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3D-Printed Sensor Array of Semiconducting Oxides

SIEBERT, L.; TERASA, M. I.; ABABII, N.; LUPAN, O.; ADELUNG, R. (Tehnica UTM, 2019)

Sensors start to play an ever increasing role in human life and new technologies for their cost-effective mass production are required. In this work, the one-step 3D-printing of nanoflakes - nanowire covered Fe2O3/Fe - ...
Acoustic properties of cylindrical nanowires with the elastically dissimilar barriers

NIKA, Denis L.; POKATILOV, Evgenii P.; BALANDIN, Alexander A. (Technical University of Moldova, 2005)

We have theoretically investigated the effect of the coating made of the elastically dissimilar material on the acoustic phonon properties of semiconductor nanowires. It is shown that the acoustic impedance mismatch at the ...
Acoustical properties of rectangular quantum heterowires with clamped outer surfaces

ZINCENCO, Nadejda D.; NIKA, Denis L.; Al-SABAYLEH, Moayad (Technical University of Moldova, 2005)

We had been theoretically studied the acoustic phonon spectra and group velocities of the phonons in the rectangular GaN nanowire with clamped outer surfaces, covered with elastically dissimilar barriers. The elastic ...
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 ...
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 ...
Band Gap Size Dependence of Topological Insulator Bi2Te3 Nanotube

BEJENARI, Igor; KANTSER, Valeriu (Technical University of Moldova, 2011)

We study the electronic structure of a cylindrical nanotube made of a topological insulator Bi2Te3. The calculation was made in the framework of the kp theory near the Γ point of the surface Brilloiun zone. A band gap size ...
Blue-red electroluminescence from hybrid Eu:phosphors/ZnO-nanowires/p-GaN LED

VIANA, B.; PAUPORTE, T.; LUPAN, O.; DEVIS, L.; GACOIN, T. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2014)

Nanowire (NW) based light emitting diodes (LEDs) have drawn great research interest due to many advantages compared to thin film based devices. Marked improved performances are expected from nanostructured active layers ...
Blue-red electroluminescence from hybrid Eu:phosphors/ZnO-nanowires/p-GaN LED

VIANA, B.; PAUPORTE, T.; LUPAN, O.; DEVIS, L.; GACOIN, T. (SPIE, 2021)

Nanowire (NW) based light emitting diodes (LEDs) have drawn great research interest due to many advantages compared to thin film based devices. Marked improved performances are expected from nanostructured active layers ...
Characterization of GaN thin films and Eu-doped GaN nanowires and nanoparticles produced on the basis of Ga2O3 nanomaterial

RUSU, Emil; URSAKI, Veacheslav; CULEAC, Ion; SIMINEL, Anatolii; RAEVSCHI, Simion; VLAZAN, Paulina; NICORICI, Alexandr (Academia de Ştiinţe a Moldovei, 2016)

Due to advantageous properties such as wide bandgap, pronounced chemical and thermal stability, gallium nitride is currently considered as one of the most important semiconductor materials for practical applications. We ...
A comparative study of photoconductivity decay in granular and nanowire ZnO

POSTOLACHE, Vitalie (Academy of Sciences of Moldova, 2016)

A comparative analysis of transient photoconductivity in microgranular ZnO and ZnO nanowires prepared by oxidizing bulk ZnTe and ZnTe nanowires, respectively, is performed in this paper. The measurements are carried out ...
A comparative study of photoconductivity decay in ZnO-based MSM structures and nanowires

RUSU, E.; POSTOLACHE, V.; CURMEI, N.; URSAKI, V. (Academy of Sciences of Moldova, 2016)

Comparative analysis of transient photoconductivity in ZnO-based MSM structures and nanowires is performed in this paper. The measurements are carried out at room temperature in ambient air. The mechanisms of photoconductivity ...
Comparison of Thermal Annealing versus Hydrothermal Treatment Effects on the Detection Performances of ZnO Nanowires

LUPAN, Oleg; MAGARIU, Nicolae; KHALEDIALIDUSTI, Rasoul; MISHRA, Abhishek Kumar; HANSEN, Sandra; KRÜGER, Helge; POSTICA, Vasile; HEINRICH, Helge; VIANA, Bruno; ONO, Luis Katsuya; CUENYA, Beatriz Roldan; CHOW, Lee; ADELUNG, Rainer; PAUPORTÉ, Thierry (American Chemical Society, 2021)

