Fakultät für Mathematik und Physik

 

Neueste Zugänge

  • Mitchell, Claire A.; Kalies, Stefan; Cizmar, Tomas; Heisterkamp, Alexander; Torrance, Lesley; Roberts, Alison G.; Gunn-Moore, Frank J.; Dholakia, Kishan (San Francisco, CA : Public Library of Science, 2013)
    A tightly-focused ultrashort pulsed laser beam incident upon a cell membrane has previously been shown to transiently increase cell membrane permeability while maintaining the viability of the cell, a technique known as ...
  • Koch, L.; Brandt, O; Deiwick, A.; Chichkov, B. (Singapur : Whioce Publishing Pte Ltd, 2017)
    For more than a decade, living cells and biomaterials (typically hydrogels) are printed via laser-assisted bioprinting. Often, a thin metal layer is applied as laser-absorbing material called dynamic release layer (DRL). ...
  • Sorkio, A.; Koch, L.; Koivusalo, L.; Deiwick, A.; Miettinen, S.; Chichkov, B.; Skottman, H. (London : Elsevier Ltd., 2018)
    There is a high demand for developing methods to produce more native-like 3D corneal structures. In the present study, we produced 3D cornea-mimicking tissues using human stem cells and laser-assisted bioprinting (LaBP). ...
  • Mamedova, Firuza (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Given a $G$-invariant holomorphic 1-form with an isolated singular point on a germ of a complex analytic $G$-variety with an isolated singular point, its equivariant homological index and (reduced) equivariant radial index ...
  • Geis, David (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    In this thesis, we study simplicial arrangements of hyperplanes. Classically, a simplicial arrangement $\mathcal{A}$ in $\mathbb{R}^r$ is a finite set of linear hyperplanes such that every component of $\mathbb{R}^r \setminus ...
  • Overbeck, Vincent Raphael (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    We investigate a dissipative Ising model that exhibits the Ising symmetry via a variational approach. In the non-equilibrium steady state phase diagram, we find a first order and a second order transition meeting at a ...
  • Brockt, Christoph (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    In this dissertation a newly developed numerical method is presented, which is optimized for the time evolution of one-dimensional lattice systems with large local Hilbert spaces. This method extends the time-evolving ...
  • Choudhuri, Aradhana; Chatterjee, Gourab; Zheng, Jiaan; Hartl, Ingmar; Ruehl, Axel; Miller, R.J. Dwayne (Heidelberg : Springer Verlag, 2018)
    We present the first systematic study of the spatio-spectral polarization properties of a supercontinuum generated in a cubic crystal, yttrium–aluminum garnet (YAG), including a full spectral analysis of the white light ...
  • Franzmann, Michael; Bosco, Hauke; Hamann, Linda; Walther, Clemens; Wendt, Klaus (Cambridge : Royal Society of Chemistry, 2018)
    The newly developed resonant laser-SNMS system at the IRS Hannover combines the high spatial and decent mass resolution of a TOF-SIMS instrument with the element-selective process of resonant laser ionization. This setup ...
  • Tröbs, M.; Schuster, S.; Lieser, M.; Zwetz, M.; Chwalla, M.; Danzmann, K.; Barránco, G.F.; Fitzsimons, E.D.; Gerberding, O.; Heinzel, G.; Killow, C.J.; Perreur-Lloyd, M.; Robertson, D.I.; Schwarze, T.S.; Wanner, G.; Ward, H. (Bristol : Institute of Physics Publishing, 2018)
    Objects sensed by laser interferometers are usually not stable in position or orientation. This angular instability can lead to a coupling of angular tilt to apparent longitudinal displacement - tilt-to-length coupling ...
  • Johannsmeier, Sonja; Heeger, Patrick; Terakawa, Mitsuhiro; Kalies, Stefan; Heisterkamp, Alexander; Ripken, Tammo; Heinemann, Dag (London : Nature Publishing Group, 2018)
    Stimulation of neuronal cells generally resorts to electric signals. Recent advances in laser-based stimulation methods could present an alternative with superior spatiotemporal resolution. The avoidance of electronic ...
  • Nielsen, Alex B.; Shoom, Andrey A. (Bristol : Institute of Physics Publishing, 2018)
    Certain dynamical black hole solutions can be mapped to static spacetimes by conformal metric transformations. This mapping provides a physical link between the conformal Killing horizon of the dynamical black hole and the ...
  • Correa, Francisco; Lechtenfeld, Olaf (Trieste : Scuola Internazionale Superiore di Studi Avanzati (S I S S A), 2016)
    The rational Calogero model based on the An- 1 root system is spherically reduced to a superintegrable angular model of a particle moving on Sn- 2 subject to a very particular potential singular at the Weyl chamber walls. ...
  • Petzold, M.; Kaebert, P.; Gersema, P.; Siercke, M.; Ospelkaus, S. (Bristol : Institute of Physics Publishing, 2018)
    We present a novel slowing scheme for beams of laser-coolable diatomic molecules reminiscent of Zeeman slowing of atomic beams. The scheme results in efficient compression of the one-dimensional velocity distribution to ...
  • Zuber, Ralf; Sperfeld, Peter; Riechelmann, Stefan; Nevas, Saulius; Sildoja, Meelis; Seckmeyer, Gunther (Göttingen : Copernicus GmbH, 2018)
    A compact array spectroradiometer that enables precise and robust measurements of solar UV spectral direct irradiance is presented. We show that this instrument can retrieve total ozone column (TOC) accurately. The internal ...
  • Adya, Vaishali Badrish (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Now that we have entered an era of gravitational wave astronomy, gravitational wave detectors are expected to detect several events a month (or more) in the near future. The current ground based detectors are undergoing ...
  • Schulze, Torben Alexander (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    The discovery and development of methods to cool, trap and manipulate atomic ensembles have generated a revolution in atomic physics, culminating in the ever expanding research field of ultra-cold matter through the ...
  • Zhang, Wei (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    In dieser Dissertation betrachten wir die Gleichung $$\sigma_k(A^u) = u^{\left(p-\frac{n+2}{n-2}\right)k}, wobei $n\ge 3$ und $ p \in \left(\frac n{n-2} , \frac{n+2}{n-2}\right). Dabei ist $\sigma_k$ das $k$-te ...
  • Singh, Avneet (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    (english) Gravitational waves (GW) are tiny oscillations in the fabric of space-time, first hypothesised within the framework of Einstein’s General theory of Relativity (GR) a little more than 100 years ago. The first ...
  • Stahl, Christoph (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2018)
    Quantum walks are discrete-time evolutions of single particles on lattices that transfer the concept of classical random walks to quantum theory. Topological insulators are objects that promise symmetry-protected edge-states ...

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