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Suche nach „[2011]“ hat 190 Publikationen gefunden
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    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTC Teisnach Sensorik

    Zeitschriftenartikel

    S. Kufner, Maria Kufner

    Ion exchange technology for optical waveguides

    Optik & Photonik (Optical Components), no. 12, pp. 32-34

    2011

    DOI: 10.1002/opph.201190385

    Abstract anzeigen

    The term ‘integrated optics’ has been created more than 30 years ago and describes a family of technologies where light guiding structures are inte-grated on planar substrates. The concept corresponds to electronic integration, where lithographical tools are used to create structures in the micron range with submicron precision. One of the first reliable production processes for in-tegrated optical waveguides was ion ex-change in glass.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTC Weißenburg

    Zeitschriftenartikel

    Gerhard, R., Dmitry Rychkov

    Stabilization of positive charge on polytetrafluoroethylene electret films treated with titanium-tetrachloride vapor

    Applied Physics Letters, vol. 98, no. 12

    2011

    DOI: 10.1063/1.3565166

    Abstract anzeigen

    The surface of polytetrafluoroethylene films was treated with titanium-tetrachloride vapor. The treatment was carried out in a flow reactor by means of molecular-layer deposition, a method from the arsenal of chemical nanotechnology. X-ray photoelectron spectroscopy reveals that such a treatment results in considerable changes in the chemical composition at and near the surface of the fluoropolymer film. Both, defluorination and oxidation of the surface were observed. At the same time, samples treated with titanium tetrachloride show a significant enhancement in the thermal stability of the positive homocharge. The thermally stimulated surface-potential-decay curves were observed to shift to higher temperatures by more than 100 °C The authors are indebted to Dr. Andreas Holländer (Fraunhofer Institute for Applied Polymer Research, Potsdam-Golm, Germany) for making the XPS measurements possible and to Dr. Sergey Trifonov of St. Petersburg State Institute of Technology (St. Petetrsburg, Russia) for the treatment of PTFE films with titanium-tetrachloride vapor.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTC Weißenburg

    Zeitschriftenartikel

    Kuznetsov, A., Dmitry Rychkov, Rychkov, A. A.

    Electret Properties of Polyethylene and Polytetrafluoroethylene Films with Chemically Modified Surface

    IEEE Transactions on Dielectrics and Electrical Insulation, vol. 18, no. 1, pp. 8-14

    2011

    DOI: 10.1109/TDEI.2011.5704487

    Abstract anzeigen

    This paper investigates the effect of chemical surface modification of polytetrafluoroethylene (PTFE) and low density polyethylene (LDPE) films on their electret properties. PTFE films were subjected to wet treatment with three different chemicals: orthophosphoric acid, tetrabutyl titanate and tetraethoxysilane. The technique based on the principles of molecular layer deposition (MLD) method was used to modify the surface of LDPE films with phosphorus trichloride vapors. The surfaces of the films were then corona charged, and the electret charge stability was studied by means of isothermal and thermally stimulated surface potential decay. Both PTFE and LDPE films, after the surface treatment, displayed a considerable enhancement in the charge stability compared to the virgin samples. It is important to note that the enhancement of the charge stability was achieved in the positively charged PTFE films, a result important to practical applications. We attribute this effect of charge stabilization to the formation of new energetically deep traps on the modified surface. Decrease in molecular mobility, due to attachment of new chemical structures to the surface macro molecules, may also contribute to the overall growth of the charge stability.

