Article
Engineering, Electrical & Electronic
Mhanna Mhanna, Guangle Zhang, Noushad Kunnummal, Aamir Farooq
Summary: The mid-infrared laser-based sensor is designed for trace detection of benzene at ambient conditions, using a distributed feedback inter-band cascade laser and off-axis cavity-enhanced absorption spectroscopy. Benzene measurements are enabled in the presence of interfering species through a multidimensional linear regression algorithm. The sensor achieved a minimum detection limit of 2 ppb for benzene at an integration time of 6 seconds.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Rafael Perez-Campos, Jose Fayos-Fernandez, Juan Monzo-Cabrera
Summary: This study used a modified microwave oven to devulcanize ground-tire rubber (GTR) and evaluated the effectiveness of the process by measuring mass loss, soluble fraction, and electric permittivity. Results showed a direct relationship between volatile sulphur compound concentrations and mass loss, soluble fraction, and permittivity values, indicating that monitoring volatile sulphur compounds can provide a reliable indication of devulcanization progress.
Article
Engineering, Electrical & Electronic
Md. Asiful Islam, John L. Volakis
Summary: A new imaging method utilizing a body-worn radio-frequency sensor for continuous real-time monitoring of deep human tissues is proposed. The method overcomes challenges such as image resolution and uncertainty in body shape, and has potential applications in diseases prevention, brain functionality imaging, and gastric emptying monitoring. Experimental results demonstrate the effectiveness of the sensor in various imaging scenarios.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Claudia Post, Simon Brulisauer, Kryss Waldschlaeger, William Hug, Luis Grueneis, Niklas Heyden, Sebastian Schmor, Aaron Foerderer, Ray Reid, Michael Reid, Rohit Bhartia, Quoc Nguyen, Holger Schuettrumpf, Florian Amann
Summary: This study explores the feasibility of using a deep UV Raman spectrometer to detect nitrate/nitrite, pharmaceuticals, and microplastics in water systems. Software utilizing artificial intelligence can recognize typical spectral patterns of pollutants, supporting real-time monitoring. However, challenges such as noise-to-signal ratio and heterogeneous distribution of microplastic particles in flow experiments impact the detection accuracy.
Article
Chemistry, Analytical
Dominic Klyve, James H. Anderson Jr, George Lorentz, Virend K. Somers
Summary: With the increasing costs of healthcare and the growing demand for remote physiologic monitoring and care delivery, there is a need for affordable, accurate, and non-invasive continuous measures of blood analytes. The Bio-RFID sensor, based on radio frequency identification technology, has been developed to penetrate inanimate surfaces, capture data, and convert it into meaningful physiological information. Groundbreaking proof-of-principle studies have shown that the Bio-RFID sensor can accurately measure various concentrations of analytes in deionized water, suggesting its potential for non-invasive measurement and identification of analytes in vitro.
Article
Chemistry, Analytical
Ilaria Frau, Stephen Wylie, Patrick Byrne, Patrizia Onnis, Jeff Cullen, Alex Mason, Olga Korostynska
Summary: The study presents a novel technique based on microwave spectroscopy and planar sensors for in situ real-time water quality monitoring, successfully detecting the water pollution level in contaminated mining areas.
Article
Engineering, Electrical & Electronic
Yujie Yang, Yizhang Wen, Zixing He, Jianjun Zhao
Summary: Compared to chemical methods, absorption spectroscopy can monitor chemical oxygen demand (COD) in real-time without causing pollution. However, it is challenging to perform low-power-consumption, long-term, fast, and accurate COD monitoring in open waters. This study proposes a COD sensor with low-power-consumption, long-term, real-time monitoring capabilities. The sensor has a sensitivity of 0.0083 (mg/L)(-1), a resolution of 0.08 mg/L, and a power consumption of approximately 0.0505 mAh per cycle. A compensation method for temperature and natural light is also proposed to improve measurement accuracy. Experimental results in the Back Lake show that the measurement error is less than 1.6 mg/L after compensation compared to 5 mg/L before compensation.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Chemistry, Multidisciplinary
Zijian An, QiQi Fu, Jingjiang Lv, Tao Zhou, Yue Wu, Yanli Lu, Guang Liu, Zhenghan Shi, Xin li, Fenni Zhang, Qingjun Liu
Summary: Self-power wearable electronics have the potential to overcome battery limitations through harvesting energy from the environment or the human body. This study presents a wireless monitoring system driven entirely by body heat, utilizing a stretchable TEG to optimize power density and enable continuous operation of wireless wearable devices. The system demonstrates real-time monitoring of heart rate, sweat ingredients, and body motion. This advancement in self-powered wearable electronics marks a significant step towards wireless real-time health monitoring.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Austin Chang, Cameron Uy, Xiao Xiao, Jun Chen
Summary: This article reviews the recent progress of triboelectric nanogenerators in environmental monitoring, with a focus on their applications in air, soil, and water chemical sensing. The technology is of great significance in self-powered environmental monitoring.
