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Browsing Articole ştiinţifice by Subject "gas sensors"

Browsing Articole ştiinţifice by Subject "gas sensors"

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  • Al-Doped ZnO Nanowires by Electrochemical Deposition for Selective VOC Nanosensor and Nanophotodetector 
    PAUPORTÉ, Thierry; LUPAN, Oleg; POSTICA, Vasile; HOPPE, Mathias; CHOW, Lee; ADELUNG, Rainer (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
    Nanomaterials for new nanosensor systems with selective detection of hazardous volatile organic compounds (VOCs) vapors are of great demand nowadays. In this paper, the use in nanosensors of electrochemically deposited ...
  • Al2O3/ZnO Heterostructure-Based Sensors for Volatile Organic Compounds in Safety Applications 
    LUPAN, Oleg; SANTOS-CARBALLAL, David; MAGARIU, Nicolae; MISHRA, Abhishek Kumar; ABABII, Nicolai; KRÜGER, Helge; WOLFF, Niklas; VAHL, Alexander; BODDULURI, Mani Teja; KOHLMANN, Niklas; KIENLE, Lorenz; ADELUNG, Rainer; LEEUW, Nora H. de; HANSEN, Sandra (American Chemical Society, 2022)
    In this work, we demonstrate the sensing properties toward the most common VOCs of columnar Al2O3/ZnO heterolayer-based sensors. We have also developed an approach to tune the sensor selectivity by changing the thickness ...
  • Au-NPs/ZnO Single Nanowire Nanosensors for Health Care Applications 
    POSTICA, Vasile; CAVERS, Heather; ADELUNG, Rainer; PAUPORTÉ, Thierry; CHOW, Lee; LUPAN, Oleg (IEEE, 2020)
    Herein, the room temperature gas sensing properties of a device fabricatedbased on an individual gold nanoparticles (AuNPs)-functionalized zinc oxide nanowire (ZnO NW) is reported. The Au-NPs/ZnO nanowires were depositedusing ...
  • Chalcogenide based gas sensors 
    TSIULYANU, D.; MARIAN, S.; LIESS, H.-D.; EISELE, I. (National Institute of Optoelectronics, Romania, 2003)
    Evidence for direct application of the chalcogenide semiconductors for gas sensing is considered. Two kinds of sensitive thin film structures have been fabricated and studied, using both artificial dimorphite (As4S3) and ...
  • Characterization of tellurium-based films for NO2 detection 
    TSIULYANU, D.; TSIULYANU, A.; LIESS, H.-D.; EISELE, I. (Elsevier, 2005)
    Sensing characteristics of tellurium-based thin films for NO2 monitoring was studied systematically. The influence of contact materials, thermal treatment, temperature and thickness of the samples on the electrical ...
  • CuO/Cu2O Nanostructured Films for Gas Sensors 
    CRETU, Vasilii; ABABII, Nicolai; CHISTRUGA, Alexandru; MAGARIU, Nicolae; POSTICA, Vasile; LUPAN, Oleg (IEEE, 2019)
    The CuO/Cu 2 O nanostructured films were synthesized via a simple chemical solution based method (SCS). The morphological properties were investigated using a scanning electron microscope (SEM). The elaborated sensors based ...
  • Detectors based on Pd-doped and PdO-functionalized ZnO nanostructures 
    POSTICA, V.; LUPAN, O.; ABABII, N.; HOPPE, M.; ADELUNG, R.; CHOW, L.; SONTEA, V.; ASCHEHOUG, P.; VIANA, B.; PAUPORTÉ, Th. (SPIE, 2018)
    In this work, zinc oxide (ZnO) nanostructured films were grown using a simple synthesis from chemical solutions (SCS) approach from aqueous baths at relatively low temperatures (< 95 °C). The samples were doped with Pd ...
  • Development of 2-in-1 Sensors for the Safety Assessment of Lithium-Ion Batteries via Early Detection of Vapors Produced by Electrolyte Solvents 
    LUPAN, Oleg; MAGARIU, Nicolae; SANTOS-CARBALLAL, David; ABABII, Nicolai; OFFERMANN, Jakob; POOKER, Pia; HANSEN, Sandra; SIEBERT, Leonard; LEEUW, Nora H. de; ADELUNG, Rainer (American Chemical Society, 2023)
    In this study, we investigate the gas-sensing capabilities of semiconducting metal oxides for detecting vapors produced by common battery components, such as solvents, salts, or their degassing products. Our main objective ...
  • Dimorphite based gas sensitive thin films 
    MARIAN, S.; POTJE-KAMLOTH, K.; TSIULYANU, D.; LIESS, H.-D. (Elsevier, 2000)
    For the first time it was observed that thin films based on artificial dimorphite (As4S3) exhibit gas sensitivity at room temperature. A sandwich metal-semiconductor-metal (MSM) structure with dimorphite as the semiconducting ...
  • Doping of SnO2 films during spray pyrolysis deposition: influence on gas sensing characteristics and thermal stability of film structure 
    KOROTCENKOV, G.; SCHWANK, J.; BORIS, I.; BLAJA, V. (Institutul de Fizică Aplicată, AŞM, 2006)
