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Browsing by Subject "Rafeindir"

Browsing by Subject "Rafeindir"

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  • T P, Ragesh Kumar (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-12-15)
    Focused electron beam induced deposition (FEBID) is a direct-write 3D nanofabrication technique, which works on the principle of electron-induced molecular decomposition. In FEBID, a high-energy focused electron beam dissociates the precursor molecules ...
  • Kamble, Nilesh Ramesh; Gränz, Markus; Prisner, Thomas F.; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2016)
    An isoindoline-nitroxide derivative of guanine (G, "G-spin") was shown to bind specifically and effectively to abasic sites in duplex RNAs. Distance measurements on a G-labeled duplex RNA with PELDOR (DEER) showed a strong orientation dependence. Thus, ...
  • Hannesdottir, Holmfridur; Gudmundsson, Jon Tomas (IOP Publishing, 2017-03-27)
    We apply particle-in-cell simulations with Monte Carlo collisions to study the influence of the singlet metastable states on the ion energy distribution in single and dual frequency capacitively coupled oxygen discharges. For this purpose, the ...
  • Morina, Skender; Dini, Kevin Tanguy Elian; Iorsh, Ivan; Shelykh, Ivan (American Chemical Society (ACS), 2018-02-12)
    We propose an experimentally friendly scheme for trapping quasi-relativistic electrons in graphene by an electromagnetic beam with circular polarization and a spatially inhomogeneous profile with an intensity dip. The trapping is achieved due to the ...
  • Iorsh, Ivan; Dini, Kevin Tanguy Elian; Kibis, Oleg; Shelykh, Ivan (American Physical Society (APS), 2017-10-11)
    It is shown theoretically that the renormalization of the electron energy spectrum of bilayer graphene with a strong high-frequency electromagnetic field (dressing field) results in the Lifshitz transition—the abrupt change in the topology of the Fermi ...
  • Pedersen, Andreas; Pizzagalli, Laurent; Jónsson, Hannes (IOP Publishing, 2017-06-15)
    Atomic structure of amorphous silicon consistent with several reported experimental measurements has been obtained from annealing simulations using electron density functional theory calculations and a systematic removal of weakly bound atoms. The ...
  • Kozin, Valerii; Iorsh, Ivan; Kibis, Oleg; Shelykh, Ivan (American Physical Society (APS), 2018-01-11)
    We demonstrate theoretically that a strong high-frequency circularly polarized electromagnetic field can turn a two-dimensional periodic array of interconnected quantum rings into a topological insulator. The elaborated approach is applicable to calculate ...
  • Ómarsson, Benedikt; Bjornsson, Ragnar; Ingólfsson, Oddur (American Chemical Society (ACS), 2017-07-21)
    Here we present a combined experimental and theoretical study on the fragmentation of o- and p-tetrafluorohydroquinone upon low energy electron attachment. Despite an identical ring-skeleton and identical functional groups in these constitutional ...
  • Akhmetzyanov, D.; Schöps, P.; Marko, A.; Kunjir, N. C.; Sigurdsson, Snorri; Prisner, Thomas F. (Royal Society of Chemistry (RSC), 2015)
    Pulsed electron paramagnetic resonance (EPR) spectroscopy is a valuable technique for the precise determination of distances between paramagnetic spin labels that are covalently attached to macromolecules. Nitroxides have commonly been utilised as ...
  • Kozin, Valerii; Iorsh, Ivan; Kibis, Oleg; Shelykh, Ivan (American Physical Society (APS), 2018-04-26)
    We developed the theory of electronic properties of semiconductor quantum rings with the Rashba spin-orbit interaction irradiated by an off-resonant high-frequency electromagnetic field (dressing field). Within the Floquet theory of periodically driven ...
  • Gophane, Dnyaneshwar B.; Endeward, Burkhard; Prisner, Thomas F.; Sigurdsson, Snorri (Royal Society of Chemistry (RSC), 2018)
    A new isoindoline-derived benzimidazole nitroxide spin label, ImUm, was synthesized and incorporated into RNA oligoribonucleotides. ImUm is the first example of a conformationally unambiguous spin label for RNA, in which the nitroxide N–O bond lies on ...
  • Ilkov, Marjan (2016-02)
    Space-charge limited emission in vacuum microdiodes can go through transverse modulation under certain conditions. The frequency of this modulated current is in the terahertz band and it can be tuned by changing either the the gap spacing or the gap ...
  • Kozin, Valerii; Shelykh, Ivan; Nalitov, Anton; Iorsh, Ivan (American Physical Society (APS), 2018-09-10)
    The Chern insulator phase is shown to emerge in two-dimensional arrays of polariton rings where time-reversal symmetry is broken due to the application of an out-of-plane magnetic field. The interplay of Zeeman splitting with the photonic analog of ...