingly, the ordered inverse spinel transformed into a disordered spinel at higher annealing temperatures. The ordered inverse spinel porous nanograin Co2SnO4 thin films exhibited an excellent gas response of 193.53 +/- 2.7 standard deviations at room temperature, signifying their potential use as dimethylamine gas sensors.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Analytical
Shu Xing Fan, Wei Tang
Summary: A flexible gas sensor based on ZnO nanoparticles decorated carbon nanofibers (ZnO@CNF) was successfully fabricated and analyzed for its structure and performance. The sensor exhibited high response and selectivity to ammonia at room temperature, along with flexibility. This suggests that the sensor could be a potential candidate for detecting ammonia in the exhaled gas of patients with gastrointestinal or kidney diseases in the future.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Olga Qomaruddin, Olga Casals, Hutomo Suryo Wasisto, Andreas Waag, Joan Daniel Prades, Cristian Fabrega
Summary: This work presents nitrogen dioxide (NO2) gas sensors based on zinc oxide nanorods (ZnO NRs) decorated with gold nanoparticles (Au NPs) that function under visible-light illumination. The study demonstrates the contribution of localized surface plasmon resonant (LSPR) by Au NPs attached to ZnO NRs. The presence of LSPR extends the functionality of ZnO NRs and increases the response at different wavelengths.
Article
Engineering, Electrical & Electronic
Md Tawabur Rahman, Raufur Rahman Khan, Yang Tian, Hussam Ibrahim, Liang Dong
Summary: This study demonstrates the room-temperature detection of N2O gas using 2D molybdenum disulfide nanoflakes decorated with gold nanoparticles. The combination of the electron-donating effect of AuNPs and the properties of MoS2 enables high sensitivity and excellent selectivity, with the ability to detect N2O levels as low as 0.5 ppm.
IEEE SENSORS JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Mostafa Shooshtari, Sten Vollebregt, Yas Vaseghi, Mahshid Rajati, Saeideh Pahlavan
Summary: Detection of hazardous toxic gases for air pollution monitoring and medical diagnosis has been researched. In this paper, a Titanium dioxide (TiO2)-based gas sensor enhanced with gold nanoparticles was fabricated and characterized. The presence of gold nanoparticles on the surface of TiO2 was found to enhance the sensitivity response of gas sensors by up to about 40%. The fabricated gas sensor showed sensitivity to acetone, methanol, and ethanol vapors at room temperature and the recovery time of the gold decorated TiO2 sensor was less than 40 seconds.
Article
Environmental Sciences
Shahid Hussain, Jesse Nii Okai Amu-Darko, Mingsong Wang, Asma A. Alothman, Mohamed Ouladsmane, Samar A. Aldossari, Muhammad Shahzeb Khan, Guanjun Qiao, Guiwu Liu
Summary: Considering the significant risk of H2S gas to human life, research on H2S gas sensors has gained considerable interest. This study presents the fabrication of CuO/ZnO multifaceted nanostructures through heat treatment of Cu2+/ZIF-8 impregnation precursors, and evaluates their microstructure and gas sensing characteristics using various characterization techniques. The hollow CuO/ZnO nanostructures demonstrated high gas response, quick response and recovery times, low detection limit, good humidity resistance, and high selectivity towards H2S gas, which can be attributed to their porous hollow nanostructures, p-CuO/n-ZnO heterojunctions, and the spillover effect between CuO and H2S.
