Articole din publicaţii internaţionale: Recent submissions

  • Influence of annealing in H atmosphere on the electrical properties of Al2O3 layers grown on p-type Si by the atomic layer deposition technique 
    KOLKOVSKY, Vl.; STÜBNER, R.; LANGA, S.; WENDE, U.; KAISER, B.; CONRAD, H.; SCHENK, H. (ELSEVIER, 2016)
    In the present study the electrical properties of 100nm and 400nm alumina films grown by the atomic layer deposition technique on p-type Si before and after a post-deposition annealing at 440°C and after a dc H plasma ...
  • First Time of nanoscopic electrostatic drives pushing for ultrasonic transmission for gesture recognition 
    GUARACAO, J. M. M.; KIRCHER, M.; WALL, F.; KRENKEL, M.; KAISER, B.; LANGA, S.; SCHENK, H. (IEEE, 2020)
    The design, fabrication, and acoustic characterization of an electrostatic ultrasound transducer based on lateral actuation is documented in this letter. Unlike cMUTs or pMUTs, this device-NED-MUT -does not use a membrane ...
  • Fast pore etching 
    FREY, S.; KEMELL, M.; CARSTENSEN, J.; LANGA, S.; FÖLL, H. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2005)
    The growth of silicon macropores under high current densities and high HF concentrations is studied. A new growth mode for porous Si has been found where pores resemble the so-called current line oriented pores previously ...
  • Enhancement of vertical integration density by engineered BSOI wafers 
    KADEN, C.; LANGA, S.; LUDEWIG, T.; SCHÖNBERGER, A.; HERRMANN, A.; GÖBEL, A.; KOLKOVSKY, V.; JEROCH, W.; PUFE, W. (Springer Nature Switzerland, 2018)
    The lateral and vertical integration density of bulk microelectromechanical systems (MEMS) using bonded silicon-on-insulator (BSOI) wafers is significantly enhanced if the handle wafer is used as an electrical redistribution ...
  • Electrostatically Driven In-Plane Silicon Micropump for Modular Configuration 
    UHLIG, Sebastian; GAUDET, Matthieu; LANGA, Sergiu; SCHIMMANZ, Klaus; CONRAD, Holger; KAISER, Bert; SCHENK, Harald (MDPI (Basel, Switzerland), 2018)
    In this paper, an in-plane reciprocating displacement micropump for liquids and gases which is actuated by a new class of electrostatic bending actuators is reported. The so-called “Nano Electrostatic Drive” is capable of ...
  • Electrostatic bending actuators with a liquid filled nanometer scale gap 
    GAUDET, M.; UHLIG, S.; STOLZ, M.; ARSCOTT, S.; CONRAD, H.; LANGA, S.; KAISER, B.; SCHENK, H. (IEEE, 2017)
    We report a considerable improvement in the electrostatic actuation of silicon-based nano electrostatic drive (NED) structures [1] via the insertion of a liquid into the nanosystem. The dielectric liquid provides an ...
  • Electrochemically-Prepared 2D and 3D Photonic Crystals 
    WEHRSPOHN, Ralf B.; SCHILLING, Jörg; CHOI, Jinsub; LUO, Yun; MATTHIAS, Sven; SCHWEIZER, Stefan L.; MÜLLER, Frank; GÖSELE, Ulrich; LÖLKES, Stefan; LANGA, Sergiu; CARSTENSEN, Jürgen; FÖLL, Helmut (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2004)
    In the last ten years, ordered pore arrays with high aspect ratio have been studied extensively. Ordered porous dielectric materials are intrinsic 2D photonic crystals. Although there is a large variety of materials ...
  • Electrochemical pore etching in Ge – An overview 
    FANG, C.; FÖLL, H.; CARSTENSEN, J.; LANGA, S. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2007)
    While electrochemical pore etching in semiconductors has become a thriving field for research (and applications) in the past 15 years or so, little work has been done in Ge. Besides Si, Ge is the only semiconductor with a ...
  • Concept and proof for an all-silicon MEMS micro speaker utilizing air chambers 
    KAISER, Bert; LANGA, Sergiu; EHRIG, Lutz; STOLZ, Michael; SCHENK, Hermann; CONRAD, Holger; SCHENK, Harald; SCHIMMANZ, Klaus; SCHUFFENHAUER, David (Springer Nature Limited, 2019)
    MEMS-based micro speakers are attractive candidates as sound transducers for smart devices, particularly wearables and hearables. For such devices, high sound pressure levels, low harmonic distortion and low power consumption ...
  • Cathodoluminescence microanalysis of porous GaP and InP structures 
    TIGINYANU, I. M.; LANGA, S.; SIRBU, L.; MONAICO, E.; STEVENS-KALCEFF, M. A.; FÖLL, H. (EDP Sciences, 2004)
    Electron microscopy and cathodoluminescence (CL) microanalysis were used for a comparative study of porous layers fabricated by electrochemical etching of n-GaP and n-InP substrates in aqueous solutions of sulfuric and ...
