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Yotsumoto M, Matsuo M, Kitahata H, Nakanishi S, Denda M, Nagayama M, Nakata S. Phospholipid Molecular Layer that Enhances Distinction of Odors Based on Artificial Sniffing. ACS Sens 2023; 8:4494-4503. [PMID: 38060767 DOI: 10.1021/acssensors.3c00382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
We propose a novel odor-sensing system based on the dynamic response of phospholipid molecular layers for artificial olfaction. Organisms obtain information about their surroundings based on multidimensional information obtained from sniffing, i.e., periodic perturbations. Semiconductor- and receptor-based odor sensors have been developed previously. However, these sensors predominantly identify odors based on one-dimensional information, which limits the type of odor molecule they can identify. Therefore, the development of odor sensors that mimic the olfactory systems of living organisms is useful to overcome this limitation. In this study, we developed a novel odor-sensing system based on the dynamics of phospholipids that responds delicately to chemical substances at room temperature using multidimensional information obtained from periodic perturbations. Odor molecules are periodically supplied to the phospholipid molecular layer as an input sample. The waveform of the surface tension of the phospholipid molecular layer changes depending on the odor molecules and serves as an output. Such characteristic responses originating from the dynamics of odor molecules on the phospholipid molecular layer can be reproduced numerically. The phospholipid molecular layer amplified the information originating from the odor molecule, and the mechanism was evaluated by using surface pressure-area isotherms. This paper offers a platform for an interface-chemistry-based artificial sniffing system as an active sensor and a novel olfactory mechanism via physicochemical responses of the receptor-independent membranes of the organism.
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Affiliation(s)
- Mai Yotsumoto
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Muneyuki Matsuo
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Hiroyuki Kitahata
- Graduate School of Science, Chiba University, Yayoi-cho 1-33, Inage-ku, Chiba 263-8522, Japan
| | - Shinobu Nakanishi
- Shiseido Global Innovation Center, 1-2-11, Takashima-cho, Nishi-ku, Yokohama, Kanagawa 220-0011, Japan
| | - Mitsuhiro Denda
- Institute for Advanced Study of Mathematical Sciences, 8F High-Rise Wing, Nakano Campus, Meiji University, 4-21-1 Nakano, Nakano-ku, Tokyo 164-8525, Japan
| | - Masaharu Nagayama
- Research Institute for Electronic Science, Hokkaido University, N10 W8, Kita-Ward, Sapporo 060-0810, Japan
| | - Satoshi Nakata
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
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Dervieux E, Théron M, Uhring W. Carbon Dioxide Sensing-Biomedical Applications to Human Subjects. SENSORS (BASEL, SWITZERLAND) 2021; 22:188. [PMID: 35009731 PMCID: PMC8749784 DOI: 10.3390/s22010188] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 12/13/2021] [Accepted: 12/20/2021] [Indexed: 02/06/2023]
Abstract
Carbon dioxide (CO2) monitoring in human subjects is of crucial importance in medical practice. Transcutaneous monitors based on the Stow-Severinghaus electrode make a good alternative to the painful and risky arterial "blood gases" sampling. Yet, such monitors are not only expensive, but also bulky and continuously drifting, requiring frequent recalibrations by trained medical staff. Aiming at finding alternatives, the full panel of CO2 measurement techniques is thoroughly reviewed. The physicochemical working principle of each sensing technique is given, as well as some typical merit criteria, advantages, and drawbacks. An overview of the main CO2 monitoring methods and sites routinely used in clinical practice is also provided, revealing their constraints and specificities. The reviewed CO2 sensing techniques are then evaluated in view of the latter clinical constraints and transcutaneous sensing coupled to a dye-based fluorescence CO2 sensing seems to offer the best potential for the development of a future non-invasive clinical CO2 monitor.
