Article
Chemistry, Multidisciplinary
Hyun Soo Seo, Young Jin Koh, Hyunwoo Nam, Jong-Seon Kim
Summary: Developing an accurate CWA vapor generator coupled with FT-IR spectroscopy is crucial for real-time monitoring of target agent concentration for testing and evaluation in homeland security. The generated vapor showed long-term stability and was evaluated using GC-FID. The system demonstrated real-time monitoring and accurate evaluation capabilities for chemical detectors.
Article
Chemistry, Inorganic & Nuclear
Mustafa M. Kadhim, Taleeb Zedan Taban, Sallal A. H. Abdullaha, Zainab Sabri Abbas, Safa K. Hachim, Ahmed Mahdi Rheima, Haider Abdulkareem Almashhadani, Roya Ahmadi
Summary: The decoration of Sc metal on the surface of AlN and GaN effectively enhances the sensing performance of XN nanotubes towards the detection of sarin. The metal-decorated XN nanotubes demonstrate improved sensitivity and fast recovery time for desorbing sarin from the surface.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Review
Chemistry, Analytical
Zygfryd Witkiewicz, Krzysztof Jasek, Michal Grabka
Summary: On-site detection of chemical warfare agents (CWAs) can be achieved using various analytical techniques. However, these techniques are often complex and expensive. As an alternative, analyzers based on simple semiconductor sensors are being explored. These sensors use semiconductor materials such as metal oxides, organic semiconductors, carbon nanostructures, and silicon to detect CWAs. This review summarizes the current state of knowledge and achievements in the field and discusses the prospects for the practical application of semiconductor sensors in CWA detection.
Article
Chemistry, Multidisciplinary
Jin Hyun Park, Sun Gu Song, Myoung Hyeon Shin, Changsik Song, Han Yong Bae
Summary: In this study, a new class of molecular sensor for detecting organophosphorus chemical warfare agents was reported. The sensor showed high binding abilities and reasonable selectivity through noncovalent host-guest interactions.
Article
Chemistry, Physical
Seong-Yeon Lee, Dong-Il Jang, Doh-Yoon Kim, Ki-Ju Yee, Huu-Quang Nguyen, Jeongkwon Kim, Youngku Sohn, Heesoo Jung
Summary: UV laser irradiation was applied for decontamination of CEPS and malathion simulants, with 266 nm laser showing efficient decontamination for CEPS by producing the byproduct diphenyl disulfide. However, decontamination with 355 and 532 nm on CEPS, as well as 266 nm on malathion, was relatively inefficient. The study emphasized the importance of selecting proper laser wavelengths and supported the photochemical mechanism of UV laser decontamination.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Analytical
Meddy Vanotti, Sacha Poisson, Valerie Soumann, Valentin Quesneau, Stephane Brandes, Nicolas Desbois, Jian Yang, Laurie Andre, Claude P. Gros, Virginie Blondeau-Patissier
Summary: This study introduces a Surface Acoustic Wave (SAW) device functionalized with metallocorroles for the selective detection of carbon monoxide (CO). It emphasizes the necessity of detecting CO in the presence of interferents and proposes a differential configuration of the sensor to reduce sensitivity to external parameters and interferents. The sensitivity of the sensor under various conditions and the repeatability of measurements are demonstrated to assess the efficiency of the device.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Qiaoli Zhang, Yang Yang, Junmei Xia, Yingying Zhang, Shilei Liu, Zhiqin Yuan
Summary: A chemiluminescence sensor array based on the organophosphorus-H2O2 reaction has been proposed in this study to effectively discriminate organophosphorus nerve agents. Experimental results demonstrate the feasibility and high accuracy of this sensor array in distinguishing the agents.
Article
Chemistry, Analytical
Qian Chen, Jiaxu Liu, Shengjun Liu, Jian Zhang, Lifang He, Renyong Liu, Hui Jiang, Xinya Han, Kui Zhang
Summary: Chemical nerve agents are toxic compounds that can be used by terrorists to threaten security and safety. A colorimetric and fluorescent probe has been developed to detect specific chemical nerve agents in solution and vapor. The detection mechanism involves the reaction between the probe and the nerve agent, resulting in fluorescent changes. The probe can also be used for visual detection of nerve agents.
ANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Electrical & Electronic
Maria Allers, Andre Ahrens, Moritz Hitzemann, Henrike Bock, Thomas Wolf, Jorg Radunz, Fabian Meyer, Frank Wilsenack, Stefan Zimmermann, Arne Ficks
Summary: Using unmanned aerial vehicles (UAVs) equipped with gas detectors enables rapid exploration of contaminated areas and accurate detection and identification of chemical agents, providing a reliable assessment of risks and appropriate protection for first responders. However, UAVs have limitations in payload, operational range, and power requirements, posing significant technical challenges in choosing suitable gas sensors. This study presents a mobile ion mobility spectrometer (IMS) designed for UAV operation, with a closed gas loop, high-performance driver electronics, and wireless data transmission capabilities.
IEEE SENSORS JOURNAL
(2023)
Article
Environmental Sciences
Miroslav Labaska, Miroslav Gal, Tomas Mackulak
Summary: Chemical warfare agents (CWAs) are highly toxic compounds and degrading them using decontamination agents is crucial for protecting human health. A ferrate (VI)-based decontaminant has been studied for effectively degrading persistent nitrogen mustard (HN3) in just 4 minutes. The degradation products mainly consisted of reduced Fe species, confirming the environmental friendliness of this proposed decontamination solution.
Article
Chemistry, Analytical
Mei Li, Shuang Wang, Chuting Xu, Huiwen Ruan, Weiguo Wang, Chuang Chen, Haiyang Li
Summary: A parallel coupling apparatus combining ion mobility spectrometry and ion trap MS (p-IMS-ITMS) was developed to enhance the detection rate and time response capability of a stand-alone ITMS system for efficient chemical tracking.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Pedro Segura A. Chavez, Jeremy Bonhomme, Mohamed Lamine Faycal Bellaredj, Lucile Olive, Denis Beyssen, Mourad Oudich, Paul G. Charette, Frederic Sarry
Summary: This paper introduces a novel Love wave sensor with tuned penetration depth and sensitivity, which can detect mechanical changes beyond focal adhesion points on cell monolayers. Experimental results demonstrate that the sensor has measurable responses to liquids with viscosity similar to that of cell monolayers and cells themselves.
Article
Materials Science, Multidisciplinary
James Disley, Guzman Gil-Ramirez, Jose Gonzalez-Rodriguez
Summary: A molecular imprinted polymer (MIP) based on chitosan was successfully synthesized for selective trapping of organophosphorus compound DMMP. The results showed that MIP exhibited higher trapping capacity compared to non-imprinted polymer and activated charcoal, and was less affected by interfering substances. Additionally, MIP demonstrated certain reusability and reliability as a filter for hazardous materials.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Ling Li, Bin Peng, Jialiang Zhu, Zhengxi He, Yuntao Yang, Wanli Zhang
Summary: A surface acoustic wave strain sensor consisting of three langasite surface acoustic wave resonators was presented in this study to cancel the temperature dependency. The strain sensitivities of the resonators were investigated over a temperature range of 20 to 250 degrees C, demonstrating linear representation of strain by resonance frequency shifts. Experimental results showed the sensor could accurately measure strains with a small error margin.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Environmental
Tommi Mikkonen, Daniel Luoma, Hanna Hakulinen, Goery Genty, Paula Vanninen, Juha Toivonen
Summary: High-profile assassination attempts have underscored the need for high-performance and field-deployable nerve agent (NA) sensors. In this study, a novel optical sensor based on Fourier transform spectroscopy and cantilever-enhanced photoacoustic detection was developed for the detection of gaseous NAs. The sensor demonstrated fast multi-species gas sensing with high sensitivity and selectivity in a small sample volume, which is advantageous for field analysis of limited NA samples. Future improvements could be achieved by developing more powerful supercontinuum light sources in the mid-infrared region.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Analytical
Carlos Cruz, Daniel Matatagui, Cristina Ramirez, Isidro Badillo-Ramirez, Emmanuel de la O-cuevas, Jose M. Saniger, Mari Carmen Horrillo
Summary: In this research, a compact electronic nose based on a shear horizontal surface acoustic wave sensor array is proposed for the detection, classification, and discrimination of NO2 and other toxic chemicals. Carbon-based nanostructured materials are used as the sensitive layer, and machine learning techniques are employed to enhance the detection and discrimination capabilities. The small dimensions and low cost of this system make it a promising candidate for on-site NO2 discrimination.
Article
Chemistry, Analytical
Daniel Matatagui, Agatha Bastida, M. Carmen Horrillo
Summary: The study introduced a label-free time efficient biosensor for real-time recognition of growth factors. The sensor utilized shear horizontal surface acoustic wave (SH-SAW) immunosensor and a microfluidic chip, and demonstrated the potential for rapid recognition of biomolecules.
