Auflistung nach Titel

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  • Tunable dual-species Bose-Einstein condensates of 39K and 87Rb 
    Wacker, L.; Jørgensen, N.B.; Birkmose, D.; Horchani, R.; Ertmer, Wolfgang; Klempt, Carsten; Winter, N.; Sherson, J.; Arlt, Jan J. (College Park : American Physical Society, 2015)
    We present the production of dual-species Bose-Einstein condensates (BECs) of 39K and 87Rb. Preparation of both species in the |F=1,mF=−1⟩ state enabled us to exploit a total of three Feshbach resonances, which allows for ...
  • Tunable graphene system with two decoupled monolayers 
    Schmidt, H.; Lüdtke, T.; Barthold, P.; McCann, E.; Fal'Ko, V.I.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2008)
    The use of two truly two-dimensional gapless semiconductors, monolayer and bilayer graphene, as current-carrying components in field-effect transistors (FETs) gives access to special types of nanoelectronic devices. Here, ...
  • Tunable in situ near-UV pulses by transient plasmonic resonance in nanocomposites 
    Husakou, Anton; Babushkin, Ihar; Fedotova, Olga; Rusetsky, Ryhor; Smirnova, Tatsiana; Khasanov, Oleg; Fedotov, Alexander; Sapaev, Usman; Apostolova, Tzveta (Washington, DC : Optica, 2023)
    We propose a concept for generation of ultrashort pulses based on transient field-induced plasmonic resonance in nanoparticle composites. Photoionization and free-carrier plasma generation change the susceptibility of ...
  • Tunable magnetic field source for magnetic field imaging microscopy 
    Berzins, Andris; Grube, Hugo; Lazda, Reinis; Hannig, Marc A.; Smits, Janis; Fescenko, Ilja (Amsterdam : Elsevier Science, 2022)
    In this work, we present a novel, compact, power efficient and variable magnetic field source design for magnetic field imaging microscopy. The device is based on a pair of diametrically magnetized permanent magnet cylinders ...
  • Tunable molecular separation by nanoporous membranes 
    Wang, Zhengbang; Knebel, Alexander; Grosjean, Sylvian; Wagner, Danny; Bräse, Stefan; Wöll, Christof; Caro, Jürgen; Heinke, Lars (London : Nature Publishing Group, 2016)
    Metal-organic frameworks offer tremendous potential for efficient separation of molecular mixtures. Different pore sizes and suitable functionalizations of the framework allow for an adjustment of the static selectivity. ...
  • Tunable nonlocal coupling between Kondo impurities 
    Tutuc, D.; Popescu, B.; Schuh, D.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Physical Society, 2011)
    We study the tuning mechanisms of Ruderman-Kittel-Kasuya-Yosida (RKKY) exchange interaction between two lateral quantum dots in the Kondo regime. At zero magnetic field we observe the expected splitting of the Kondo resonance ...
  • Tungsten Nanoparticles Accelerate Polysulfides Conversion: A Viable Route toward Stable Room-Temperature Sodium–Sulfur Batteries 
    Liu, Yuping; Ma, Shuangying; Rosebrock, Marina; Rusch, Pascal; Barnscheidt, Yvo; Wu, Chuanqiang; Nan, Pengfei; Bettels, Frederik; Lin, Zhihua; Li, Taoran; Ge, Binghui; Bigall, Nadja C.; Pfnür, Herbert; Ding, Fei; Zhang, Chaofeng; Zhang, Lin (Weinheim : Wiley-VCH, 2022-02-08)
    Room-temperature sodium–sulfur (RT Na–S) batteries are arousing great interest in recent years. Their practical applications, however, are hindered by several intrinsic problems, such as the sluggish kinetic, shuttle effect, ...
  • Tuning emission energy and fine structure splitting in quantum dots emitting in the telecom O-band 
    Hoefer, B.; Olbrich, F.; Kettler, J.; Paul, M.; Hoeschele, J.; Jetter, M.; Portalupi, S.L.; Ding, F.; Michler, P.; Schmidt, O.G. (New York, NY : American Inst. of Physics, 2019)
    We report on optical investigations of MOVPE-grown InGaAs/GaAs quantum dots emitting at the telecom O-band that were integrated ontouniaxial piezoelectric actuators. This promising technique, which does not degrade the ...
  • Tuning excitability by alloying: the Rh(111)/Ni/H2 + O2 system 
    Smolinsky, T.; Homann, M.; Imbihl, R. (Cambridge : Royal Society of Chemistry, 2016)
    The dynamic behavior of the O2 + H2 reaction on a Rh(111) surface alloyed with Ni has been studied in the 10(-5) mbar range using photoemission electron microscopy (PEEM) as a spatial resolving method. For T = 773 K and ...
  • Tuning of one-dimensional plasmons by Ag-Doping in Ag-√3-ordered atomic wires 
    Krieg, U.; Zhang, Yu; Tegenkamp, Christoph; Pfnür, Herbert (Bristol : IOP Publishing Ltd, 2014)
    We generated arrays of silver wires with a height of 1 atom and an average width of 11 atoms on the Si(557) surface via self-assembly with local √3 x √3 order, and investigated the 1D plasmon formation in them using a ...
