Browsing 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/CuO non-planar heterostructures for VOCs vapors detection 
    MAGARIU, Nicolae; ABABII, Nicolai; POSTICA, Vasile; MANI, Teja Bodduluri; LUPAN, Oleg; ADELUNG, Rainer; HANSEN, Sandra (Technical University of Moldova, 2021)
    In this work, the gas sensing properties of the non-planar heterostructures based on CuO thin films, grown by the direct ink writing and covered with an ultrathin Al2O3 layer, are presented as a function of the operating ...
  • 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 ...
  • Chalcogenide semiconductors as gas sensors 
    TSIULYANU, Dumitru (Technical University of Moldova, 2005)
    A brief survey of experimental results to gas sensing with chalcogenide semiconductor based devices is given. It is pointed out that physical phenomena such as electrical conductivity can be coupled to chemical reactions ...
  • 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 ...
  • Conductance and Photoconductance of Indium Oxide-Zinc Oxide Composites in the Hydrogen-Containing Atmosphere 
    ILIN, A. S.; FORSH, P. A.; IKIM, M. I.; KOROLEVA, A. V.; MARTYSHOV, M. N.; TRAKHTENBERG, L. I.; KASHKAROV, P. K. (Tehnica UTM, 2019)
    Photovoltaic properties of composites based on nanocrystalline indium and zinc oxides, promising as sensitive elements of gas sensors, were investigated. It is shown that under visible light the conductivity of composites ...
  • CuO-plate decorated ZnO nanostructures and their sensing performances 
    LITRA, Dinu; LUPAN, Cristian; ZADOROJNEAC, Tudor; CHIRIAC, Maxim; DEPRI, Nadine; LUPAN, Oleg; ADELUNG, Rainer; SIEBERT, Leonard (Technical University of Moldova, 2022)
    In this paper, we report on the gas sensing properties of mixed oxide Zn-Cu nanostructures obtained by self-organized chemical deposition are presented. The nanosensors are made from individual ZnO whiskers and are coated ...
  • 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 ...
  • The deposition process of ZnO films doped with Eu and functionalized with Pd 
    LUPAN, Cristian; TROFIM, Viorel (Romanian Inventors Forum, 2020)
    The invention relates to the technology for deposition of semiconductor oxide films, in particular to the process of obtaining of ZnO:Eu3+ films, with application of rapid thermal annealing (T=650 °C, t=60s), with can be ...
  • Designing nanoarchitectures for hydrogen gas sensor applications and device nanofabrication 
    LUPAN, O. (Editura U.T.M., 2007)
    The present work report a new benign growth technique for the ZnO and Cu2O nanoarchitectures as new generation of smart materials. ZnO nanoarchitectures grown from ammonia solution of zinc sulphate permits to be easily ...
  • Detector de gaze optoelectronic 
    DOROGAN, Valerian; VIERU, Tatiana; VIERU, Stanislav; DOROGAN, Andrei; SECRIERU, Vitalie; MUNTEANU, Eugen; BALICA, Ştefan (Universitatea Tehnică din Cluj-Napoca, 2012)
    Detectorul este dotat cu o diodă laser cu emisie verticală şi cu un rezonator optic exterior care asigură propagarea multiplă a radiaţiei laser. Detectarea gazelor din cavitatea rezonatorului exterior se asigură prin ...
  • 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 ...
  • The Device for Conversion and Displaying Ecological Information Using Sensors on the Base of ZnO Films 
    SHISHIANU, S.; VERJBITKI, V.; SHISHIANU, T.; MACHIDON, A. (Technical University of Moldova, 2013)
    Gas-sensors based on ZnO films give an opportunity to measure some parameters of gase-medium in a large band of temperature and pressure. In this article is described the device which allows measuring and imaging on display ...
  • 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 ...
  • Dispozitive pentru măsurarea parametrilor senzorilor pe bază de oxizi semiconductori micro- și nanostructuraţi 
    VERJBIŢKI, Valeri; LUPAN, Oleg; POCROPIVNÎI, Anatol (Agenţia de Stat pentru Proprietatea Intelectuală a Republicii Moldova (AGEPI), 2017)
    O serie de dispozitive portabile autonome bazate pe microprocesoare pentru măsurarea și indicarea concentraţiilor admisibile predeterminate ale diferitelor gaze în medii controlate, utilizând ca senzori de nanostructuri ...
  • 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 ...
  • Efectul funcţionalizării cu nanopuncte de Pd ȘI PdO2 a peliculelor de CuO/Cu2O pentru senzori de gaze explozive și volatile 
    CREŢU, Vasilii; ABABII, Nicolai; POSTICA, Vasile; MAGARIU, Nicolae; TOACĂ, Dan (Agenţia de Stat pentru Proprietatea Intelectuală a Republicii Moldova (AGEPI), 2019)
    Proiectul propus are ca scop realizarea cercetărilor aplicative în domeniul nanotehnologiilor, aplicarea metodelor cost-efective pentru sinteza și caracterizarea nanoheterojoncţiunilor fazelor mixte de CuO/Cu2O, funcţionalizarea ...

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