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Affiliation(s)
- Emmanuel Dervieux
- BiOSENCY, 1137a Avenue des Champs Blancs, 35510 Cesson-Sévigné, France
| | - Michaël Théron
- ORPHY, Université de Bretagne Occidentale, 6 Avenue Victor le Gorgeu, 29238 Brest, France;
| | - Wilfried Uhring
- ICube, University of Strasbourg and CNRS, 23 rue du Loess, CEDEX, 67037 Strasbourg, France;
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3
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Balan T, Dumitru C, Dudnik G, Alessi E, Lesecq S, Correvon M, Passaniti F, Licciardello A. Smart Multi-Sensor Platform for Analytics and Social Decision Support in Agriculture. SENSORS 2020; 20:s20154127. [PMID: 32722210 PMCID: PMC7436003 DOI: 10.3390/s20154127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/20/2020] [Accepted: 07/13/2020] [Indexed: 11/17/2022]
Abstract
Smart agriculture based on new types of sensors, data analytics and automation, is an important enabler for optimizing yields and maximizing efficiency to feed the world’s growing population while limiting environmental pollution. The aim of this paper is to describe a multi-sensor Internet of Things (IoT) system for agriculture consisting of a soil probe, an air probe and a smart data logger. The implementation details will focus of the integration element and the innovative Artificial Intelligence based gas identification sensor. Furthermore, the paper focuses on the analytics and decision support system implementation that provides farming recommendations and is enhanced with a feedback loop from farmers and a social trust index that will increase the reliability of the system.
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Affiliation(s)
- Titus Balan
- Atos Convergence Creators, 500090 Brasov, Romania;
- Correspondence:
| | | | - Gabriela Dudnik
- Centre Suisse d’Electronique et de Microtechnique, 2000 Neuchâtel, Switzerland; (G.D.); (M.C.)
| | - Enrico Alessi
- ST Microelectronics, Ct-95129 Catania, Italy; (E.A.); (F.P.); (A.L.)
| | - Suzanne Lesecq
- University Grenoble Alpes, CEA, LIST, F-38000 Grenoble, France;
| | - Marc Correvon
- Centre Suisse d’Electronique et de Microtechnique, 2000 Neuchâtel, Switzerland; (G.D.); (M.C.)
| | - Fabio Passaniti
- ST Microelectronics, Ct-95129 Catania, Italy; (E.A.); (F.P.); (A.L.)
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Gallium Nitride (GaN) Nanostructures and Their Gas Sensing Properties: A Review. SENSORS 2020; 20:s20143889. [PMID: 32668634 PMCID: PMC7412445 DOI: 10.3390/s20143889] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 07/03/2020] [Accepted: 07/10/2020] [Indexed: 12/27/2022]
Abstract
In the last two decades, GaN nanostructures of various forms like nanowires (NWs), nanotubes (NTs), nanofibers (NFs), nanoparticles (NPs) and nanonetworks (NNs) have been reported for gas sensing applications. In this paper, we have reviewed our group’s work and the works published by other groups on the advances in GaN nanostructures-based sensors for detection of gases such as hydrogen (H2), alcohols (R-OH), methane (CH4), benzene and its derivatives, nitric oxide (NO), nitrogen dioxide (NO2), sulfur-dioxide (SO2), ammonia (NH3), hydrogen sulfide (H2S) and carbon dioxide (CO2). The important sensing performance parameters like limit of detection, response/recovery time and operating temperature for different type of sensors have been summarized and tabulated to provide a thorough performance comparison. A novel metric, the product of response time and limit of detection, has been established, to quantify and compare the overall sensing performance of GaN nanostructure-based devices reported so far. According to this metric, it was found that the InGaN/GaN NW-based sensor exhibits superior overall sensing performance for H2 gas sensing, whereas the GaN/(TiO2–Pt) nanowire-nanoclusters (NWNCs)-based sensor is better for ethanol sensing. The GaN/TiO2 NWNC-based sensor is also well suited for TNT sensing. This paper has also reviewed density-functional theory (DFT)-based first principle studies on the interaction between gas molecules and GaN. The implementation of machine learning algorithms on GaN nanostructured sensors and sensor array has been analyzed as well. Finally, gas sensing mechanism on GaN nanostructure-based sensors at room temperature has been discussed.