  • Tuning the conductivity along atomic chains by selective chemisorption 
    Edler, Frederik; Miccoli, Ilio; Stöckmann, Jan Philipp; Pfnür, Herbert; Braun, C.; Neufeld, S.; Sanna, S.; Schmidt, W.G.; Tegenkamp, Christoph (College Park, MD : American Physical Society, 2017)
    Adsorption of Au on vicinal Si(111) surfaces results in growth of long-range ordered metallic quantum wires. In this paper, we utilized site-specific and selective adsorption of oxygen to modify chemically the transport ...
  • Tuning the localized surface plasmon resonance in copper chalcogenide nanoparticles 
    Wolf, Andreas (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2016)
    [no abstract]
  • Tuning the LSPR in copper chalcogenide nanoparticles by cation intercalation, cation exchange and metal growth 
    Wolf, Andreas; Kodanek, Torben; Dorfs, Dirk (Cambridge : Royal Society of Chemistry, 2015-10-29)
    Localized surface plasmon resonances (LSPRs) of degenerately doped copper chalcogenide nanoparticles (NPs) (Cu2−xSe berzelianite and Cu1.1S covellite) have been modified applying different methods. The comparison of the ...
  • Tuning the onset voltage of resonant tunneling through InAs quantum dots by growth parameters 
    Hapke-Wurst, I.; Zeitler, U.; Keyser, U.F.; Haug, Rolf J.; Pierz, Klaus; Ma, Z. (College Park, MD : American Institute of Physics, 2003)
    A study was conducted on the onset voltage of resonant tunneling through indium arsenide (InAs) quantum dots by growth parameters. It was found that the onset voltage of the first step decreased from 200 mV to 0 with ...
  • Tuning the optical properties of the metal-organic framework UiO-66 via ligand functionalization 
    Treger, Marvin; Hannebauer, Adrian; Schaate, Andreas; Budde, Jan L.; Behrens, Peter; Schneider, Andreas M. (Cambridge : RSC Publ., 2023)
    Metal-organic frameworks (MOFs) are a promising class of materials for optical applications, especially due to their modular design which allows fine-tuning of the relevant properties. The present theoretical study examines ...
  • Tuning the Thermoelectric Performance of CaMnO3-Based Ceramics by Controlled Exsolution and Microstructuring 
    Kanas, Nikola; Williamson, Benjamin A. D.; Steinbach, Frank; Hinterding, Richard; Einarsrud, Mari-Ann; Selbach, Sverre M.; Feldhoff, Armin; Wiik, Kjell (Washington, DC : ACS Publications, 2022)
    The thermoelectric properties of CaMnO3-δ/CaMn2O4 composites were tuned via microstructuring and compositional adjustment. Single-phase rock-salt-structured CaO-MnO materials with Ca:Mn ratios larger than unity were produced ...
  • Tunneling resonances in quantum dots: Coulomb interaction modifies the width 
    Könemann, Jens; Kubala, Björn; König, Jürgen; Haug, Rolf J. (College Park, MD : American Physical Society, 2006)
    Single-electron tunneling through a zero-dimensional state in an asymmetric double-barrier resonant-tunneling structure is studied. The broadening of steps in the I-V characteristics is found to strongly depend on the ...
  • Turbine–Diffuser Interaction 
    Mimic, Dajan (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2021)
    Diffusers increase the power output and cycle efficiency of gas turbines by reducing the back pressure of the turbine, thus, increasing the work extracted from the fluid by the turbine. They are, however, challenging to ...
  • Turbulent Heat Exchange Over Polar Leads Revisited: A Large Eddy Simulation Study 
    Gryschka, M.; Gryanik, V.M.; Lüpkes, C.; Mostafa, Z.; Sühring, M.; Witha, B.; Raasch, S. (Hoboken, NJ : Wiley, 2023)
    Sea ice leads play an important role in energy exchange between the ocean and atmosphere in polar regions, and therefore must be considered in weather and climate models. As sea ice leads are not explicitly resolved in ...
  • Turbulent transport in the Gray Zone: A large-eddy model intercomparison study of the CONSTRAIN cold air outbreak case. 
    de Roode, Stephan R.; Frederikse, Thomas; Siebesma, A. Pier; Ackerman, Andrew S.; Chylik, Jan; Field, Paul R.; Fricke, Jens; Gryschka, Micha; Hill, Adrian; Honnert, Rachel; Krueger, Steven K.; Lac, Christine; Lesage, Andrew T.; Tomassini, Lorenzo (Washington, DC : American Geophysical Union (AGU), 2019)
    To quantify the turbulent transport at gray zone length scales between 1 and 10 km, the Lagrangian evolution of the CONSTRAIN cold air outbreak case was simulated with seven large eddy models. The case is characterized by ...