Browsing by Author "LUPAN, Oleg"

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  • 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu2O/Cu Heterojunction Nets 
    SIEBERT, Leonard; LUPAN, Oleg; MIRABELLI, Mattia; ABABII, Nicolai; TERASA, Maik-Ivo; KAPS, Sören; CRETU, Vasilii; VAHL, Alexander; FAUPEL, Franz; ADELUNG, Rainer (American Chemical Society, 2019)
    In this work, the one-step three-dimensional (3D) printing of 20 nm nanowire (NW)-covered CuO/Cu2O/Cu microparticles (MPs) with diameters of 15–25 μm on the surface of the glass substrate forming an ordered net is successfully ...
  • 3D-Printed Sensors of Nanostructured Semiconducting Oxides 
    LUPAN, Oleg (Universitatea Tehnică a Moldovei, 2021)
    3D printed sensors will play an important role in the world of modern devices and are crucial nowadays due to complexity of mounting on various equipment for the development of biomedical or monitoring systems. Mixing ...
  • Acetone sensors based on Al-Coated and Ni-Doped copper oxide nanocrystalline thin films 
    LITRA, Dinu; CHIRIAC, Maxim; ABABII, Nicolai; LUPAN, Oleg (Multidisciplinary Digital Publishing Institute (MDPI), 2024)
    Acetone detection is of significant importance in various industries, from cosmetics to pharmaceuticals, bioengineering, and paints. Sensor manufacturing involves the use of different semiconductor materials as well as ...
  • Additive Manufacturing as a Means of Gas Sensor Development for Battery Health Monitoring 
    LUPAN, Oleg; KRÜGER, Helge; SIEBERT, Leonard; ABABII, Nicolai; KOHLMANN, Niklas; BUZDUGAN, Artur; BODDULURI, Mani Teja; MAGARIU, Nicolae; TERASA, Maik-Ivo; STRUNSKUS, Thomas; KIENLE, Lorenz; ADELUNG, Rainer; HANSEN, Sandra (MDPI, Basel, Switzerland, 2021)
    Lithium-ion batteries (LIBs) still need continuous safety monitoring based on their intrinsic properties, as well as due to the increase in their sizes and device requirements. The main causes of fires and explosions in ...
  • 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 composite-based sensors for battery safety applications: An experimental and theoretical investigation 
    SANTOS-CARBALLAL, David; LUPAN, Oleg; MAGARIU, Nicolae; ABABII, Nicolai; KRÜGER, Helge; BODDULURI, Mani Teja; LEEUW, Nora H. de; HANSEN, Sandra; ADELUNG, Rainer (Elsevier, 2023)
    Lithium-ion batteries are vital in one of the key nanotechnologies required for the transition to a carbon-free society. As such, they are under constant investigation to improve their performance in terms of energy and ...
  • Al2O3/ZnO composite-based sensors for battery safety applications: An experimental and theoretical investigation 
    SANTOS-CARBALLAL, David; LUPAN, Oleg; MAGARIU, Nicolae; ABABII, Nicolai; KRÜGER, Helge; BODDULURI, Mani Teja; de LEEUW, Nora H.; HANSEN, Sandra; ADELUNG, Rainer (Elsevier, 2023)
    In this work, heterostructures based on semiconductor oxides are employed as sensors for typical components of battery electrolytes and their decomposition products. The sensors showed a significant response to vapors ...
  • 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 ...
  • Analiza și studiul impactului ozonificării țesuturilor prin metode de tratament non-invazive 
    ŢUGULEA, Valeriu (Universitatea Tehnică a Moldovei, 2023)
    Ca urmare a studierii Ozonulului și impactul acestui gaz asupra tratamentului țesuturilor și anume a tratamentului ulcerelor trofice și Sindromul post Trombo Flebitic (SPTF) , care ca urmare tratamentul acestor dezabilități ...
  • Analysis of ZnO-nanorods grown on p-Si (100) via catalystfree hydrothermal deposition 
    LUPAN, Oleg (Technical University of Moldova, 2011)
    This work reports a detailed cleaning procedure for Si to get deposited ZnO at low temperature (95-98°C). Also, it is reported on rapid hydrothermal synthesis technique used to growth ZnO nanorod arrays on p-Si in 15 min. ...