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Hyodo T, Shimizu Y. Adsorption/Combustion-type Micro Gas Sensors: Typical VOC-sensing Properties and Material-design Approach for Highly Sensitive and Selective VOC Detection. ANAL SCI 2020; 36:401-411. [PMID: 32062633 DOI: 10.2116/analsci.19r011] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Highly sensitive and selective detection of various volatile organic compounds (VOCs) has been most needed in a wide range of fields, such as medical diagnosis, health supervision, industry-process control, and environmental monitoring. Since a semiconductor-type gas sensor is a typical promising candidate among various portable VOC-sensing devices, many efforts on developing these gas sensors are introduced in this article for the first time. Through some development stages, it has been well known that the temperature-modulated operation of gas sensors is one of effective ways to improve the magnitude of VOC responses. On the other hand, catalytic combustion-type gas sensors operated with a mode of pulse-driven heating were developed in the early 2000s, and they are named as "adsorption/combustion-type gas sensors" after their gas-sensing mechanism, based on the combustion of VOC adsorbates on the sensing material. The representative VOC-sensing properties of the adsorption/combustion-type gas sensors and recent material-design approach to achieve highly sensitive and selective VOC detection are summarized in this article.
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Affiliation(s)
- Takeo Hyodo
- Graduate School of Engineering, Nagasaki University
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Potyrailo RA. Multivariable Sensors for Ubiquitous Monitoring of Gases in the Era of Internet of Things and Industrial Internet. Chem Rev 2016; 116:11877-11923. [DOI: 10.1021/acs.chemrev.6b00187] [Citation(s) in RCA: 224] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Manes G, Collodi G, Gelpi L, Fusco R, Ricci G, Manes A, Passafiume M. Realtime Gas Emission Monitoring at Hazardous Sites Using a Distributed Point-Source Sensing Infrastructure. SENSORS 2016; 16:s16010121. [PMID: 26805832 PMCID: PMC4732154 DOI: 10.3390/s16010121] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/14/2016] [Accepted: 01/14/2016] [Indexed: 11/16/2022]
Abstract
This paper describes a distributed point-source monitoring platform for gas level and leakage detection in hazardous environments. The platform, based on a wireless sensor network (WSN) architecture, is organised into sub-networks to be positioned in the plant's critical areas; each sub-net includes a gateway unit wirelessly connected to the WSN nodes, hence providing an easily deployable, stand-alone infrastructure featuring a high degree of scalability and reconfigurability. Furthermore, the system provides automated calibration routines which can be accomplished by non-specialized maintenance operators without system reliability reduction issues. Internet connectivity is provided via TCP/IP over GPRS (Internet standard protocols over mobile networks) gateways at a one-minute sampling rate. Environmental and process data are forwarded to a remote server and made available to authenticated users through a user interface that provides data rendering in various formats and multi-sensor data fusion. The platform is able to provide real-time plant management with an effective; accurate tool for immediate warning in case of critical events.
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Affiliation(s)
- Gianfranco Manes
- Department of Information Engineering (DINFO), Università di Firenze, via Santa Marta 3 50139 Firenze, Italy.
| | - Giovanni Collodi
- Department of Information Engineering (DINFO), Università di Firenze, via Santa Marta 3 50139 Firenze, Italy.
| | | | - Rosanna Fusco
- Eni Spa; Piazzale Enrico Mattei, 1 00144 Roma, Italy.
| | | | - Antonio Manes
- Netsens Srl, via S.Pertini 93 50019 Sesto Fiorentino (Fi), Italy.
| | - Marco Passafiume
- Department of Information Engineering (DINFO), Università di Firenze, via Santa Marta 3 50139 Firenze, Italy.