  • Audio-Transducer for In-Ear-Applications based on CMOS-compatible electrostatic actuators 
    SPITZ, B.; WALL, F.; SCHENK, H.; MELNIKOV, A.; EHRIG, L.; LANGA, S.; STOLZ, M.; KAISER, B.; CONRAD, H.; SCHENK, H. (IEEE, 2019)
    Recently an innovative mSpeaker technology, based on a novel kind of CMOS compatible small gap electrostatic actuators for large deflection, has been introduced. In this paper, we devise methods to model such speakers in ...
  • A small-gap electrostatic micro-actuator for large deflections 
    CONRAD, Holger; SCHENK, Harald; KAISER, Bert; LANGA, Sergiu; GAUDET, Matthieu; SCHIMMANZ, Klaus; STOLZ, Michael; LENZ, Miriam (Springer Nature Limited, 2015)
    Common quasi-static electrostatic micro actuators have significant limitations in deflection due to electrode separation and unstable drive regions. State-of-the-art electrostatic actuators achieve maximum deflections of ...
  • A Novel Electrostatic Actuator Class 
    CONRAD, H.; KAISER, B.; GAUDET, M.; LANGA, S.; STOLZ, M.; UHLIG, S.; SCHIMMANZ, K.; SCHENK, H. (ELSEVIER, 2016)
    Common quasi-static electrostatic micro actuators have significant limitations in deflection due to electrode separation and unstable drive regions. These actuators suffer from an operational instability, the so-called ...
  • A contribution to the expansion of the applicability of electrostatic forces in micro transducers 
    SCHENK, Harald; CONRAD, Holger; GAUDET, Matthieu; UHLIG, Sebastian; KAISER, Bert; LANGA, Sergiu; STOLZ, Michael; SCHIMMANZ, Klaus (Society of Photo-Optical Instrumentation Engineers, SPIE, 2017)
    Electrostatic actuation is highly efficient at micro and nanoscale. However, large deflection in common electrostatically driven MEMS requires large electrode separation and thus high driving voltages. To offer a solution ...
  • Artizani din localitățile din nordul Republicii Moldova – promotori ai covorului tradițional moldovenesc 
    TOCARCIUC, Alina (CEP USM, 2020)
    Alesul covoarelor a fost un meșteșug tradițional atestat în mai multe localități din raioanele Orhei, Strășeni, Călărași, precum și în cadrul mănăstirilor de călugărițe Tabăra, Hâncu, Hirova, Hagimus. În comunicare, în ...
  • Activitatea atelierelor de confecționare a costumului național moldovenesc în primele decenii postbelice 
    BUJOREAN, Tatiana (CEP USM, 2020)
    O trecere în revistă a principalelor aspecte care circumscriu activitatea atelierelor de producție artistică din RSSM (denumite arteluri până în anul 1960) reprezintă un subiect important pentru domeniul etnologiei și ...
  • Educația între prezent și viitor 
    LUNGU, Viorelia (Universitatea de Stat din Tiraspol, 2019)
    Educația are un rol important în o societate în continuă schimbare. În acest context este necesar de a stabili atât realizările cât și competențele necesare pentru a determina performanța, o viziune prospectivă, promovând ...
  • Calcularea limitelor 
    BOTNARU, Dumitru; ŢURCANU, Alina (Universitatea de Stat din Tiraspol, 2018)
    În lucrare sunt studiate o serie de exemple de calculare a limitelor, fiind folosite anumite procedee. A series of examples of limit calculation are studied in the paper, using some methods.
  • Pd-Functionalized ZnO:Eu Columnar Films for Room-Temperature Hydrogen Gas Sensing: A Combined Experimental and Computational Approach 
    LUPAN, Cristian; KHALEDIALIDUSTI, Rasoul; MISHRA, Abhishek Kumar; POSTICA, Vasile; TERASA, Maik-Ivo; MAGARIU, Nicolae; PAUPORTÉ, Thierry; VIANA, Bruno; DREWES, Jonas; VAHL, Alexander; FAUPEL, Franz; ADELUNG, Rainer (American Chemical Society, 2020)
    Reducing the operating temperature to room temperature is a serious obstacle on long-life sensitivity with long-term stability performances of gas sensors based on semiconducting oxides, and this should be overcome by new ...
  • ZnO Micro/Nano Structures by MOCVD and Vapour Transport Technique: Growth and Characterization 
    RUSU, E.; BURLACU, A.; URSAKI, V.; STRATAN, G.; PURICA, M.; BUDIANU, E.; MONAICO, E. (IEEE, 2007)
    ZnO micro/nano structures were grown by metalo-organic chemical vapour deposition (MOCVD) and chemical vapour transport and condensation deposition process on Si and glass substrates. Using MOCVD method were grown uniform ...

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