Article
Engineering, Electrical & Electronic
Lijuan Su, Jonathan Munoz-Enano, Paris Velez, Pau Casacuberta, Marta Gil, Ferran Martin
Summary: This paper presents a phase-variation microwave sensor using a high-impedance half-wavelength sensing line, useful for dielectric constant measurements and characterization of materials. By increasing the characteristic impedance of the sensing line, the sensitivity to small perturbations is enhanced, resulting in a 2.1 times larger sensitivity compared to traditional matched-line implementations.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Mehdi S. Ferhat, Tulio Honorio, Thierry Bore, Farid Benboudjema, Franck Daout, Eric Vourc'h
Summary: This article monitors the hydration process of cement mortar using calorimetry and microwave reflectometry. The data from both techniques are consistent and a mechanistic model is developed to describe the dielectric properties of the mortar during hydration.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Environmental Sciences
Costas A. Varotsos, Ferdenant A. Mkrtchyan, Vladimir Yu Soldatov
Summary: This work summarizes the main characteristics of atmospheric and hydro-physical parameters of the water surface derived from microwave radiometric data. It presents current knowledge on the emissivity of the atmosphere and water surface in the microwave spectrum, and focuses on remote radio-physical methods related to atmospheric radio-transparency. The work also includes examples of water surface classification using specific software modules, analyzes statistical characteristics of radio-brightness temperatures, and suggests the possibility of using these characteristics to detect abnormal phenomena on the water surface.
Article
Automation & Control Systems
Zhao Wu, Chao Wang, Linyun Xiong, Ruiheng Li, Tao Wu, Huaiqing Zhang
Summary: In the field of nonintrusive load monitoring (NILM), extensive research has been done on both hardware and load disaggregation algorithms, but there is a lack of publicly available hardware design schemes for real-time load disaggregation, which increases the barrier to entry. This article presents a novel smart socket using easily accessible sensors to enable more researchers to participate in NILM quickly. It combines a time-efficient automatic state detection algorithm and a factorial hidden Markov model to achieve real-time load disaggregation, addressing the issue of requiring extra information in traditional hidden Markov model-based algorithms. Experimental results confirm the efficiency and effectiveness of the proposed smart socket.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Civil
Zhoujing Ye, Ya Wei, Weidong Zhang, Linbing Wang
Summary: This article presents a method to improve the intelligence level of roads by embedding a distributed acceleration sensing node array in the pavement to collect vibration signals generated by vehicles. A set of processing algorithms is proposed to extract traffic information such as vehicle speed, axle numbers, wheelbases, load position, and traffic flows. The acquired traffic information can support intelligent traffic control and road maintenance.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Multidisciplinary
Masoud Baghelani, Navid Hosseini, Mojgan Daneshmand
Summary: This paper addresses the non-contact analysis of multi-component two-phase mixtures including immiscible liquids and solutions simultaneously by a single sensing structure with a wide dynamic range. The innovative measurement procedure of microwave split-ring resonators successfully measured low overall concentration of water as 1%. By employing multiple features such as frequency shifts of various harmonics of the resonator, the developed approach enables analyzing more complex mixtures with low Mean-Square-Errors in the range of 10-5 for the water-brine-oil mixture.