Article
Biochemistry & Molecular Biology
Yasser H. Ochoa-Munoz, Ruby Mejia de Gutierrez, Jorge E. Rodriguez-Paez, Isabel Gracia, Stella Vallejos
Summary: In this study, the gas-sensing properties of porous ceramic bodies formed by slip casting technique were investigated using perovskite nanoparticles. The results showed that ZnSnO3 sensors exhibited high sensitivity and repeatability, as well as good selectivity and stability towards acetone.
Article
Chemistry, Multidisciplinary
Daniel Matatagui, Carlos Cruz, Felix Carrascoso, Abdullah M. Al-Enizi, Ayman Nafady, Andres Castellanos-Gomez, Maria del Carmen Horrillo
Summary: We developed low-cost and disposable gas sensors with a low environmental impact. These sensors are based on biodegradable paper substrate and use safe electronic materials. The sensors utilize WS2 nanoplatelets deposited on paper through abrasion as a sensing layer, demonstrating high sensitivity and selectivity even at room temperature. The sensors exhibit a significant drop in electrical resistance upon NO2 adsorption, making them promising candidates for on-site continuous monitoring of NO2.
Article
Chemistry, Analytical
N. Sola-Penaftel, X. Manyosa, E. Navarrete, J. Ramos-Castro, V. Jimenez, S. Bermejo, I. Gracia, E. Llobet, M. Dominguez-Pumar
Summary: The objective of this study is to improve the response time of MOX gas sensors by applying a closed-loop control based on dielectric excitation. This control method implements a feedback loop that keeps the sensor reactance constant by modulating the temperature. The required fast temperature switching is achieved on MEMS microhotplates.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Alvaro Pena, Juan Diego Aguilera, Daniel Matatagui, Patricia de la Presa, Carmen Horrillo, Antonio Hernando, Pilar Marin
Summary: Magnetoelastic resonance-based gas sensors (MEGSs) show great potential for non-invasive, fast, and highly reproducible gas detection. A real-time monitoring method for resonance frequency is proposed and validated in real-time monitoring of gaseous biomarkers. The device demonstrated low-noise, fast response to humidity, ammonia, and acetone, particularly valuable for biomedical applications.
Article
Nanoscience & Nanotechnology
Jesus Lopez-Sanchez, Alvaro Pena, Aida Serrano, Adolfo del Campo, Oscar Rodriguez de la Fuente, Noemi Carmona, Daniel Matatagui, Maria del Carmen Horrillo, Juan Rubio-Zuazo, Elena Navarro, Pilar Marin
Summary: Defective few-layered graphene mesostructures (DFLGMs) are produced from graphite flakes by high-energy milling processes, providing a functional material for microwave absorption purposes. By combining them with amorphous Fe73.5Si13.5B9Cu1Nb microwires (MWs), an improvement in reflection loss coefficient (RLmin) of 47% (-53.08 dB) and an enhancement in effective absorption bandwidth (EAB) of 137% (4 dB) are achieved compared to MW-based paints.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Alvaro Pena, Daniel Matatagui, Filiberto Ricciardella, Leandro Sacco, Sten Vollebregt, Daniel Otero, Jesus Lopez-Sanchez, Pilar Marin, Mari Carmen Horrillo
Summary: This article presents a study on improving the detection sensitivity, recovery, and reproducibility of graphene-based gas sensors for NO2 using UV-assisted technology. The results show that UV irradiation significantly enhances the sensor response and enables complete restoration of the initial state after exposure to the target gas. By optimizing the power densities of UV irradiation and the types of target gases, the sensors are suitable for widespread environmental applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Jose R. Fragoso-Mora, Oleg Kolokoltsev, Cesar L. Ordon, Naser Qureshi, Olexander E. Martynyuk, Maria del Carmen Horrillo, Daniel Matatagui
Summary: We present theoretical and experimental results on the losses and confinement of spin waves in a multilayer structure consisting of a Ferro-magnetic layer, a Normal Metal layer, an Air layer, and a Ferrite layer. We show that inserting a screening Normal Metal layer between the SW waveguide and the ferromagnetic layer can significantly reduce the SW losses. Moreover, we find that the SW amplitude increases within the air gap between the Ferrite film and the Normal Metal layer when the gap satisfies the relation kd =1, where k is the SW wavenumber. The power flow density at the Ferrite/Air interface is maximal when the air gap is equal to a quarter wavelength of the SW.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(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)
