Browsing Institutt for fysikk by Title

Now showing items 107-126 of 2655

    • Affect of Time Dependent Magnetization on SFS junctions: SFS, Josephson Current, Superconductor, Ferromagnetic, Time dependent field 

      Hedayatfar, Keivan (Master thesis, 2013)
      SFS junctions shows interesting properties, since these properties strongly related to geometry of device and current carriers status, one can control these properties with changing external conditions, such as changing ...

    • After-gate attack on a quantum cryptosystem 

      Wiechers, Carlos; Lydersen, Lars Vincent Van de Wiel; Wittmann, Christoffer; Elser, Dominique; Skaar, Johannes; Marquardt, Christoph; Makarov, Vadim; Leuchs, Gerd (Journal article; Peer reviewed, 2011)
      We present a method to control the detection events in quantum key distribution systems that use gated single-photon detectors. We employ bright pulses as faked states, timed to arrive at the avalanche photodiodes outside ...

    • Aging and Failure of a Polymer Chain under Tension 

      Charan, Harish; Hansen, Alex; Hentschel, H. George E.; Procaccia, Itamar (Peer reviewed; Journal article, 2021)
      The rupture of a polymer chain maintained at temperature T under fixed tension is prototypical to a wide array of systems failing under constant external stress and random perturbations. Past research focused on analytic ...

    • Airglow Derived Measurements of Q-Branch Transition Probabilities for Several Hydroxyl Meinel Bands 

      Franzen, Christoph; Espy, Patrick Joseph; hofmann, niklas; Hibbins, Robert; Djupvik, Anlaug Amanda (Journal article; Peer reviewed, 2019)
      Spectroscopic measurements of the hydroxyl (OH) airglow emissions are often used to infer neutral temperatures near the mesopause. Correct Einstein coefficients for the various transitions in the OH airglow are needed to ...

    • Akselerasjonen går vel inn mot sentrum, ikke sant? 

      Jacobsen, Ida Christine Molvig (Master thesis, 2020)
      Sammendrag For å kunne gå opp til eksamen eller annen avsluttende vurdering i emner innen høyere utdanning må studentene ofte gjennomføre og få godkjent en viss andel obligatoriske arbeidskrav i løpet av et semester. ...

    • Alexithymia and professional quality of life in radiation oncology: The moderator effect of the professional profile 

      Franco, Pierfrancesco; Di Tella, Marialaura; Tesio, Valentina; Gasnier, Anne; Petit, Steven; Spalek, Mateusz; Bibault, Jean-Emmanuel; Dubois, Ludwig; Mullaney, Laura; Redalen, Kathrine Røe; Chargari, Cyrus; Perryck, Sophie; Bittner, Martin-Immanuel; Bertholet, Jenny; Castelli, Lorys (Peer reviewed; Journal article, 2021)
      Background and purpose Cancer care can be taxing. Alexithymia, a personality construct characterized by difficulties in identifying and describing feeling and emotions, an externally-oriented thinking style and scarcity ...

    • Alginate Microsphere Encapsulation of Drug-Loaded Nanoparticles: A Novel Strategy for Intraperitoneal Drug Delivery 

      Fleten, Karianne Giller; Hyldbakk, Astrid; Einen, Caroline; Benjakul, Sopisa; Strand, Berit Løkensgard; Davies, Catharina de Lange; Mørch, Ýrr Asbjørg; Flatmark, Kjersti (Peer reviewed; Journal article, 2022)
      Alginate hydrogels have been broadly investigated for use in medical applications due to their biocompatibility and the possibility to encapsulate cells, proteins, and drugs. In the treatment of peritoneal metastasis, rapid ...

    • Alkaline oxide interface modifiers for silicon fiber production 

      Nordstrand, Erlend Fjøsne; Dibbs, Andrew; Eraker, Andreas Juvkam; Gibson, Ursula (Journal article; Peer reviewed, 2013)
      We demonstrate the ability to pull small diameter silicon-core fibers with low oxygen content by using interface modifiers between the silica cladding and the semiconductor. Alkali earths scavenge oxygen and form a ...

    • All-Fiber Optical Supercontinuum Source at 1.7-2.9 μm 

      Dvoyrin, Vladislav; Sorokina, Irina T (Chapter, 2013)
      We report supercontinuum generation in the range of 1.7-2.9 μm at up to 3.08 W of output power from a Tm-doped pulsed fiber laser emitting between 1.9-2.5 μm, spliced with a nonlinear fluoride or germanate fiber.

    • All-fiber optical supercontinuum sources in 1.7-3.2 μm range 

      Dvoyrin, Vladislav; Sorokina, Irina T (Journal article; Peer reviewed, 2014)
      We report supercontinuum generation in the 1.7-2.9 μm range with up to 3.08 W of output power and in the range of 1.93-3.18 μm with up to 3.8 W of output power from all-fiber MOPA pulsed systems with Tm-doped fiber mode-locked ...

