Article
Chemistry, Analytical
Liping Zhu, Li Zhu, Xuemei Zhang, Li Yang, Guoyu Liu, Xiaoli Xiong
Summary: In this study, a programmable biosensing platform was developed by ingeniously integrating powerful DNA strand displacement reaction and sensitive electrochemical analysis method. A cascade amplification system based on catalytic hairpin assembly and entropy-driven catalytic was constructed to significantly improve the reaction rate and signal amplification effect. The product of the cascade amplification circuit could undergo strand displacement reaction with the signal probe on the electrode surface to obtain sensitive electrochemical signal changes and achieve highly sensitive detection of the target. Moreover, the biosensing platform demonstrated good versatility by realizing the sensitive detection of aptamer substrate and certain metal ion simply by recoding the corresponding recognition sequence.
ANALYTICA CHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Linying Yu, Liping Zhu, Yao Peng, Mengting Sheng, Jianshe Huang, Xiurong Yang
Summary: A highly sensitive and versatile dual-amplification electrochemiluminescence (ECL) biosensing platform was developed for rapid and sensitive detection of biomarkers. The platform utilized DNA nanostructures and catalyzed hairpin assembly (CHA) to achieve high amplification efficiency. The biosensor demonstrated a detection limit of 1.09 fM for target DNA and showed selective detection of silver ions. The proposed strategy has potential applications in disease diagnosis and environmental monitoring.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Haimin Zou, Chiliang Lin, Haocheng Zan, Yuyao Hu, Xiaruiyan Xu, Dongsheng Wang, Qiuju Wang, Yaoqi Xie, Chen Zhou
Summary: In this study, a fluorescent aptasensor based on CHA-HCR was developed for rapid and sensitive detection of H. pylori in stool samples. The aptasensor showed a wide detection range and low limit of detection, and the results were highly consistent with the 13C-UBT, highlighting its potential in H. pylori screening and other biomarker analysis.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Yuxiong Lv, Yingying Sun, Wenjie Liu, Jianna Yu, Guoxing Jing, Liu Wen, Huaiyue Xia, Dongyan Li, Wenshan Li
Summary: A enzyme-free dual-amplification assay was developed for sensitive detection of ultralow concentration tetracycline (TC) in milk. The method showed a wide linear range and low detection limit, and demonstrated high selectivity for TC. This method is of great significance for food safety and human health.
Article
Chemistry, Analytical
Minghui Zhu, Yaqin Chai, Ruo Yuan, Bo Zu, Yali Yuan
Summary: The dual-mode biosensor constructed in this study utilized dual CHA and enzyme cascade catalysis amplification to achieve sensitive and accurate detection of miRNA-21. It effectively addressed the low sensitivity and accuracy issues in traditional biosensors, providing a wide detection range and potential as an efficient and universal biosensing avenue.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Liang Zhu, Xiaolong Zhang, Ruo Yuan, Yaqin Chai
Summary: A novel two-dimensional ladder-like DNA nanostructure (LDN) was constructed to enhance the catalytic efficiency of a cascade catalytic nanomachine (LDN-CCN) for ultrasensitive detection of target miRNA-21. The electrochemical biosensing platform realized sensitive detection with a linear range from 100 aM to 10 nM and a detection limit as low as 48.5 aM. This study provides insights into exploring novel functional DNA nanostructures and high-performing mimic enzyme cascade catalytic platforms for applications in biological fields and early disease diagnosis.
ANALYTICAL CHEMISTRY
(2022)
Article
Biophysics
Xia Li, Fang Yang, Chunfang Gan, Ruo Yuan, Yun Xiang
Summary: The researchers have developed a novel DNA hairpin assembly method by introducing palindrome sequences, which can image miRNA-155 in living tumor cells with high sensitivity, providing a new approach for early disease diagnosis and biological studies.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Chemistry, Analytical
Xing Huang, Zihao Li, Yanli Tong, Yanfei Zhang, Taorong Shen, Meng Chen, Zhan Huang, Yakun Shi, Shaoqiang Wen, Si-Yang Liu, Jianhe Guo, Xiaoyong Zou, Zong Dai
Summary: In this study, a DNAzyme-amplified cascade catalytic hairpin assembly (CHA)-based nanosystem (DCC) was engineered to improve the sensitive imaging of microRNAs (miRNAs) in living cells. This nanosystem utilized DNAzyme amplification and CHA activation for enzyme-free amplification. MnO2 nanosheets were used as carriers for nucleic acid probes, protecting them from degradation and providing Mn2+ for the DNAzyme reaction. The DCC nanosystem achieved sensitive and selective miRNA analysis with a limit of detection of 5.4 pM, 18 times lower than the traditional CHA system. This nanosystem holds great potential for miRNA analysis, clinical diagnosis, and other biomedical applications.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yan Wu, Cuicui Fu, Wenbing Shi, Jinyang Chen
Summary: Abnormal expression of miRNAs is closely associated with health disorders, making them potential biomarkers for early clinical diagnosis. The enzyme-free CHA signal amplification method shows significant potential in improving the sensitivity of miRNA detection strategies, with various sensing strategies based on this approach being developed.