Article
Electrochemistry
Pei-Te Lin, Chih-Ying Yu, Sin-Huei Ho, Shiuan-Wei Pan, Jyun-Siang Jhang, Yi-Xun Zhang, Yo-Lun Zhang, Tian-Tsz Hsieh, Hao-Chien Wang, Wen-Jeng Hsueh, Chun-Ying Huang
Summary: The photochemical activation process is a promising way to operate metal oxide gas sensors at room temperature, but currently limited to n-type semiconductors. In this study, a highly stable p-type copper gallium oxide (CuGaO2) gas sensor was fabricated through the facile sol-gel process. It can detect O-3 gas at room temperature and its gas response can be further enhanced by UV activation, achieving a highest gas response of 7.12 to 5 ppm O-3 gas at a UV intensity of 10 mW cm(-2). Additionally, the CuGaO2 sensor exhibits excellent long-term stability with only approximately 3% degradation over 90 days.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Jogendra Singh Rana, Santanu Das, Satyabrata Jit
Summary: A PTB7-decorated ZnO nanorod-based MSM ammonia sensor was demonstrated in this study, showing a high response rate to 20 ppm ammonia gas at room temperature, and still maintaining a certain response rate at a low concentration of 2 ppm. The device also exhibited fast response and recovery times.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Dinesh Mani, S. Sundar Manoharan, Ganesan Sriram, G. Johnsy Arputhavalli, S. Jebasingh
Summary: Kinematically grown highly oriented hexagonal ZnO nanorods and nanograined films were fabricated on silicon substrates via pulsed laser deposition. The structural, morphological, optical properties, and gas sensing studies of ZnO nanostructured thin film were systematically investigated. The study demonstrated that ZnO nanorods exhibit a greater sensitivity response for the detection of acetaldehyde (CH3CHO) compared to ZnO nanograined films, suggesting their potential as a material for CH3CHO gas detection at room temperature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Elena Colusso, Luca Cicerchia, Michele Rigon, Vincent Gomes, Alessandro Martucci
Summary: In this study, silk fibroin and carbon quantum dots nanocomposites were prepared through a facile solution casting approach. The optical properties and chemical interactions were characterized, and it was found that 0.5%wt of carbon quantum dots showed the highest photoluminescence intensity and water stability.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Alessio Giorgio Settimi, Luca Pezzato, Alessandro Longato, Katya Brunelli, Alessandro Martucci, Silvia Gross, Manuele Dabala
Summary: In this study, we investigated the incorporation of YAG-Ce particles into PEO coatings on aluminum alloy to give the surface photoluminescent properties. It was found that a higher content of YAG-Ce particles could be achieved with pulsed current mode, resulting in improved corrosion resistance and photoluminescent effect.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Mattia Biesuz, Gino Mariotto, Michele Cassetta, Ovidiu Ersen, Dris Ihiawakrim, Petr Hausild, Paolo Giopato, Alessandro Martucci, Mauro Bortolotti, Vincenzo M. Sglavo, Gian D. Soraru
Summary: The application of a DC current enables fast Ag+ -> Na+ ion exchange in SLS glass. The effects of processing parameters, electric current, and treating time on both air and tin sides of SLS float glass are studied, revealing non-Fickian diffusion. The ion exchange kinetics are similar on both sides, but the structure/microstructure is vastly different. Clear silver nanoclustering occurs on the tin side, resulting in metallic particles near the surface. The formation of nanoparticles involves a deep structural reorganization.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Analytical
Michele Astolfi, Giorgio Rispoli, Sandro Gherardi, Giulia Zonta, Cesare Malagu
Summary: Nowadays, the reproducibility and response repeatability assessment of sensors used in medical-diagnostic, environmental monitoring, etc. devices are crucial. Thermo-activated chemoresistive sensors have been widely employed, with (SnTiNb)O-2 nanosensors showing particular suitability in the medical and biological fields. Laboratory testing and statistical analysis of a set of thirteen randomly selected sensors demonstrated their consistency in detecting and discriminating low CO concentrations and high humidity levels with high repeatability.
Article
Oncology
Michele Astolfi, Giorgio Rispoli, Gabriele Anania, Giulia Zonta, Cesare Malagu
Summary: Given the high prevalence of colorectal cancer worldwide and its lack of specific symptoms, it is crucial to develop and validate low-invasive techniques for its detection. In this study, a device based on nanostructured gas sensors was used to analyze and differentiate the breath of blood samples collected from colorectal cancer patients at different stages of their treatment path. The device successfully distinguished between pre-surgery samples with tumors and post-surgery samples after tumor removal. These findings are promising for the clinical validation and future use of the device in clinical follow-up, patient monitoring, and detection of post-treatment relapses.
Article
Chemistry, Analytical
Antonio Orlando, Asma Mushtaq, Andrea Gaiardo, Matteo Valt, Lia Vanzetti, Martina Aurora Costa Angeli, Enrico Avancini, Bajramshahe Shkodra, Mattia Petrelli, Pietro Tosato, Soufiane Krik, David Novel, Paolo Lugli, Luisa Petti
Summary: Solid-state chemiresistive gas sensors, particularly those based on carbon nanotubes, have received significant research attention due to their high sensitivity, low power consumption, low cost, and portability. This study explores the use of single-walled carbon nanotube (SWCNT)-based sensing films deposited by spray deposition for gas sensor fabrication. Different surfactants were utilized during deposition to investigate their impact on sensor performance. The results showed high selectivity towards ammonia (NH3) and nitrogen dioxide (NO2), with enhanced responses under humid conditions and at elevated temperatures. The best sensing conditions were achieved against NO2, utilizing sensors with 10 layers of deposition and operating at 150 degrees C.