    • All-fibre heterogeneously-integrated frequency comb generation using silicon core fibre 

      Sohanpal, Ronit; Ren, Haonan; Deakin, Callum; Heidt, Alexander; Hawkins, Thomas A.; Ballato, John; Gibson, Ursula; Peacock, Anna; Liu, Zhixin (Peer reviewed; Journal article, 2022)
      Originally developed for metrology, optical frequency combs are becoming increasingly pervasive in a wider range of research topics including optical communications, spectroscopy, and radio or microwave signal processing. ...

    • All-laser-microprocessed waveguide Cr:ZnS laser 

      Sorokin, Evgeni; Bushunov, Andrey; Tolstik, Nikolai; Teslenko, Andrei; Einmo, Eskil; Tarabrin, Mikhail; Lazarev, Vladimir; Sorokina, Irina T (Peer reviewed; Journal article, 2022)
      We report the proof-of-concept of an operational laser active medium with a depressed cladding waveguide manufactured in the volume of a Cr2+:ZnS single-crystalline sample and antireflection microstructures fabricated on ...

    • All-optical high-speed modulation of THz transmission through silicon core optical fibers 

      Sørgård, Trygve Reinertsen; Hawkins, Thomas; Ballato, John; Österberg, Ulf Lennart; Gibson, Ursula (Journal article; Peer reviewed, 2021)
      High speed optical modulation of THz radiation is of interest for information processing and communications applications. In this paper infrared femtosecond pulses are used to generate free carriers that reduce the THz ...

    • All-optical Magnetisation Switching in Two-dimensional Metallic Ferro- and Antiferromagnetic Systems 

      Krogen, Andreas Sandø (Master thesis, 2018)
      Motivated by recent experimental and theoretical work on ultrafast optical switching of magnetic order in ferromagnetic and antiferromagnetic materials, we study the influence of polarised light on the spin polarisation ...

    • Alloy structure of rare earth Ce with Pt base metal, and the adsorption of CO 

      Nigussa, Kenate Nemera; Støvneng, Jon Andreas (Peer reviewed; Journal article, 2019)
      The alloy structure of Ce and Pt inter-metallics is investigated with density functional theory. A systematic analysis of different alloy structures and surface terminations, as well as adsorption of CO in different sites ...

    • Alpha-Synuclein Strain Variability in Body-First and Brain-First Synucleinopathies 

      Just, Mie Kristine; Gram, Hjalte; Theologidis, Vasileios; Jensen, Poul Henning; Nilsson, K Peter R; Lindgren, Mikael; Knudsen, Karoline; Borghammer, Per; Van Den Berge, Nathalie (Peer reviewed; Journal article, 2022)
      Pathogenic alpha-synuclein (asyn) aggregates are a defining feature of neurodegenerative synucleinopathies, which include Parkinson's disease, Lewy body dementia, pure autonomic failure and multiple system atrophy. Early ...

    • Alternative coalescence model for deuteron, tritium, helium-3 and their antinuclei 

      Kachelriess, Michael; Ostapchenko, Sergey; Tjemsland, Jonas (Peer reviewed; Journal article, 2020)
      Antideuteron and antihelium nuclei have been proposed as a detection channel for dark matter annihilations and decays in the Milky Way, due to the low astrophysical background expected. To estimate both the signal for ...

    • Amphinex-(TPCS2a)-based photodynamic therapy and photochemical internalization of bleomycin and temozolomide: - in vitro studies on the glioma cell line F98 

      Hauge, Anette (Master thesis, 2013)
      Presented in this master's thesis are studies on the response of glioma cells from rat (F98) to in vitro photodynamic therapy (PDT) and photochemical internalization (PCI), utilizing as photosensitizer the amphiphilic ...

    • Amphiphilic Protoporphyrin IX Derivatives as New Photosensitizing Agents for the Improvement of Photodynamic Therapy 

      Desgranges, Stéphane; Juzenas, Petras; Vasovic, Vlada; Gederaas, Odrun Arna; Lindgren, Mikael; Warloe, Trond; Qian, Peng; Contino-Pepin, Christiane (Peer reviewed; Journal article, 2022)
      Photodynamic therapy (PDT) is a non-invasive therapeutic modality based on the interaction between a photosensitive molecule called photosensitizer (PS) and visible light irradiation in the presence of oxygen molecule. ...

    • Amyloid-Like Aggregation in Native Protein and its Suppression in the Bio-Conjugated Counterpart 

      Mukhopadhyay, Anasua; Stoev, Iliya D.; King, David. A.; Sharma, Kamendra P.; Eiser, Erika (Peer reviewed; Journal article, 2022)
      Prevention of protein aggregation and thus stabilization of proteins has large biological and biotechnological implications. Here we introduce Dynamic Light Scattering (DLS) and DLS-based microrheology to show how native ...