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Vergara A, Benkstein KD, Montgomery C, Semancik S. Demonstration of fast and accurate discrimination and quantification of chemically similar species utilizing a single cross-selective chemiresistor. Anal Chem 2014; 86:6753-7. [PMID: 24931319 PMCID: PMC4215855 DOI: 10.1021/ac501490k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/16/2014] [Indexed: 01/28/2023]
Abstract
Performance characteristics of gas-phase microsensors will determine the ultimate utility of these devices for a wide range of chemical monitoring applications. Commonly employed chemiresistor elements are quite sensitive to selected analytes, and relatively new methods have increased the selectivity to specific compounds, even in the presence of interfering species. Here, we have focused on determining whether purposefully driven temperature modulation can produce faster sensor-response characteristics, which could enable measurements for a broader range of applications involving dynamic compositional analysis. We investigated the response speed of a single chemiresitive In2O3 microhotplate sensor to four analytes (methanol, ethanol, acetone, 2-butanone) by systematically varying the oscillating frequency (semicycle periods of 20-120 ms) of a bilevel temperature cycle applied to the sensing element. It was determined that the fastest response (≈ 9 s), as indicated by a 98% signal-change metric, occurred for a period of 30 ms and that responses under such modulation were dramatically faster than for isothermal operation of the same device (>300 s). Rapid modulation between 150 and 450 °C exerts kinetic control over transient processes, including adsorption, desorption, diffusion, and reaction phenomena, which are important for charge transfer occurring in transduction processes and the observed response times. We also demonstrate that the fastest operation is accompanied by excellent discrimination within a challenging 16-category recognition problem (consisting of the four analytes at four separate concentrations). This critical finding demonstrates that both speed and high discriminatory capabilities can be realized through temperature modulation.
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Affiliation(s)
- Alexander Vergara
- Biomolecular
Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8362, United States
- Laboratory of Cellular and Synaptic Neurophysiology, National Institute
of Child Health and Human Development, National
Institutes of Health, Bethesda, Maryland 20892, United States
| | - Kurt D. Benkstein
- Biomolecular
Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8362, United States
| | - Christopher
B. Montgomery
- Biomolecular
Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8362, United States
| | - Steve Semancik
- Biomolecular
Measurement Division, Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8362, United States
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Vergara A, Calavia R, Vázquez RM, Mozalev A, Abdelghani A, Huerta R, Hines EH, Llobet E. Multifrequency Interrogation of Nanostructured Gas Sensor Arrays: A Tool for Analyzing Response Kinetics. Anal Chem 2012; 84:7502-10. [DOI: 10.1021/ac301506t] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alexander Vergara
- BioCircuits Institute, University of California San Diego, La Jolla, California
92093-0402, United States
| | - Raul Calavia
- Microsystems and Nanotechnologies
for Chemical Analysis−Research Centre on Engineering of Materials
and Micro/nanosystems, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Rosa María Vázquez
- Microsystems and Nanotechnologies
for Chemical Analysis−Research Centre on Engineering of Materials
and Micro/nanosystems, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Alexander Mozalev
- Laboratory of Microsensors and
Nanotechnology, Department of Microelectronics, Brno University of Technology, 616 00 Brno, Czech Republic
| | - Adnane Abdelghani
- Nanotechnology Laboratory, National
Institute of Applied Science and Technology, Carthage University, 1080 Charguia, Tunisia
| | - Ramón Huerta
- BioCircuits Institute, University of California San Diego, La Jolla, California
92093-0402, United States
| | - Evor H. Hines
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Eduard Llobet
- Microsystems and Nanotechnologies
for Chemical Analysis−Research Centre on Engineering of Materials
and Micro/nanosystems, Universitat Rovira i Virgili, 43007 Tarragona, Spain
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Vergara A, Llobet E. Sensor selection and chemo-sensory optimization: toward an adaptable chemo-sensory system. FRONTIERS IN NEUROENGINEERING 2012; 4:19. [PMID: 22319492 PMCID: PMC3250696 DOI: 10.3389/fneng.2011.00019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Accepted: 12/08/2011] [Indexed: 11/13/2022]
Abstract
Over the past two decades, despite the tremendous research on chemical sensors and machine olfaction to develop micro-sensory systems that will accomplish the growing existent needs in personal health (implantable sensors), environment monitoring (widely distributed sensor networks), and security/threat detection (chemo/bio warfare agents), simple, low-cost molecular sensing platforms capable of long-term autonomous operation remain beyond the current state-of-the-art of chemical sensing. A fundamental issue within this context is that most of the chemical sensors depend on interactions between the targeted species and the surfaces functionalized with receptors that bind the target species selectively, and that these binding events are coupled with transduction processes that begin to change when they are exposed to the messy world of real samples. With the advent of fundamental breakthroughs at the intersection of materials science, micro- and nano-technology, and signal processing, hybrid chemo-sensory systems have incorporated tunable, optimizable operating parameters, through which changes in the response characteristics can be modeled and compensated as the environmental conditions or application needs change. The objective of this article, in this context, is to bring together the key advances at the device, data processing, and system levels that enable chemo-sensory systems to "adapt" in response to their environments. Accordingly, in this review we will feature the research effort made by selected experts on chemical sensing and information theory, whose work has been devoted to develop strategies that provide tunability and adaptability to single sensor devices or sensory array systems. Particularly, we consider sensor-array selection, modulation of internal sensing parameters, and active sensing. The article ends with some conclusions drawn from the results presented and a visionary look toward the future in terms of how the field may evolve.