Article
Nanoscience & Nanotechnology
A. Rossi, B. Fabbri, E. Spagnoli, A. Gaiardo, M. Valt, M. Ferroni, M. Ardit, S. Krik, A. Pedrielli, L. Vanzetti, V. Guidi
Summary: Carbon capture, storage, and utilization are important in mitigating climate change. However, there is a need for smart and affordable devices for monitoring CO2 levels. This study introduces a new semiconductor material, nanostructured In2O3 film functionalized with Na, which demonstrates enhanced CO2 reactivity and improved sensitivity and selectivity to CO2.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Maria Basso, Elena Colusso, Chiara Carraro, Curran Kalha, Aysha A. Riaz, Giada Bombardelli, Enrico Napolitani, Yu Chen, Jacek Jasieniak, Laura E. Ratcliff, Pardeep K. Thakur, Tien-Lin Lee, Anna Regoutz, Alessandro Martucci
Summary: Pulsed excimer laser annealing is used to crystallize VO2 thin films at room temperature, achieving comparable thermochromic properties to furnace annealing with shorter annealing time and reduced energy consumption.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
Elena Colusso, Maria Basso, Chiara Carraro, Caterina Cesaroni, Enrico Di Russo, Massimo Guglielmi, Enrico Napolitani, Alessandro Martucci
Summary: The crystallization of cerium oxide sol-gel-derived thin films and their structural and morphological properties were investigated using pulsed excimer laser annealing. The results showed that laser fluence and number of pulses influenced the crystallization and morphology of the irradiated films.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Zhifu Feng, Damiano Giubertoni, Alessandro Cian, Matteo Valt, Matteo Ardit, Andrea Pedrielli, Lia Vanzetti, Barbara Fabbri, Vincenzo Guidi, Andrea Gaiardo
Summary: This study successfully fabricated a submicron-size gas sensor hotplate using advanced electron beam lithography, significantly reducing the power consumption. By introducing oxygen vacancies through N-2 calcination, the sensing capabilities of the ZnO nanofilm were optimized, resulting in improved sensing performance for toxic gases.
Article
Chemistry, Multidisciplinary
Elena Spagnoli, Matteo Valt, Andrea Gaiardo, Barbara Fabbri, Vincenzo Guidi
Summary: The influence of Nb addition in the oxide solid solution of Sn and Ti was investigated for the production of chemoresistive gas sensors. The sensors based on (Sn,Ti,Nb)(x)O-2 showed promising features for ethanol monitoring with low sensitivity to relative humidity. However, there is still a lack of understanding on the gas reaction mechanisms occurring at the surface of these nanostructures.
Review
Chemistry, Analytical
Giulia Zonta, Giorgio Rispoli, Cesare Malagu, Michele Astolfi
Summary: The necessity of detecting and recognizing gases is crucial, and gas sensors, especially chemoresistive sensors, have promising applications in fields such as medicine, particularly in the screening and monitoring of tumors.
Article
Chemistry, Analytical
Viviana Mulloni, Andrea Gaiardo, Giada Marchi, Matteo Valt, Lia Vanzetti, Massimo Donelli, Leandro Lorenzelli
Summary: In this paper, a novel chipless RFID sensor is proposed to detect sub-ppm concentration of NO2 in the environment at room temperature. The sensor is made of a metallic resonator covered with NO2-sensitive tin oxide and monitors both the frequency and intensity of the output signal. The experimental results show a fast response but slow recovery, which indicates the potential use of the sensor for non-continuous threshold monitoring. However, it is also demonstrated that the recovery can be accelerated by exposure to a UV source, enabling the sensor to be easily regenerated and recycled.
Article
Thermodynamics
Marco Tancon, Antonio Abbatecola, Matteo Mirafiori, Stefano Bortolin, Elena Colusso, Alessandro Martucci, Davide Del Col
Summary: This paper experimentally studies the dropwise condensation (DWC) of flowing steam on sol-gel silica-based coated aluminium substrates at various inclinations. The heat transfer coefficient (HTC) and droplet population measurements are conducted under different heat flux and vapor velocity conditions. It is observed that as the surface inclination decreases from vertical to horizontal, the average droplet size increases and there is a significant reduction in HTC, particularly at low vapor velocities. The HTC increases with steam velocity due to the vapor drag force, and at the highest mass velocity, the HTC becomes independent of surface inclination. A model for the droplet departing radius is modified to account for the effect of surface inclination, and it provides satisfactory predictions of HTC for different vapor velocities, heat flux, and surface inclinations. It is proposed to couple this new equation with existing models for heat transfer through a single droplet and drop-size distribution to predict the heat flux during DWC.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
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)