A comparative investigation of the post-electroplating treatment influence on the gas detecting performances of single ZnO nanorod/nanowire (NR/NW), as grown by electrochemical deposition (ECD) and integrated into nanosensor ...
Control of HVPE grown GaN nanostruturing by anodization

MONAICO, Ed.; MOISE, C.; MIHAI, G.; ENACHESCU, M.; NIELSCH, K.; URSAKI, V. V.; TIGINYANU, I. M. (Institutul de Fizică Aplicată, AŞM, 2018)

In this paper, results of a systematic study of morphologies obtained with anodization in HNO3, HCl, and NaCl solutions are presented. It is shown that complex pyramidal structures composed by regions with modulated porosity ...
Controlled Mixed Violet–Blue–Red Electroluminescence from Eu:Nano-Phosphors/ZnO-Nanowires/p-GaN Light-Emitting Diodes

LUPAN, Oleg; VIANA, Bruno; PAUPORTE, Thierry; DHAOUADI, Maroua; PELLE, Fabienne; DEVYS, Lucie; GACOIN, Thierry (American Chemical Society, 2013)

Europium (Eu):Y2O3-nanoparticles/Mg:ZnO-nanowires/p-GaN and (Eu):chelate-based light-emitting diode (LED) structures have been fabricated, showing controlled mixed near-UV, violet, and red electroluminescence from trivalent ...
Controlling the properties of electrodeposited ZnO nanowire arrays for light emitting diode, photodetector and gas sensor applications

PAUPORTÉ, T.; LUPAN, Oleg; VIANA, Bruno; CHOW, Lee; TCHERNYCHEVA, Maria (SPIE, 2014)

Electrochemical deposition (ECD) is a versatile technique for the preparation of ZnO nanowires (NWs) and nanorods (NRs) with high structural and optical quality. The bandgap of the ZnO NWs can be engineered by doping. ...
Directional and magnetic field enhanced emission of Cu-doped ZnO nanowires/p-GaN heterojunction light-emitting diodes

VIANA, Bruno; LUPAN, Oleg; PAUPORTÉ, Thierry (Society of Photo-Optical Instrumentation Engineers (SPIE), 2011)

The electrochemical deposition technique was used for the preparation of Cu-doped ZnO-nanowire-based emitters. Nanowires of high structural and optical quality were epitaxially grown on p-GaN single crystalline film ...
The effect of surface functionalization and doping on nanowire devices performances

LUPAN, Oleg; CHOW, Lee; TIGINYANU, Ion; SONTEA, Victor; PAUPORTE, Thierry (Technical University of Moldova, 2012)

The paper deals with an important scientific problem of enhancement performances of nanowire-based devices. Zinc oxide nanowires and nanorods were grown by electrochemical deposition and hydrothermal techniques. X-ray ...
Elaborarea nanosenzorilor dintr-un nanofir de ZnO:Eu

LUPAN, Cristian (Universitatea Tehnică a Moldovei, 2022)

Domeniul de cercetare îl constituie aspectele teoretice, practice și științifice de obținere a rețelelor de nanofire de ZnO:Eu, integrarea acestora în nanosenzori, cercetarea și analiza proprietăților morfologice, chimice, ...
Electric Field Assisted-Assembly of Perpendicular Oriented ZnO Nanorods on Si Substrate

LUPAN, O.; CHOW, L.; CHAI, G.; PARK, S.; SCHULTE, A. (NSTI, 2008)

In this work, we report a new electric-field assisted assembly technique used to vertically-align ZnO nanorods on the Si substrate during their growth. In the assembly process, the forces that induce the alignment are a ...
Electrical and thermoelectric properties of semiconducting Bi1-xSbx nanowires

NIKOLAEVA, Albina; KONOPKO, Leonid; HUBER, Tito; BODIUL, Pavel; POPOV, Ivan; MOLOSHNIK, Eugen; RASTEGAEV, Ghennadii (Tehnica UTM, 2013)

In this paper we shall present the results obtained with measurements of transport effects in semiconducting Bi1-xSbx single crystal wires in glass cover, prepared by liquid phase casting, using the improved Ulitovsky ...

Browsing by Subject "nanowires"

Browsing by Subject "nanowires"

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