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Affiliation(s)
- Alexander Vergara
- BioCircuits Institute, University of California San DiegoLa Jolla, CA, USA
| | - Eduard Llobet
- Department of Electronic Engineering, MINOS–EMaS, University Rovira i VirgiliTarragona, Spain
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Bahraminejad B, Basri S, Isa M, Hambli Z. Real-time gas identification by analyzing the transient response of capillary-attached conductive gas sensor. SENSORS 2010; 10:5359-77. [PMID: 22219666 PMCID: PMC3247711 DOI: 10.3390/s100605359] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2010] [Revised: 04/29/2010] [Accepted: 04/30/2010] [Indexed: 11/29/2022]
Abstract
In this study, the ability of the Capillary-attached conductive gas sensor (CGS) in real-time gas identification was investigated. The structure of the prototype fabricated CGS is presented. Portions were selected from the beginning of the CGS transient response including the first 11 samples to the first 100 samples. Different feature extraction and classification methods were applied on the selected portions. Validation of methods was evaluated to study the ability of an early portion of the CGS transient response in target gas (TG) identification. Experimental results proved that applying extracted features from an early part of the CGS transient response along with a classifier can distinguish short-chain alcohols from each other perfectly. Decreasing time of exposition in the interaction between target gas and sensing element improved the reliability of the sensor. Classification rate was also improved and time of identification was decreased. Moreover, the results indicated the optimum interval of the early transient response of the CGS for selecting portions to achieve the best classification rates.
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Affiliation(s)
- Behzad Bahraminejad
- Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mail:
| | - Shahnor Basri
- Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mail:
- Faculty of Engineering, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +60-389-466-388; Fax: +60-386-567-125
| | - Maryam Isa
- Faculty of Engineering, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mail:
| | - Zarida Hambli
- Faculty of Medical Science, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mail:
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Nakata S, Kashima K. Distinguishing Among Gases with a Semiconductor Sensor Depending on the Frequency Modulation of a Cyclic Temperature. ELECTROANAL 2010. [DOI: 10.1002/elan.201000034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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El Barbri N, Duran C, Brezmes J, Cañellas N, Ramírez JL, Bouchikhi B, Llobet E. Selectivity Enhancement in Multisensor Systems Using Flow Modulation Techniques. SENSORS 2008; 8:7369-7379. [PMID: 27873934 PMCID: PMC3787450 DOI: 10.3390/s8117369] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 11/11/2008] [Accepted: 11/11/2008] [Indexed: 11/16/2022]
Abstract
In this paper, the use of a new technique to obtain transient sensor information is introduced and its usefulness to improve the selectivity of metal oxide gas sensors is discussed. The method is based on modulating the flow of the carrier gas that brings the species to be measured into the sensor chamber. In such a way, the analytes' concentration at the surface of the sensors is altered. As a result, reproducible patterns in the sensor response develop, which carry important information for helping the sensor system, not only to discriminate among the volatiles considered but also to semi-quantify them. This has been proved by extracting features from sensor dynamics using the discrete wavelet transform (DWT) and by building and validating support vector machine (SVM) classification models. The good results obtained (100% correct identification among 5 volatile compounds and nearly a 89% correct simultaneous identification and quantification of these volatiles), which clearly outperform those obtained when the steady-state response is used, prove the concept behind flow modulation.
