Article
Chemistry, Physical
Zhen-Peng Cui, Le-Xi Zhang, Heng Xu, Yan-Yan Yin, Bo Tang, Li-Jian Bie
Summary: By using a single-site-ion strategy, the metal-organic frameworks (MOFs) are improved to achieve U-DPA-Zn material with significantly enhanced humidity sensing performance. U-DPA-Zn exhibits the highest sensitivity, best linearity, shortest response recovery time, and smallest hysteresis. It also shows great potential in monitoring human respiration and water evaporation on human skin, and provides a new strategy to improve the humidity sensitivity of pure MOFs.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jiahao Yao, Jingsong Wang, Wenjun Cao, Li Li, Mingxiang Luo, Chunchang Wang
Summary: Hf1-x(In0.5Nb0.5)(x)O-2 (x = 0, 0.005, 0.05, and 0.1) ceramics doped with (In+Nb) were prepared by a solid-state reaction method. Dielectric measurements showed that environmental moisture significantly influenced the dielectric properties, with the best humidity response observed in the sample with x = 0.005. Nanosized particles of Hf-0.995(In0.5Nb0.5)(0.005)O-2 were fabricated by a hydrothermal method and their humidity sensing properties were studied. The material exhibited a large impedance change of nearly four orders of magnitude over a relative humidity range of 11-94%, which was attributed to the defects created by doping and improved adsorption capacity for water molecules.
Article
Chemistry, Analytical
Xu Ni, Jing Luo, Ren Liu, Xiaoya Liu
Summary: This work presents a one-step approach using UV-curing technology to fabricate humidity-sensing coatings based on polyelectrolytes. By incorporating hydrophobic monomers and crosslinking agents, the coatings demonstrate improved response, stability, and repeatability, leading to a wide detection range and short response time.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Computer Science, Information Systems
Junhua Tong, Xiaoyu Shi, Yu Wang, Liang Han, Tianrui Zhai
Summary: The wearable humidity sensor designed based on a flexible plasmonic random laser demonstrates a low-threshold random lasing with the assistance of silver nanoparticles, showing a good linear response. The peak intensity increases significantly as the relative humidity value rises, making it suitable for wearable laser devices.
SCIENCE CHINA-INFORMATION SCIENCES
(2021)
Article
Chemistry, Physical
Xiu-Juan Xie, Ren-Jun Si, Jun Zheng, Kai Wei, Xiu-Ying Zheng, Cheng Chen, Chun-Chang Wang
Summary: ZnO/NiO hollow spheres were successfully prepared with good purity and crystallinity, showing enhanced humidity response compared to pure materials. The sensor achieved a large impedance variation and fast response/recovery time, demonstrating promising potential for advanced humidity sensor applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Liangren Chen, Youquan Xu, Yinfeng Liu, Jing Wang, Jianwen Chen, Xiaohua Chang, Yutian Zhu
Summary: In this study, a flexible and transparent sensor with interlocked square column arrays containing Ag nanoparticles (AgNPs), citric acid (CA), and poly(vinyl alcohol) (PVA) was designed, inspired by the interlocked biological geometry of human skin. This sensor exhibited multisensory capabilities for pressure, temperature, and humidity. The interlocked AgNPs/CA/PVA sensor demonstrated high sensitivity, low detection limit, fast response, and outstanding stability as a flexible pressure sensor. Additionally, it also acted as a temperature and humidity sensor with high resolution and real-time detection capability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Analytical
Li Li, Xiaoqi Xuan, Gaifang Chen, Cheng Chen, Chunchang Wang
Summary: Na0.5Bi0.5TiO3 nanospheres synthesized by hydrothermal method exhibit ultrahigh sensing response, making them promising candidates for construction of high response humidity sensors.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Yan-Yan Yin, Le-Xi Zhang, Heng Xu, Yue-Cheng Jian, Meng-Jun Zhang, Li-Jian Bie
Summary: In this study, a new CP material CdTMA was successfully synthesized and explored as an impedimetric humidity sensing material, showing high sensitivity, good repeatability, fast response, and narrow hysteresis loop. The humidity sensing mechanism was discussed through complex impedance analysis, and the interaction between water molecules and CdTMA at different RH was further visualized by schematic diagrams.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Jingsong Wang, Bing Zhao, Chunchang Wang
Summary: TiO2/KNbO3 nanocomposite was prepared by a two-step hydrothermal method, and impedance-type sensors based on TiO2/KNbO3, TiO2, and KNbO3 were fabricated. The TiO2/KNbO3-based sensor exhibited a large impedance change over 5 orders of magnitude, which was 1-2 orders of magnitude larger than that of TiO2- and KNbO3-based sensors. The improved humidity sensing performance of the TiO2/KNbO3 nanocomposite was attributed to the heterojunction at the TiO2/KNbO3 interface and the Grotthuss mechanism. This study highlights the significance of the two-step hydrothermal method in fabricating high-purity nanocomposites with excellent humidity sensing performance.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Biochemical Research Methods
Yuqing Xu, Qinping Qiang, Yaru Zhao, Hongxing Li, Li Xu, Chong Liu, Yiya Wang, Yangkun Xu, Chengcheng Tao, Tianchun Lang, Lei Zhao, Bitao Liu
Summary: We have developed a 3D bifunctional flexible sensor based on an MXene melamine sponge, which shows excellent response to different stimuli, such as pressure and humidity. The sensor has super water resistance, wearability, high sensitivity, and good stability, enabling accurate monitoring of human movement and long-term humidity detection.