Article
Chemistry, Analytical
Chenxia Xie, Ruomeng Li, Xue Gong, Qingqing Zhang, Yanping Zhang, Zeyue Wang, Xiaoqing Liu, Fuan Wang
Summary: The Y-shaped DNA catalytic circuit is developed to efficiently analyze microRNA in live cells, providing a reliable tool for disease diagnosis and monitoring.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Zizhong Yang, Birong Liu, Ting Huang, Mengxu Sun, Tong Li, Wen-Jun Duan, Min-Min Li, Jin-Xiang Chen, Zong Dai, Jun Chen
Summary: This study developed a novel DNA nanowire technology for highly sensitive and highly specific imaging of miRNA in living cells. The technology demonstrated high reaction kinetics and sensitivity, and could detect miRNA as low as 51 pM. Additionally, it could accurately distinguish the miRNA expression difference between normal cells and cancer cells, and simultaneously image the total amount of multiple miRNAs.
Article
Chemistry, Analytical
Pengying Liang, Mengxu Sun, Mengyu Chen, Tong Li, Ting Huang, Qingying Zhou, Chunrong Li, Baoping Xie, Jinxiang Chen, Zong Dai, Yuanxin Tian, Jun Chen
Summary: A novel feedback catalytic hairpin assembly (FCHA) was proposed for mRNA imaging in living cells, which demonstrated improved reaction kinetics and sensitivity compared to traditional CHA, and could be used for real-time imaging and indication of changes in mRNA expression.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wenjing Wang, Yun Li, Axiu Nie, Gao-Chao Fan, Heyou Han
Summary: A lateral flow microRNA-21 biosensing platform was developed using a portable SERS reader and a catalytic hairpin assembly signal amplification strategy, achieving sensitive quantification of microRNA-21 with a detection limit as low as 84 fM. This approach shows great potential for amplified point-of-care biosensing for clinical diagnosis by detecting targets in serum samples.
Article
Chemistry, Analytical
Lei Liao, Xiaolong Li, Bingying Jiang, Wenjiao Zhou, Ruo Yuan, Yun Xiang
Summary: In this study, a fluorescence aptamer sensor was developed for the detection of trace kanamycin in milk samples with high selectivity and sensitivity. The sensor utilized a label- and enzyme-free signal enhancement approach by coupling catalytic hairpin assembly (CHA) with nonlinear hybridization chain reaction (nHCR). The results showed that the sensor achieved sensitive sensing of kanamycin in the dynamic range of 0.1-300 nM with a detection limit of 46.1 pM. Moreover, the sensor demonstrated the ability to selectively monitor kanamycin in spiked milk samples. This signal amplification strategy has the potential to be a sensitive and convenient method for monitoring various antibiotics.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Zhen Liu, Chen Liu, Liqiong He, Jinquan Liu, Le Li, Shengyuan Yang, Yan Tan, Xing Liu, Xilin Xiao
Summary: An ultrasensitive DNAzyme-based fluorescence biosensor for detecting Cu2+ was designed using cascade signal amplification strategy. The detection system utilized the activation of Cu2+-dependent DNAzyme by Cu2+ and subsequent reactions to generate a strong fluorescent signal. The biosensor showed excellent detection performance and potential applications.