    TC Cham

    Patent

    Continental Automotive GmbH, Frank Denk

    Determination of the movement behaviour of a fuel injetor on the basis of the time interval between the first two voltage pulses in a holding phase

    2011

    TC Cham

    Patent

    Continental Automotive GmbH, Frank Denk

    Bestimmung des Standardserien-Öffnungsverhaltens eines Kraftstoffinjektors basierend auf einem Test-Öffnungsverhalten unter dem Einfluss eines Testpulses mit konstanter Spannung

    2011

    DigitalGesundEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    P. Friedrich, Thomas Spittler, B. Wolf

    Smartphone-Schnittstellen für telemedizinische Anwendungen

    ntz - Fachzeitschrift für Informations- und Kommunikationstechnik, no. 1, pp. 38-41

    2011

    DigitalGesundEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    J. Clauss, M. Brischwein, D.A Hofsøy, K. Herzog, A. Scholz, S. Becker, Thomas Spittler, M. Gül, H. Grothe, F. Demmel, D. Dill, M. Schmidhuber, J. Wiest, B. Wolf

    Elektronik für ein gesundes Leben

    Medizintechnik in Bayern, pp. 18-27

    2011

    DigitalGesundEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    P. Friedrich, Thomas Spittler, B. Wolf

    COMES®: Interactive, Telematic-Therapeutic Assistance

    Applied Psychophysiology and Biofeedback, vol. 36, no. 4 (December), pp. 290-291

    2011

    Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    W. Stummer, Robert Feicht

    An explicit non-stationary stochastic growth model

    Chapter 7 of the book: O. de la Grandville (ed.), Economic Growth and Development, Frontiers of Economics and Globalization

    Economic growth and development, Bingley, UK, vol. 11

    2011

    ISBN: 978-1-78052-396-5

    NachhaltigEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    C.-H. Solterbeck, M. Mátéfi-Tempfli, M. Es-Souni, Stefan Mátéfi-Tempfli, S. Habouti

    On-substrate, self-standing Au-nanorods arrays showing morphology controlled properties

    Nano Today, vol. 6, no. 1, pp. 12-19

    2011

    DOI: 10.1016/j.nantod.2010.11.001

    Abstract anzeigen

    We use supported alumina templates and electrodeposition to fabricate self-standing Au-nanorods (Au-NR) arrays. Depending on electrolyte and deposition conditions two different NR morphologies with either corrugated or smooth topologies are fabricated. We show that the properties of the NR arrays, including amphiphilic and optical, very much depend on their morphology. Smooth NR arrays are hydrophobic while the corrugated ones are hydrophilic. Also the optical reflectance, though it shows plasmon resonances at very similar wave lengths, is much lower for the corrugated NR arrays. The activity of the NR arrays as substrates for molecular detection using Raman scattering, and Rhodamine 6G (R6G) as model dye, also strongly depends on their morphology. R6G concentrations down to 1 pM are detected on the corrugated arrays yielding an effective enhancement factor (EF) of approximately 1 × 109. In contrast an over-estimated (because of their hydrophobic character) EF of 6 × 106 is obtained for the smooth NR arrays.

    NachhaltigEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    A. Radu, L. Piraux, Stefan Mátéfi-Tempfli, V. Antohe

    Circuit Modeling on Polyaniline Functionalized Nanowire-Templated Micro-Interdigital Capacitors for pH Sensing

    IEEE Transactions on Nanotechnology, vol. 10, no. 6, pp. 1314-1320

    2011

    Abstract anzeigen

    This study presents an improved alternative current (ac) circuit modeling of a highly sensitive capacitive pH-sensing element based on polyaniline (PANI) functionalized nanowire-templated micro-interdigited electrodes (NWs μIDEs). While electrical resonance measurements deal with a total equivalent capacity, comparative investigations show a good agreement with the fitting parameters of the corresponding model. A physical interpretation of the model is discussed to help in understanding the detection mechanism and a possible methodology to be used for further integration of the subsequent device is suggested.

    GesundAngewandte GesundheitswissenschaftenEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    E. Halliwell, Irmgard Tischner, H. Malson

    Are Contemporary Media Images Which Seem to Display Women as Sexually Empowered Actually harmful to Women?