    The study of additives’ influence on both the gas sensing characteristics and thermal stability of SnO2 films structure was the main goal of a research. A conception of such approach is based on a statement that the ...
  • Effect of annealing and temperature on the NO2 sensing properties of tellurium based films 
    TSIULYANU, D.; MARIAN, S.; LIESS, H.-D.; EISELE, I. (Elsevier, 2004)
    Influences of temperature and annealing on the electrical and sensing properties toward NO2 of tellurium based films were investigated. The annealing at temperatures more than 100°C causes a sharp decrease both of electrical ...
  • Fabrication of ZnO nanorod-based hydrogen gas nanosensor 
    LUPAN, Oleg; CHAI, Guangyu; CHOW, Lee (ELSEVIER, 2007)
    We report a first work on nanofabrication of hydrogen nanosensor from single ZnO branched nanorods (tripod) using in-situ lift-out technique and performed in the chamber of focused ion beam (FIB) system. Self-assembled ZnO ...
  • Functionalized Pd/ZnO Nanowires for Nanosensors 
    LUPAN, Oleg; POSTICA, Vasile; ADELUNG, Rainer; LABAT, Frédéric; CIOFINI, Ilaria; SCHÜRMANN, Ulrich; KIENLE, Lorenz; CHOW, Lee; VIANA, Bruno; PAUPORTÉ, Thierry (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
    A method for surface doping and functionalization of ZnO nanowires (NWs) with Pd (Pd/ZnO) in a one-step process is presented. The main advantage of this method is to combine the simultaneous growth, surface doping, and ...
  • Ge–As–Te-based gas sensor selective to low NO2 concentrations 
    MARIAN, S.; TSIULYANU, D.; LIESS, H.-D. (Elsevier, 2001)
    A new kind of gas sensor based on chalcogenide glassy semiconductors for the detection of nitrogen dioxide has been investigated. It contains a sandwich metal–semiconductor (Ge–As–Te ternary alloys)–metal structure which ...
  • H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures 
    ABABII, N.; POSTICA, V.; HOPPE, M.; ADELUNG, R.; LUPAN, O.; RAILEAN, S.; PAUPORTÉ, T.; VIANA, B. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2017)
    The most important parameters of gas sensors are sensitivity and especially high selectivity to specific chemical species. To improve these parameters we developed sensor structures based on layered semiconducting oxides, ...
  • Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteries 
    LUPAN, Oleg; ABABII, Nicolai; MISHRA, Abhishek Kumar; BODDULURI, Mani Teja; MAGARIU, Nicolae; Alexander VAHL, Alexander VAHL; KRÜGER, Helge; WAGNER, Bernhard; FAUPEL, Franz; ADELUNG, Rainer; LEEUW, Nora H. de; HANSEN, Sandra (Elsevier, 2021)
    Semiconducting metal oxide - based gas sensors exhibit outstanding sensitivity, although humidity in the analyte typically hampers precise measurements. In this work it was shown that a 5−6 nm thin Al2O3 nano-layer is ...
  • High sensitive tellurium based NO2 gas sensor 
    TSIULYANU, D.; MARIAN, S.; MIRON, V.; LIESS, H.-D. (Elsevier, 2001)
    For the first time it is shown, that tellurium based thin films exhibit high sensitivity to nitrogen dioxide at room temperature. The resistance of the tellurium films decreases reversibly in the presence of NO2. The ...
  • High-Performance Gas Sensors Using Heterostructures based on Binary and Ternary Metal Oxides 
    ABABII, Nicolai; BODDULURI, Mani Teja; KRÜGER, Helge; HANSEN, Sandra; POSTICA, Vasile; LUPAN, Oleg; ADELUNG, Rainer (IEEE, 2021)
    The gas sensing properties of heterojunctions based on binary and ternary metal oxides (CuAl 2 O 4 /Al 2 O 3 /CuO/Cu 2 O, ZnAl 2 O 4 /ZnO and Zn 2 SnO 4 ) were investigated in detail and demonstrated excellent sensitivity ...
  • Hybridization of Zinc Oxide Tetrapods for Selective Gas Sensing Applications 
    LUPAN, O.; POSTICA, V.; GRÖTTRUP, J.; MISHRA, A. K.; DE LEEUW, N. H.; CARREIRA, J. F. C.; RODRIGUES, J.; BEN SEDRINE, N.; CORREIA, M. R.; MONTEIRO, T.; CRETU, V.; TIGINYANU, I.; SMAZNA, D.; MISHRA, Y. K.; ADELUNG, R. (American Chemical Society, 2017)
    In this work, the exceptionally improved sensing capability of highly porous three-dimensional (3-D) hybrid ceramic networks toward reducing gases is demonstrated for the first time. The 3-D hybrid ceramic networks are ...
  • Hydrogen sensing behavior of tellurium thin films studied by A.C. measurements 
    TSIULYANU, Dumitru; MOCREAC, Olga (Engineering Society for Corrosion, Belgrade, Serbia, 2013)
    For the first time it is pointed out that tellurium films exhibit sensitivity to H2 at room temperature along with sensitivity to NO2. The hydrogen gas sensing performance of tellurium thin films was investigated by method ...

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