Article
Engineering, Electrical & Electronic
Alex Mason, Matteo Soprani, Olga Korostynska, Abitami Amirthalingam, Jeff Cullen, Magomed Muradov, Estefania Nunez Carmona, Giorgio Sberveglieri, Veronica Sberveglieri, Ahmed Al-Shamma'a
JOURNAL OF SENSORS
(2018)
Article
Food Science & Technology
Bjorg Egelandsdal, Sisay Mebre Abie, Stefania Bjarnadottir, Han Zhu, Hilde Kolstad, Froydis Bjerke, Orjan G. Martinsen, Alex Mason, Daniel Munch
Article
Materials Science, Multidisciplinary
Ilaria Frau, Steve Wylie, Patrick Byrne, Jeff Cullen, Olga Korostynska, Alex Mason
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2019)
Article
Environmental Sciences
I Frau, S. R. Wylie, P. Byrne, J. D. Cullen, O. Korostynska, A. Mason
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2020)
Review
Chemistry, Analytical
Irina Yaroshenko, Dmitry Kirsanov, Monika Marjanovic, Peter A. Lieberzeit, Olga Korostynska, Alex Mason, Ilaria Frau, Andrey Legin
Article
Chemistry, Analytical
Ilaria Frau, Stephen Wylie, Patrick Byrne, Patrizia Onnis, Jeff Cullen, Alex Mason, Olga Korostynska
Summary: The study presents a novel technique based on microwave spectroscopy and planar sensors for in situ real-time water quality monitoring, successfully detecting the water pollution level in contaminated mining areas.
Article
Engineering, Biomedical
Hafiz Wajahat Hassan, Valeria Grasso, Olga Korostynska, Haroon Khan, Jithin Jose, Peyman Mirtaheri
Summary: Medical implants made of biodegradable materials are advantageous for short-term applications such as fracture fixation, as they degrade after healing without long-term side effects. Magnesium implants, in particular, can cause physiological changes in surrounding tissues, requiring both structural and functional assessment. Hybrid analysis incorporating Near Infrared Spectroscopy and photoacoustic imaging technology shows potential for monitoring the degradation process of Mg implants and tissue oxygenation.
MEDICAL ENGINEERING & PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ian de Medeiros Esper, Oleh Smolkin, Maksym Manko, Anton Popov, Pal Johan From, Alex Mason
Summary: Advances in visual sensor devices and computing power are revolutionising the interaction of robots with their environment. However, off-the-shelf cameras often have a limited field of view, requiring the combination of information from multiple cameras. Calibration of each camera's pose in relation to a common coordinate system is necessary for generating complete environment information. This study investigates the performance of three different pose estimation methods for multi-camera perspectives when reconstructing a scene in 3D.
APPLIED SCIENCES-BASEL
(2022)
Review
Engineering, Chemical
Dmytro Romanov, Olga Korostynska, Odd Ivar Lekang, Alex Mason
Summary: This article critically reviews the automation challenges in the meat industry and discusses the potential of human-robot collaboration to overcome these challenges. It highlights the benefits of customized robots in providing a flexible and cost-effective alternative to traditional machinery, but notes the lack of off-the-shelf solutions for all production steps in the red meat industry. The introduction of collaborative robots can improve food safety standards and working conditions, making automation more accessible for smaller production plants.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
A. Mason, D. Romanov, L. E. Cordova-Lopez, O. Korostynska
Summary: Automation is a crucial technology for the future of the meat industry, both in terms of productivity and work environment. This article introduces a smart knife as a tool that provides real-time feedback on contact status and cutting depth with meat, which can contribute to the development of new robotic technologies such as meat factory cells.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Anna Mathew, Hafiz Wajahat Hassan, Olga Korostynska, Frank Westad, Eduarda Mota-Silva, Luca Menichetti, Peyman Mirtaheri
Summary: Biodegradable magnesium-based implants with mechanical properties similar to natural bone have advantages over nonbiodegradable metallic implants. However, monitoring the interaction between magnesium and tissue without interference is challenging. Optical near-infrared spectroscopy, a noninvasive method, can be used to monitor tissue properties. In this study, optical data was collected from cell culture medium and in vivo studies to study the effect of magnesium-based implant disks. Principal component analysis was used for data analysis. Results showed that the optical probe could detect variations in vivo and identify trends in the optical data over two weeks. The complexity of the implant interaction near the interface with the biological medium is the primary challenge of in vivo data analysis.
Article
Ethics
Martha Risnes, Olga Korostynska, Peyman Mirtaheri, Arild Berg
Summary: Wearable, non-invasive, brain-monitoring technologies have the potential to be used outside the laboratory to study the human brain in different and more relevant settings. This study focused on patient experiences with such devices in a rehabilitation context and found that the technology's impact varied depending on the role of the user (health professional, researcher, or patient). The findings emphasized the importance of understanding these differences when assessing the practical applications of novel technologies.
JOURNAL OF RESPONSIBLE INNOVATION
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Alex Mason, Olga Korostynska, Torunn Thauland Haseth, Ole Alvseike, Marianne Sundt Sodring
2019 13TH INTERNATIONAL CONFERENCE ON SENSING TECHNOLOGY (ICST)
(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)