    Psychology of Women Quarterly, vol. 35, no. 1, pp. 38-45

    2011

    GesundAngewandte GesundheitswissenschaftenEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    Irmgard Tischner

    QMiP Section Conference 2010 - A Change of Tongue: A reflection

    QMiP Bulletin, vol. 11, pp. 29-31

    2011

    GesundAngewandte GesundheitswissenschaftenEuropan Campus Rottal-Inn

    Zeitschriftenartikel

    A. Rudolfsdottir, E. Halliwell, Irmgard Tischner, H. Malson

    Post-Feminist Advertising Laid Bare: Young Women’s Talk About The Sexually Agentic Woman Of "Midriff" Advertising

    Feminism & Psychology, vol. 21, no. 1, pp. 74-99

    2011

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    A. Abrutis, T. Blomberg, Günther Ruhl, M. Lukosius, P. Baumann, C. Wenger

    ALD and AVD Grown Perovskite-type Dielectrics for Metal-Insulator-Metal Application

    (Invited)

    ECS Transactions, vol. 41, no. 2, pp. 53-61

    2011

    DOI: 10.1149/1.3633654

    Abstract anzeigen

    Atomic Vapor Deposition (AVD) and Atomic Layer Deposition (ALD) techniques were successfully applied for the depositions of perovskite type dielectrics, namely, Sr-Ta-O, Ti-Ta-O, Sr-Ti-O, Ba-Hf-O, Nb-Ta-O and Ce-Al-O. Thin films were investigated as alternative dielectrics for Metal-Insulator-Insulator (MIM) capacitors. Structural and electrical properties are investigated after depositing the metal oxides on 200 mm TiN/Si (100) substrates within the temperature range of 225-400 ºC. Electrical properties, investigated after sputtering Au top electrodes, revealed that the main characteristics are different for each dielectric. The highest dielectric constants were achieved for crystalline SrTiO3 (k=95), crystalline CeAlO3 (k = 60) and amorphous Ti-Ta-O (k = 50) films. However, Sr-Ta-O based MIM capacitors showed the lowest leakage current densities as well as the smallest capacitancevoltage linearity coefficients.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    T. Blomberg, Günther Ruhl, P. Baumann, C. Wenger, C. Baristiran Kaynak

    ALD grown NbTaOx based MIM capacitors

    Microelectronic Engineering, vol. 88, no. 8, pp. 2447-2451

    2011

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    A. Abrutis, Günther Ruhl, V. Kubilius, M. Skapas, A. Zauner, M. Lukosius, C. Wenger, C. Baristiran Kaynak

    Metal-insulator-metal capacitors with MOCVD grown Ce-Al-O as dielectric

    Microelectronic Engineering, vol. 88, no. 7, pp. 1529-1532

    2011

    DOI: 10.1016/j.mee.2011.03.044

    Abstract anzeigen

    Ce–Al–O thin films were prepared on 70 nm TiN/Si(1 0 0) substrates by pulsed injection metal organic chemical vapor deposition (PI-MOCVD) for metal–insulator–metal (MIM) applications. Depositions were carried out at 400 °C using two separate Ce and Al precursors. In order to get Ce–Al–O films with different stoichiometry, Al2O3 and CeO2 were mixed with different Ce:Al precursors’ ratios. According to the XRD analysis, the as deposited films were amorphous if more aluminum was injected than cerium, and crystalline – if they are cerium rich. Electrical properties have been investigated in MIM capacitors after e-beam evaporation of Au top electrodes. Oxides possess a dielectric constant of 10–20 in combination with leakage current densities as low as 10−5 A/cm2 at −2 V. The post deposition annealing (PDA) at 600 °C and 850 °C in N2 for 5 min lead to the diffusion of Ti from TiN bottom electrode and formation of the rutile TiO2 phase. Nevertheless, CeAlO3 films were obtained if the ratio of injected Ce:Al was 1:1. The k values increased to 60 in this case, but the leakage current density worsened to 10−3 A/cm2 at −2 V.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    T. Blomberg, Günther Ruhl, B. Tillack, M. Lukosius, C. Wenger, C. Baristiran Kaynak