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Affiliation(s)
- Noureddine El Barbri
- Sensor Electronic & Instrumentation Group, Faculty of Sciences, Physics Department, Moulay Ismaïl University, Meekness, Morocco.
| | - Cristhian Duran
- Department of Electronic Engineering, University of Pamplona, Pamplona, Colombia.
- MINOS, Department of Electronic Engineering, University Rovira i Virgili, Tarragona, Spain.
| | - Jesús Brezmes
- MINOS, Department of Electronic Engineering, University Rovira i Virgili, Tarragona, Spain.
| | - Nicolau Cañellas
- MINOS, Department of Electronic Engineering, University Rovira i Virgili, Tarragona, Spain.
| | - José Luis Ramírez
- MINOS, Department of Electronic Engineering, University Rovira i Virgili, Tarragona, Spain.
| | - Benachir Bouchikhi
- Sensor Electronic & Instrumentation Group, Faculty of Sciences, Physics Department, Moulay Ismaïl University, Meekness, Morocco.
| | - Eduard Llobet
- MINOS, Department of Electronic Engineering, University Rovira i Virgili, Tarragona, Spain.
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15
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Nakata S, Okunishi H, Nakashima Y. Distinction of gases with a semiconductor sensor depending on the scanning profile of a cyclic temperature. Analyst 2005; 131:148-54. [PMID: 16365676 DOI: 10.1039/b509996j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A gas-sensing system based on a dynamic nonlinear response is reported to improve the selectivity in the sensor response toward sample gases. A cyclic temperature composed of fundamental and second harmonics was applied to a SnO(2) semiconductor gas sensor and the resulting conductance of the sensor was analyzed by fast Fourier transformation (FFT). The dynamic nonlinear responses to the gas species were further characterized depending on the scanning profile of the temperature. These characteristic sensor responses under the application of second-harmonic perturbation were theoretically considered based on a reaction-diffusion model for the semiconductor surface.
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Affiliation(s)
- Satoshi Nakata
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan.
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Abstract
Chemical vapors can be detected by a resonant mass sensor array with selective absorption coatings implementing a frequency encoding method. The sensor array consists of sensor elements with different frequencies for their identifications in the frequency response obtained with a pulse Fourier transform detection scheme. Zero-loading resonance frequencies are chosen so that frequency shift due to absorption is bounded within a predefined region so that there is no overlap of peaks and all peaks can be assigned to the correct elements at any operation conditions. Mechanical oscillations of all or selected numbers of the sensor elements are excited by application of an excitation signal. Free oscillation decay signals from all or selectively excited sensor elements are detected and digitized. The free oscillation decay signal is subjected to a spectral analysis routine converting into a frequency spectrum, in which frequency shifts due to absorption of chemical vapors can be obtained. The implementation of the frequency encoding method with pulse Fourier transform detection to resonant mass sensors allows simultaneous multisensor detection, fast data acquisition speed, high signal-to-noise ratio by coaddition of raw data, flexible excitation, reduced complexity of electronic hardware, application of advanced data/spectral analysis algorithms, and realization of many other advantages by the introduction of the pulse Fourier transform method. A practical chemical vapor sensing system is demonstrated experimentally by use of nine frequency-encoded and polymer-coated sensors.
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Affiliation(s)
- Shenheng Guan
- Palo Alto Sensor Technology Innovation, 879 Newell Place, Palo Alto, California 94303, USA
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Al-Khalifa S, Maldonado-Bascon S, Gardner J. Identification of CO and NO2 using a thermally resistive microsensor and support vector machine. ACTA ACUST UNITED AC 2003. [DOI: 10.1049/ip-smt:20030004] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
Novel chemical sensors based on a time-dependent nonlinear response are reviewed. The strategy is to artificially mimic information transduction in living organisms. In taste and olfaction, information of chemical structure and concentration is transformed into nervous impulses in the nervous cell, i.e., time-dependent multi-dimensional information. Because the excitation and pulse generation in the nervous cell are typically nonlinear phenomena, it may be worthwhile to utilize the nonlinearity as the multi-dimensional information for molecular recognition. The principle of a "nonlinear" sensor is that a sinusoidal modulation is applied to a system, and the output signal is analyzed. The output signal of the sensor is characteristically deformed from the sinusoidal input depending on the chemical structure and concentration of the chemical stimuli. The characteristic nonlinear responses to chemical stimuli are discussed in relation to the kinetics of chemical compounds on the sensor surface. As a practical application, we introduced electrochemical sensors based on the differential capacitance, semiconductor gas sensors under the application of sinusoidal temperature or diffusion change, and a chemical sensor based on the spatio-temporal information. We demonstrated that mutli-dimensional information based on nonlinearity can provide quite useful information for the analysis of chemical species, even in the presence of another analyte or an interference with a single detector.
