Browsing Institutt for fysikk by Title
Now showing items 296-315 of 2675
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Case study of a mesospheric wall event over Ferraz station, Antarctica (62 degrees S)
(Journal article; Peer reviewed, 2011)On 16–17 July 2007 during an observational campaign at Comandante Ferraz Antarctic Station (62° S, 58° W), a mesospheric wall was observed with an airglow all-sky imager. The wave appeared like an extensive dark region in ... -
Casimir effect in Randall-Sundrummodels
(Master thesis, 2009) -
Casimir force and its relation to surface tension
(Journal article; Peer reviewed, 2017)From energy considerations there is reason to expect that the work done by Casimir forces during a slow displacement of the parallel plates reflects the free energy of the surface tension of the adjacent surfaces. We show ... -
Casimir force between a half-space and a plate of finite thickness
(Journal article; Peer reviewed, 2016)Zero-frequency Casimir theory is analyzed from different viewpoints, with the aim of obtaining further insight into the delicate Drude-plasma issue that turns up when one considers thermal corrections to the Casimir force. ... -
Casimir friction between dense polarizable media
(Journal article; Peer reviewed, 2013)The present paper—a continuation of our recent series of papers on Casimir friction for a pair of particles at low relative particle velocity—extends the analysis, so as to include dense media. The situation becomes, in ... -
Casimir friction between dense polarizable media
(Peer reviewed; Journal article, 2013)The present paper—a continuation of our recent series of papers on Casimir friction for a pair of particles at low relative particle velocity—extends the analysis, so as to include dense media. The situation becomes, in ... -
Cation Disorder in Ferroelectric Ba4M2Nb10O30 (M = Na, K, and Rb)Tetragonal Tungsten Bronzes
(Journal article; Peer reviewed, 2022) -
Causality in quantum field theory with classical sources
(Journal article; Peer reviewed, 2019)In an exact quantum-mechanical framework we show that space-time expectation values of the second-quantized electromagnetic fields in the Coulomb gauge in the presence of a classical conserved source automatically lead to ... -
Cavity Quantum Electrodynamics
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:282, Doctoral thesis, 2013)This thesis is an investigation of the following four key concepts related to light: The position dependent Lamb-shift giving rise to a magnetic Casimir-Polder force close to a dielectric medium has been studied. Memory ... -
Cavity-mediated impact of superconductors on ferromagnetic insulators
(Doctoral theses at NTNU;2022:254, Doctoral thesis, 2022)This dissertation is a presentation of the research conducted during three years at the QuSpin Center for Quantum Spintronics, on the cavity-mediation of interactions between ferromagnetic insulators (FI) and superconductors ... -
Cavity-mediated superconductor–ferromagnetic-insulator coupling
(Peer reviewed; Journal article, 2023)A recent proof of concept showed that cavity photons can mediate superconducting (SC) signatures to a ferromagnetic insulator (FI) over a macroscopic distance [A. T. G. Janssønn et al., Phys. Rev. B 102, 180506(R) (2020)]. ... -
Cellular Interaction with Polymeric Nanoparticles: The Effect of PEGylation and Monomer Composition
(Master thesis, 2013)It is of importance to understand which nanoparticle properties that govern the interactions between particles and cells, in order to develop a nanocarrier with the desired functionality. In this thesis, nanoparticles made ... -
Cellular uptake and intracellular degradation of poly(alkyl cyanoacrylate) nanoparticles
(Journal article; Peer reviewed, 2016)Background Poly(alkyl cyanoacrylate) (PACA) nanoparticles have shown promise as drug carriers both to solid tumors and across the blood–brain barrier. Efficient drug delivery requires both high cellular uptake of the ... -
Cellular Uptake of Nanoparticles by Sonoporation
(Master thesis, 2017)Encapsulation of anti-cancer drugs in nanoparticles (NPs) can solve many of the problems and side-effects related to cancer treatment today. By exposing micrometer-sized gas-filled bubbles to ultrasound, cellular uptake ... -
Centrosymmetric Tetragonal Tungsten Bronzes A4Bi2Nb10O30 (A = 2 Na, K, Rb) with a Bi 6s Lone Pair
(Peer reviewed; Journal article, 2022)A first-principles study of the tetragonal tungsten bronze (TTB) K4Bi2Nb10O30 has suggested that the Bi 6s lone pair causes in-plane polarization (within the a–b plane), corresponding to the one found in Pb5Nb10O30 (PN), ... -
Ceramic Cr:ZnS laser mode-locked by graphene
(Chapter, 2014)We report a high-power graphene mode-locked ceramic Cr:ZnS-laser, producing 3.9 nJ, 140 fs pulses with 45 nm spectral bandwidth at 270 MHz repetition rate, at output power for the first time exceeding 1 W level. -
Cerebral Hemodynamics in Normal Neonates During Tilt: Computer Modelling and Experiments
(Master thesis, 2019)Nyfødte barn er sårbare for å få forstyrret blodstrømmen i hjernen. I verste fall kan forstyrrelsen føre til hjerneskader og ende med død eller livsvarige funksjonsnedsettelser. Et ultralyd-system kalt NeoDoppler har nylig ... -
CFD Study of a 10 MW Offshore Horizontal Axis Wind Turbine Blade
(Master thesis, 2011)This Master thesis is a study of wind turbine aerodynamics on a 10 MW offshore wind turbine blade with a Computational Fluid Dynamics, CFD, approach.The objectives for the thesis were, (i) make a Computer Aided Design, ... -
Chaotic chirped-pulse oscillators
(Journal article; Peer reviewed, 2013)We present results of experimental investigation of the chaotic and quasi-periodic regime in the chirped-pulsed (dissipative soliton) Cr:ZnS and Cr:ZnSe mid-IR oscillators with significant third-order dispersion. The ... -
Chaotic regime in chirped-pulse mid-IR oscillators
(Chapter, 2013)We present experimental investigation of the chaotic mode-locking operation regime in two novel chirped-pulsed Cr:ZnS and Cr:ZnSe mid-IR lasers. The long-term stable regime is caused by the nonlinear interaction of dispersive ...