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Browsing by Subject "Skautun (rafsegulfræði)"

Browsing by Subject "Skautun (rafsegulfræði)"

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  • Ullah, Ubaid; Al-Hasan, Muath; Koziel, Slawomir; Mabrouk, Ismail Ben (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    In this paper, a multiple-input-multiple-output (MIMO) antenna featuring circular polarization diversity, and designed on a common coplanar ground is presented. The proposed antenna design utilizes a coplanar waveguide (CPW) feeding technique with three ...
  • Ullah, Ubaid; Mabrouk, Ismail Ben; Koziel, Slawomir (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    Design of a compact wideband circularly polarized (CP) multiple-input multiple-output (MIMO) antenna with polarization diversity is proposed and characterized for off-body communication. The antenna is based on a simple coplanar waveguide (CPW)-fed ...
  • Whittaker, C. E.; Cancellieri, E.; Walker, P. M.; Gulevich, D. R.; Schomerus, H.; Vaitiekus, D.; Royall, B.; Whittaker, D. M.; Clarke, E.; Iorsh, Ivan; Shelykh, Ivan; Skolnick, M. S.; Krizhanovskii, D. N. (American Physical Society (APS), 2018-03-02)
    We study exciton polaritons in a two-dimensional Lieb lattice of micropillars. The energy spectrum of the system features two flat bands formed from S and P x , y photonic orbitals, into which we trigger bosonic condensation under high power ...
  • Rozas, Elena; Beierlein, Johannes; Yulin, Alexey; Klaas, Martin; Suchomel, Holger; Egorov, Oleg; Shelykh, Ivan; Peschel, Ulf; Schneider, Christian; Klembt, Sebastian; Höfling, Sven; Martín, María Dolores; Viña, Luis (Wiley, 2020-07-08)
    Polariton condensates' propagation is strongly dependent on the particular energy landscape the particles are moving upon, in which the geometry of the pathway laid for their movement plays a crucial role. Bends in the circuit's trajectories affect the ...
  • Ullah, Ubaid; Mabrouk, Ismail Ben; Koziel, Slawomir; Al-Hasan, Muath (Institute of Electrical and Electronics Engineers (IEEE), 2020)
    In this paper, spatial and polarization diversities are simultaneously implemented in an ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna to reduce the correlation between the parallel-placed radiators. The keystone of the antenna is ...
  • Juhl, Michael (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2018-10)
    The polarization of electromagnetic waves (the direction of transversal vibration of its electric field vector) provides essential information about the emitting sources and scattering objects. Its measurement, i.e., optical polarimetry, has a history ...
  • Mandal, Sucharita; Sigurdsson, Snorri (Wiley, 2020-05-12)
    1,3‐Bis(diphenylene)‐2‐phenylallyl (BDPA)‐based radicals are of interest as polarizing agents for dynamic nuclear polarization (DNP). For this purpose, a BDPA‐nitroxide biradical, employing a phosphodiester linkage, was synthesized. Contrary to what ...
  • Sich, Maksym; Tapia-Rodriguez, Lucy E.; Sigurdsson, Helgi; Walker, Paul M.; Clarke, Edmund; Shelykh, Ivan; Royall, Benjamin; Sedov, Evgeny S.; Kavokin, Alexey V.; Skryabin, Dmitry V.; Skolnick, Maurice S.; Krizhanovskii, Dmitry N. (American Chemical Society (ACS), 2018-11-12)
    We report stable orthogonally polarized domains in high-density polariton solitons propagating in a semiconductor microcavity wire. This effect arises from spin-dependent polariton–polariton interactions and pump-induced imbalance of polariton spin ...
  • 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 ...
  • Sich, M.; Chana, J. K.; Egorov, O. A.; Sigurdsson, Helgi; Shelykh, Ivan; Skryabin, D. V.; Walker, P. M.; Clarke, E.; Royall, B.; Skolnick, M. S.; Krizhanovskii, D. N. (American Physical Society (APS), 2018-04-19)
    We explore phase transitions of polariton wave packets, first, to a soliton and then to a standing wave polariton condensate in a multimode microwire system, mediated by nonlinear polariton interactions. At low excitation density, we observe ballistic ...