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Affiliation(s)
- S Nakata
- Department of Chemistry, Nara University of Education, Japan.
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Jurs PC, Bakken GA, McClelland HE. Computational methods for the analysis of chemical sensor array data from volatile analytes. Chem Rev 2000; 100:2649-78. [PMID: 11749299 DOI: 10.1021/cr9800964] [Citation(s) in RCA: 315] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- P C Jurs
- Chemistry Department, Pennsylvania State University, 152 Davey Laboratory, University Park, Pennsylvania 16802
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21
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Kumazawa N, Rafiqul Islam M, Takeuchi M. Photoresponse of a titanium dioxide chemical sensor. J Electroanal Chem (Lausanne) 1999. [DOI: 10.1016/s0022-0728(99)00293-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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22
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Nakata S, Takitani R, Hirata Y. Discrimination of Glucose from Its Interferences Using an Amperometric Sensor Based on Electrochemical Nonlinearity. Anal Chem 1998. [DOI: 10.1021/ac980442h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Satoshi Nakata
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Rie Takitani
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
| | - Yoko Hirata
- Department of Chemistry, Nara University of Education, Takabatake-cho, Nara 630-8528, Japan
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23
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Semancik S, Cavicchi R. Kinetically Controlled Chemical Sensing Using Micromachined Structures. Acc Chem Res 1998. [DOI: 10.1021/ar970071b] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steve Semancik
- Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
| | - Richard Cavicchi
- Chemical Science and Technology Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
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24
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Affiliation(s)
- Jiří Janata
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta, Georgia 30332-0400
| | - Mira Josowicz
- School of Chemistry and Biochemistry, Georgia Institute of Technology Atlanta, Georgia 30332-0400
| | - Petr Vanýsek
- Department of Chemistry, Nothern Illinois University DeKalb, Illinois 60115
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25
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Mitrovics J, Ulmer H, Weimar U, Göpel W. Modular Sensor Systems for Gas Sensing and Odor Monitoring: The MOSES Concept. Acc Chem Res 1998. [DOI: 10.1021/ar970064n] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jan Mitrovics
- Center of Interface Analysis and Sensors, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany
| | - Heiko Ulmer
- Center of Interface Analysis and Sensors, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany
| | - Udo Weimar
- Center of Interface Analysis and Sensors, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany
| | - Wolfgang Göpel
- Center of Interface Analysis and Sensors, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 8, D-72076 Tübingen, Germany
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26
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Nakata S, Hirata Y, Takitani R, Yoshikawa K. Discrimination among Amino Acids Using an Amperometric Biosensor Based on Electrochemical Nonlinearity. CHEM LETT 1998. [DOI: 10.1246/cl.1998.401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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Erdi P, Aradi I, Kato Y, Yoshikawa K. Dynamic information processing in natural and artificial olfactory systems. Biosystems 1998; 46:107-12. [PMID: 9648681 DOI: 10.1016/s0303-2647(97)00087-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A new strategy for building artificial gas sensing systems is suggested based on knowledge of the dynamic response mechanism of the olfactory system. Difficulties with the processing of time-dependent inputs by neural networks are discussed.
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Affiliation(s)
- P Erdi
- Department of Biophysics, KFKI Research Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences, Budapest, Hungary.
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28
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Nakata S, Ozaki E, Ojima N. Gas sensing based on the dynamic nonlinear responses of a semiconductor gas sensor: dependence on the range and frequency of a cyclic temperature change. Anal Chim Acta 1998. [DOI: 10.1016/s0003-2670(98)00013-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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