Article
Nanoscience & Nanotechnology
Jinxiang Li, Yugang Yuan, Hongyu Gan, Chen Dong, Bin Cao, Jin-liang Ni, Xueliang Li, Wenjie Gu, Chunyuan Song, Lianhui Wang
Summary: This study proposes a novel nanobiointerface that integrates specific nanomaterials and DNA probes for the efficient capture, sensitive detection, and non-destructive release of circulating tumor cells (CTCs). The experimental results demonstrate that this nanobiointerface has great potential for testing and analyzing CTCs in blood.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Chen Dong, Xinyue Fang, Jingrong Xiong, Jingjing Zhang, Hongyu Gan, Chunyuan Song, Lianhui Wang
Summary: A highly sensitive and specific surface-enhanced Raman scattering (SERS) strategy was proposed to simultaneously image dual homodimerizations of membrane proteins on single live cells. Networking of AuNPs-based dual-recognition probes (dual-RPs) and SERS tags via proximity ligation-assisted catalytic hairpin assembly (CHA) was used to enhance the SERS effect. This strategy provides a good method for high-sensitivity monitoring of membrane proteins dimerizations-based multiple intercellular signal transductions in a natural and complex cellular microenvironment.
Article
Chemistry, Analytical
Chen Dong, Jingrong Xiong, Jie Ni, Xinyue Fang, Jingjing Zhang, Dan Zhu, Lixing Weng, Yewei Zhang, Chunyuan Song, Lianhui Wang
Summary: The development of theranostic nanosystems integrating cascaded SERS imaging and gene silencing therapy for accurate cancer diagnosis and treatment is a challenge, but rarely reported. In this study, a novel Au nanoparticles-based theranostic nanosystem was proposed for highly sensitive and specific cancer diagnosis and treatment through cascaded SERS imaging and DNAzyme-based dual gene silencing therapy. The system utilized specially designed Y-motifs and dsDNA linkers to identify intracellular cancer-related miRNAs and trigger DNAzymes for dual gene silencing therapy of cancer cells.
ANALYTICAL CHEMISTRY
(2022)
Article
Ophthalmology
Weizhou Yang, Chunyuan Song, Meng Gao, Shuna Wang, Haonan Yu, Yan Li
Summary: This study used OCTA to analyze the relationship between smoking and dry AMD. The results showed that SCP, DCP, and FRT were sensitive indicators for early and intermediate dry AMD, and DCP could reflect the effects of smoking on the retina.
Article
Biophysics
Hemeng Pan, Yan Dong, Lingbo Gong, Jiayun Zhai, Chunyuan Song, Zhilei Ge, Yan Su, Dun Zhu, Jie Chao, Shao Su, Lianhui Wang, Ying Wan, Chunhai Fan
Summary: In this study, a sensitive and straightforward SERS aptasensor was developed to detect exosomes using gold nanostars-decorated MoS2 nanocomposites as the SERS substrate. The aptasensor exhibited the ability to specifically recognize exosomes through the assembly of ROX-labeled aptamers on the surface of the nanocomposites, resulting in a decrease of the SERS signal.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Biophysics
Jingjing Zhang, Xiaping Miao, Chunyuan Song, Na Chen, Jingrong Xiong, Hongyu Gan, Jie Ni, Yunfeng Zhu, Kaiting Cheng, Lianhui Wang
Summary: A novel ultra-sensitive surface-enhanced Raman spectroscopy (SERS) sensor has been developed for rapid and reliable detection of SARS-CoV-2 RNA. The sensor utilizes non-enzymatic signal amplification and has high sensitivity and selectivity, making it a valuable tool for early detection and efficient prevention and control of COVID-19.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Biophysics
Jingjing Zhang, Chunyuan Song, Yunfeng Zhu, Hongyu Gan, Xinyue Fang, Qian Peng, Jingrong Xiong, Chen Dong, Caiqin Han, Lianhui Wang
Summary: In this study, a novel one-pot cascade signal amplification strategy integrating the CRISPR/Cas13a system and branched hybridization chain reaction (bHCR) was proposed for highly sensitive and specific SERS assay of disease-related nucleic acids. The method showed low detection limit, good linear calibration curve, and demonstrated good practicality in clinical samples.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Engineering, Mechanical
Jianbin Wang, Chunyuan Song, Dafu Zhang, Dadi Li, Sheng Qu
Summary: This paper proposes a fast and stable iterative algorithm for wheel-rail contact geometry based on constraint equations. It can be implemented in dynamic wear simulations that require real-time profile updating. The critical factors that determine convergence and iteration stability are analyzed. A B-spline is adopted for wheel-rail profile modeling, and it is found that the smoothness of the derivative curves significantly affects the numerical stability.