Article
Chemistry, Applied
Mimi Han, Wenhao Shen
Summary: Inspired by nacre-layered nanostructure, 1D TEMPO-oxidized cellulose nanofibers were used as a template to assemble 2D MXene nanosheets into a flexible and strong nanocomposite film. The film exhibited excellent humidity-sensing performance and showed potential applications in smart wearable electronics.
CARBOHYDRATE POLYMERS
(2022)
Article
Nanoscience & Nanotechnology
Ke Wu, Xiaoya Miao, Hongran Zhao, Sen Liu, Teng Fei, Tong Zhang
Summary: In this work, ionic liquids (ILs) were encapsulated in UiO-66-NH2 nanopores to create ILs@MOF nanomaterials. The resulting ILs@MOF-based sensor exhibited good sensing performance with a small humidity hysteresis and good stability. The sensor's response value was closely related to the amount of IL encapsulated. The study also demonstrated the multifunctional applications of the optimized sensor in human breath, skin humidity, and low humidity detection.
ACS APPLIED NANO MATERIALS
(2023)
Article
Multidisciplinary Sciences
Satoko Honda, Hyuga Hara, Takayuki Arie, Seiji Akita, Kuniharu Takei
Summary: This study develops a flexible humidity sensor that can be attached to a mask for wireless home-use respiration monitoring. The sensor has high sensitivity and stability, and can continuously track respiratory conditions during sleep, aiding in the identification of symptoms of sleep apnea.
Article
Engineering, Electrical & Electronic
Vivek Adepu, Hitesh Aryan Acharya, Manav Tathacharya, Venkat Mattela, Parikshit Sahatiya
Summary: This report demonstrates the piezotronic effect on the performance of a flexible humidity sensor based on MoS (2)/Ti3C2Tx nanohybrid. The sensor showed excellent reversibility for relative humidity (RH) ranging from 40% to 90%. The sensitivity of the sensor increased under external strains, indicating improved humidity sensing performance.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Pi-Guey Su, Nok-Him Choy
Summary: Impedance-type humidity sensors based on EuCl2, Eu2O3, and EuCl2/Eu2O3 blend films were investigated for their electrical properties in relation to relative humidity. A 7 wt% EuCl2/Eu2O3 blend film exhibited the highest sensitivity, best linearity, and long-term stability among the tested sensors. The role of ions in the humidity-sensing behavior of the blend film was elucidated through complex impedance plots.
Article
Engineering, Chemical
Pi-Guey Su, Chun-Fu Chang
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2018)
Article
Materials Science, Multidisciplinary
Meng-Shian Tsai, Chia-Jung Lu, Pi-Guey Su
MATERIALS CHEMISTRY AND PHYSICS
(2018)
Article
Chemistry, Analytical
Pi-Guey Su, Feng-Yu Chen, Ching-Hsuan Wei
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Materials Science, Biomaterials
K. N. Pandiyaraj, M. C. Ramkumar, A. Arun Kumar, P. V. A. Padmanabhan, M. Pichumani, Avi Bendavid, Pieter Cools, N. De Geyter, R. Morent, Vinay Kumar, P. Gopinath, Pi-Guey Su, R. R. Deshmukh
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2019)
Article
Materials Science, Multidisciplinary
Pi-Guey Su, Zhz-Hui Liao
MATERIALS CHEMISTRY AND PHYSICS
(2019)
Article
Engineering, Electrical & Electronic
Pi-Guey Su, Jia-Hao Yu
SENSORS AND ACTUATORS A-PHYSICAL
(2020)
Article
Chemistry, Analytical
Pi-Guey Su, Xiang-Hong Liu
Article
Chemistry, Analytical
Meng-Shian Tsai, Pi-Guey Su, Chia-Jung Lu
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Pi-Guey Su, Ping-Hsiang Lu
Article
Engineering, Electrical & Electronic
Pi-Guey Su, Mi-Chi Li
Summary: This study utilized novel room-temperature type chemiresistive gas sensor arrays combined with principal component analysis to achieve qualitative analysis of the composition of NO and NO2 in binary mixture gases at room temperature.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Analytical
Pi-Guey Su, Xing-Chen Chai
Summary: Gas sensors for detecting ppb-level H2S gas at room temperature were fabricated using Ag nanowire/hollow polypyrrole nanotube nanocomposite. The introduction of Ag nanowires onto hollow polypyrrole nanotubes effectively promoted the sensor response to H2S gas.
Article
Chemistry, Analytical
Pi-Guey Su, Chih-Chang Hsu
Summary: A flexible humidity sensor was developed by integrating sol-gel processing, free radical polymerization, and self-assembly techniques. The sensor incorporated gold nanoparticles and a trifunctional organosilica compound. The sensor demonstrated high sensitivity, minimal hysteresis, and rapid response time across a broad range of working humidity levels.
Article
Chemistry, Analytical
Pi-Guey Su, Yu-Ling Zheng
Summary: SO2 gas sensors fabricated using multi-walled carbon nanotubes/WO3 and reduced graphene oxide/WO3 nanocomposite films on an alumina substrate showed higher response to low concentrations of SO2 gas at room temperature. The sensor based on RGO/WO3 nanocomposite film exhibited faster response and recovery times, good reproducibility, and the lowest detection limit due to the formation of new conducting pathways and the spread of depletion layers upon interaction with SO2 gas.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Analytical
Pi-Guey Su, Sheng Lin-Kuo
ANALYTICAL METHODS
(2020)
Article
Chemistry, Analytical
Pi-Guey Su, Jia-Hao Yu, I-Cherng Chen, Hong-Ci Syu, Shih-Wen Chiu, Ting-I Chou
ANALYTICAL METHODS
(2019)
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)
