Forschungseinrichtungen

 

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  • Velte, Ulrich (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Several aspects of testing the universality of free fall (UFF) with spaceborne atom interferometers are discussed. Theoretical effects that could lead to an (apparent) violation of the UFF are reviewed and the requirements ...
  • Levin-Keitel, M.; Mölders, T.; Othengrafen, F.; Ibendorf, J. (Basel : MDPI AG, 2018)
    Sustainability transitions research lacks a crucial perspective: the spatial dimension. The interrelations between space and sustainability transition processes are thus underexposed. The spatial dimension is, of course, ...
  • Schreiber, Emil (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The first detections of gravitational waves have opened an exciting new field of astronomy. One of the most fundamental limitations for the sensitivity of current and future interferometric gravitational-wave detectors is ...
  • Brennecke, Simon; Lein, Manfred (Bristol : Institute of Physics Publishing, 2018)
    Photoelectron momentum distributions from strong-field ionization are calculated by numerical solution of the one-electron time-dependent Schrödinger equation for a model atom including effects beyond the electric dipole ...
  • Meinhardt-Wollweber, Merve; Suhr, Christian; Kniggendorf, Ann-Kathrin; Roth, Bernhard (College Park, MD : American Institute of Physics, 2018)
    Absorption or resonance Raman scattering are often used to identify and even quantify carotenoids in situ. We studied the absorption spectra, the Raman spectra and their resonance behavior of β-carotene in different molecular ...
  • Hannig, Stephan (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    At the time of writing, state of the art stationary optical clocks reach 10 −18 sys- tematic fractional frequency uncertainty, which allows for the search of new physics beyond the standard model and lays the foundation ...
  • Popp, Manuel André (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Quantum sensors based on atomic interferometry are becoming valued tools for precision measurements in various research areas such as metrology, Earth sciences and inertial sensors. However, the verification of their ...
  • Lange, Karsten (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The predictions of quantum mechanics often differ from our everyday experiences. In the classical case, the state of a system can be predicted precisely, assuming the exact knowledge of all parameters. This is not possible ...
  • Isleif, Katharina-Sophie (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The development and investigation of laser interferometry concepts for performing precise length measurements at frequencies below 1Hz is the main topic of this thesis. These concepts are quintessential for space-based ...
  • Brause, Nils Christopher (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The Laser Interferometer Space Antenna (LISA) is a planned gravitational wave detector to be positioned in space. It consists of three spacecrafts that use Long Range Interferometry (LRI) to measure relative distance ...
  • Grotti, Jacopo (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    This work presents the first measurement campaigns performed with PTB transportable optical lattice clock based on Strontium atoms for applications in clock comparisons and relativistic geodesy.
  • Holtz, Peter; Fetahu, Besnik; Kimmerle, Joachim (Richmond, Va. : Healthcare World, 2018)
    Background: Consulting the Internet for health-related information is a common and widespread phenomenon, and Wikipedia is arguably one of the most important resources for health-related information. Therefore, it is ...
  • Schlangen, Sebastian; Bremer, Kort; Zheng, Yulong; Böhm, Sebastian; Steinke, Michael; Wellmann, Felix; Neumann, Jörg; Roth, Bernhard; Overmeyer, Ludger (Basel : MDPI AG, 2018)
    Long-period fiber gratings (LPGs) are well known for their sensitivity to external influences, which make them interesting for a large number of sensing applications. For these applications, fibers with a high numerical ...
  • Zheng, Yulong; Bremer, Kort; Roth, Bernhard (Basel : MDPI AG, 2018)
    In this work we investigate the strain, temperature and humidity sensitivity of a Fiber Bragg Grating (FBG) inscribed in a near infrared low-loss multimode perfluorinated polymer optical fiber based on cyclic transparent ...
  • Posso Trujillo, Katerine (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    In dieser Arbeit werden quantenentartete Gemische auf ihre Eigenschaften als Quellen für Präzisionsatominterferometer zum Test des Einsteinschen Äquivalenzprinzips untersucht. Um die notwendige Auflösung zu erreichen, ...
  • Auer, Sören; Kovtun, Viktor; Prinz, Manuel; Kasprzik, Anna; Stocker, Markus (New York : ACM, 2018)
    The document-centric workflows in science have reached (or already exceeded) the limits of adequacy. This is emphasized by recent discussions on the increasing proliferation of scientific literature and the reproducibility ...
  • Stecher, Rodolfo; Niederée, Claudia; Nejdl, Wolfgang; Bouquet, Paolo (Bingley : Emerald Group Publishing Ltd., 2008)
    Purpose - The discovery of the "right" ontology or ontology part is a central ingredient for effective ontology re-use. The purpose of this paper is to present an approach for supporting a form of adaptive re-use of ...
  • Rahlves, M.; Varkentin, A.; Stritzel, J.; Blumenröther, E.; Mazurenka, M.; Wollweber, M.; Roth, B. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    Melanoma skin cancer has one of the highest mortality rates of all types of cancer if not detected at an early stage. The survival rate is highly dependent on its penetration depth, which is commonly determined by ...
  • Wirz, Raul; Lathrop, Ray A.; Godage, Isuru S.; Burgner-Kahrs, Jessica; Russell, Paul T.; Webster, Robert J. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Anecdotally, surgeons sometimes observe large errors when using image guidance in endonasal surgery. We hypothesize that one contributing factor is the possibility that operating room personnel might accidentally bump the ...
  • Amanov, E.; Nguyen, T.-D.; Burgner-Kahrs, J. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Tubular continuum robots, which are composed of multiple concentric, precurved, elastic tubes, provide more dexterity than traditional surgical instruments at the same diameter. The tubes can be precurved such that the ...

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