    Single SrTiO3 and Al2O3/SrTiO3/Al2O3 based MIM capacitors: Impact of the bottom electrode material

    Microelectronic Engineering, vol. 88, no. 7, pp. 1521-1524

    2011

    DOI: 10.1016/j.mee.2011.03.022

    Abstract anzeigen

    Metal–Insulator–Metal (MIM) capacitors with atomic layer deposited (ALD) single SrTiO3 dielectric and Al2O3/SrTiO3/Al2O3 multilayer dielectric have been deposited on TaN and TiN bottom electrodes. The MIM stacks have been analyzed and compared in terms of electrical and structural properties. The results indicate that MIMs with multilayer dielectrics provide better leakage current performance than the ones with single dielectrics while capacitance density is decreased. Additional Al2O3 layers prevented the crystallization of SrTiO3 in the multilayer dielectric stack. The decreased capacitance density in MIMs with multilayer dielectric is attributed to the amorphous structure of SrTiO3 and the series capacitance of top and bottom Al2O3 layers. Furthermore, MIM capacitors with single SrTiO3 dielectric layer on TiN electrodes indicated better capacitance density compared to the one with TaN electrodes. The lower capacitance density of the single SrTiO3 dielectric on TaN electrodes is correlated to the interfacial layer formation between SrTiO3 and TaN electrodes.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    T. Blomberg, Günther Ruhl, B. Tillack, I. Costina, M. Lukosius, C. Wenger, C. Baristiran Kaynak

    Enhanced leakage current behavior of Sr2Ta2O7-x/SrTiO3 bilayer dielectrics for metal-insulator-metal capacitors

    Thin Solid Films, vol. 519, no. 17, pp. 5734-5739

    2011

    DOI: 10.1016/j.tsf.2011.01.001

    Abstract anzeigen

    Metal–Insulator–Metal (MIM) capacitors are one of the most essential components of radio frequency devices and analog/mixed-signal integrated circuits. In order to obtain high capacitance densities in MIM devices, high-k materials have been considered to be promising candidates to replace the traditional insulators. The challenging point is that the dielectric material must demonstrate high capacitance density values with low leakage current densities. In this work, SrTiO3 based MIM capacitors have been investigated and the electrical performance of the devices have been optimized by using bilayered systems of Sr2Ta2O7−x/SrTiO3 with different thicknesses of Sr2Ta2O7−x. Sputtering X-Ray photoelectron spectroscopy (XPS) measurements have been applied to investigate the interfaces between the thin film constituents of the MIM stacks. The optimized bilayered system provides a leakage current density of 8∗10− 8 A/cm2 at 2 V (bottom electrode injection) and a high capacitance density of 13 fF/μm2.

    NachhaltigAngewandte Naturwissenschaften und WirtschaftsingenieurwesenTAZ Spiegelau

    Zeitschriftenartikel

    S. Rushworth, Günther Ruhl, M. Lukosius, P. Baumann, C. Wenger, C. Baristiran Kaynak

    Atomic Vapor Depositions of Ti–Ta–O thin films for Metal–Insulator–Metal applications

    Thin Solid Films, vol. 519, no. 11, pp. 3831-3834

    2011

    DOI: 10.1016/j.tsf.2011.01.239

    Abstract anzeigen

    Atomic Vapor Deposition technique was applied for the depositions of Ti–Ta–O oxide films for Metal–Insulator–Metal capacitors used in back-end of line for Radio Frequency applications. Composition, crystallinity, thermal stability and electrical properties were studied. Ti–Ta–O films, with the ratio of Ta/Ti ~ 1.5, deposited at 400 °C on TiN electrodes, were amorphous and possessed a dielectric constant of 50 with low voltage linearity coefficients and leakage currents densities as low as 10− 7 A/cm2 at 1 V. The films, deposited on Si wafers, were amorphous up to the annealing temperature of 700 °C and crystallized in orthorhombic Ta2O5 phase at higher temperatures.