JOURNAL OF COMPUTATIONAL AND NONLINEAR DYNAMICS
(2023)
Article
Chemistry, Multidisciplinary
Huijuan Zhao, Xinyi Cao, Qiao Dong, Chunyuan Song, Lianhui Wang, Li Gao
Summary: Quasi-BIC resonances are reported in large-area silicon photonic crystal slabs formed by soft nanoimprinting lithography and reactive ion etching. These resonances are extremely tolerant to fabrication imperfections and can be characterized using simple transmission measurements. By introducing dimensional changes during the etching process, the resonances can be tuned over a wide range. The low-cost fabrication and easy characterization process make these devices suitable for future optical sensing applications.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Analytical
Chen Dong, Xinyue Fang, Xingcai Qin, Yeran Wang, Jingjing Zhang, Chunyuan Song, Lianhui Wang
Summary: This study developed a smartphone-based colorimetric detection method for Met dimerization on live cells, enabling high-sensitivity sensing of the HGF/Met signaling pathway. Met monomers on live cells were recognized by specific ligands, triggering a catalytic reaction to generate G-quadruplex fragments, which could further combine with hemin to form DNAzymes with catalytic activity. These DNAzymes produced a colorimetric signal upon catalyzing the oxidation of ABTS. The colorimetric assay was achieved through image acquisition and processing on a smartphone. The proposed method demonstrated a wide linear working range and low detection limit, making it suitable for point-of-care testing of Met-dimerization-related tumor cells.
ANALYTICAL CHEMISTRY
(2023)
Article
Optics
Chunyuan Song, Jingjing Gao, Yu Gan, Xuyu Zhang, Shensheng Han, Lihong Wang, Honglin Liu
Summary: In this study, a new method based on possible path sampling with corresponding weights and coherent superposition is proposed for simulating optical field propagation and speckle patterns in scattering media. It can be used for sophisticated studies on the influences of medium parameters, motion of scatterers, sample distortions, and morphological appearances. Additionally, it has potential for micro-examination of optical fields in scattering media and may inspire new methods and techniques for non-invasive precision detection and diagnosis of scattering media.
Article
Optics
Xuyu Zhang, Jingjing Gao, Yu Gan, Chunyuan Song, Dawei Zhang, Songlin Zhuang, Shensheng Han, Puxiang Lai, Honglin Liu
Summary: A communication channel is necessary for information transmission. By replacing the lens with a thin scattering medium, the image can still be extracted, indicating that the scattering medium retains information transmission channels. Through deep learning, it is found that a scattering medium can construct different channels to match source coding manners. Valid channels are essential for transmitting information through a spatial shift-invariant system.
Article
Biophysics
Jinxiang Li, Chen Dong, Hongyu Gan, Xinyue Gu, Jingjing Zhang, Yunfeng Zhu, Jingrong Xiong, Chunyuan Song, Lianhui Wang
Summary: A novel strategy for nondestructive separation/enrichment and ultra-sensitive SERS-based enumeration of CTCs is proposed using aptamer recognition and RCA. The strategy involves the use of magnetic beads modified with aptamer-primer probes for specific capture of CTCs, followed by magnetic separation/enrichment, RCA-powered SERS counting, and nondestructive release of CTCs. The method shows good potential for detecting CTCs in blood and allows for their subsequent analysis.
BIOSENSORS & BIOELECTRONICS
(2023)
Review
Chemistry, Multidisciplinary
Qian Peng, Jingjing Zhang, Xinyue Fang, Jie Ni, Chunyuan Song
Summary: This paper highlights the importance of early diagnosis of AMI in reducing mortality rates among CVD patients and discusses the advantages and limitations of common detection methods for AMI-related biomarkers. Furthermore, it reviews the research progress of SERS-based detection of biomarkers of myocardial injury, providing insights into its application and prospects in AMI diagnosis and the direction for future studies.
PROGRESS IN CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Jinxiang Li, Yugang Yuan, Hongyu Gan, Chen Dong, Bin Cao, Jin-liang Ni, Xueliang Li, Wenjie Gu, Chunyuan Song, Lianhui Wang
Summary: In this study, a novel nanobiointerface integrating silver nanorods and double-tetrahedral DNA probes was proposed for the capture, detection, and release of circulating tumor cells (CTCs) with high efficiency, demonstrating great potential for reliable CTC analyses in clinical applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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)