  • Annealing effect on UV detection properties of ZnO:Al structures 
    NAGPAL, Rajat; CHIRIAC, Maxim; SEREACOV, Alexandr; BIRNAZ, Adrian; ABABII, Nicolai; LUPAN, Cristian; BUZDUGAN, Artur; SANDU, Iulia; SIEBERT, Leonard; PAUPORTÉ, Thierry; LUPAN, Oleg (Technical University of Moldova, 2023)
    The aim of this study was to develop low-powered, highly selective UV sensor to continuously monitor personalized UV exposure as well as to study annealing effect on UV detection properties of the sensors. ZnO:Al structures ...
  • 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 ...
  • Buckminsterfullerene hybridized zinc oxide tetrapods: defects and charge transfer induced optical and electrical response 
    SMAZNA, Daria; RODRIGUES, Joana; SHREE, Sindu; POSTICA, Vasile; NEUBÜSER, Gero; MARTINS, A. F.; BEN SEDRINE, N.; JENA, Naresh K.; SIEBERT, Leonard; SCHÜTT, Fabian; LUPAN, Oleg; AHUJA, Rajeev; CORREIA, M. R.; MONTEIRO, Teresa; KIENLE, Lorenz; YANG, Ya; ADELUNG, Rainer; MISHRA, Yogendra Kumar (The Royal Society of Chemistry, 2018)
    Buckminster fullerene (C60) based hybrid metal oxide materials are receiving considerable attention because of their excellent fundamental and applied aspects, like semiconducting, electron transfer, luminescent behaviors, ...
  • Caracterizarea structurală a nanoformațiunilor de Ga2O3 obținute prin tratament termic al monocristalelor Ga2S3 
    UNTILA, Dumitru; SPRINCEAN, Veaceslav; CARAMAN, Mihail; CARAMAN, Iuliana; TIGHINEANU, Ion; COJOCARU, Ala; LUPAN, Oleg; PALACHI, Leonid (Tehnica UTM, 2018)
    Prin tratament termic (TT), în atmosferă normală, al monocristalelor β-Ga2S3, cu rețea cristalină monoclinică, la temperaturi din intervalul 970-1170 K, timp de 3-6 ore, suprafața acestora se acoperă cu un strat omogen de ...
  • Cercetarea oxizilor micști ale metalelor de Zn-Cu pentru dispozitive 
    LITRA, Dinu (Universitatea Tehnică a Moldovei, 2023)
    Scopul lucrării constă în cercetarea senzorilor în baza nanostructurilor mixte de ZnO/CuO cu scopul identificării unor materiale mai eficiente cu proprietăți senzoriale unicale pentru dispozitive. Obiectivele generale: ...
  • Cercetarea proprietăţilor oxidului de staniu obţinut prin oxidarea termică 
    CREŢU, Vasilii; POSTICA, Vasile; RAILEAN, Sergiu; LUPAN, Oleg (Tehnica UTM, 2014)
    Peliculele nanostructurate de oxid de staniu au fost depuse prin metoda pulverizării în vid şi tratamentului termic la temperatura de 600° C în aer. Proprietăţile morfologice, structurale şi vibraţionale au fost investigate ...
  • Cercetarea proprietăţilor senzoriale ale peliculelor nanocristaline de Cu1-xZnxOy 
    CREŢU, Vasilii; POSTICA, Vasile; ABABII, Nicolai; TROFIM, Viorel; SONTEA, Victor; LUPAN, Oleg (Tehnica UTM, 2014)
    Peliculele nanocristaline de Cu1-xZnxOy au fost depuse folosind metoda sintezei chimică din soluţii (SCS). Pentru cercetările senzorice ale peliculelor depuse probele au fost tratate termic în sobă (TA) sau/şi tratate ...
  • Cercetarea senzorilor de compuși volatili în baza heterojoncțiunilor cu pelicule columnare din oxid de zinc 
    ZADOROJNEAC, Tudor (Universitatea Tehnică a Moldovei, 2020)
    Scopul lucrării constă în creșterea, cercetarea și testarea structurilor formate pe heterostructuri din oxizi semiconductori și reacția acestora la diferite gaze. Noutatea şi originalitatea știinifică a rezultatelor obținute ...
  • Characterization of gallium-doped CdS thin films grown by chemical bath deposition 
    KHALLAF, Hani; CHAI, Guangyu; LUPAN, Oleg; CHOW, Lee; PARK, S.; SCHULTE, Alfons (ELSEVIER, 2009)
    Ga-doped CdS thin films, with different [Ga]/[Cd] ratios, were grown using chemical bath deposition. The effect of Ga-doping on optical properties and bandgap of CdS films is investigated. Resistivity, carrier density, and ...

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