Sökning: "polarization anisotropy"

Visar resultat 1 - 5 av 40 avhandlingar innehållade orden polarization anisotropy.

1. 1. Quantum Wavepacket Dynamics in Molecular and Trapped Ion Systems

   Författare :Dong Wang; Tony Hansson; Volker Engel; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wavepacket; revival; anisotropy; polarization; Molecular physics; Molekylfysik; kemisk fysik; Chemical Physics;

   Sammanfattning : The motions of a wavepacket in the two coupled potentials studied in this thesis can be classified into either bistable or astable motion according to the wavepacket interference at the curve crossing. Bistable motion, in which the wavepacket performs a coupled oscillation but remains in the same adiabatic and diabatic state, can exist both in bound-bound systems and bound-unbound ones with long time stability. LÄS MER

3. 2. Light polarization in single molecule spectroscopy: From visualization of structural anisotropy and energy transfer to super-resolution imaging with orientational contrast

   Författare :Daniel Thomsson; Kemisk fysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Single-molecule spectroscopy; π-conjugated polymers; blinking; fluorescence brightness; low temperature; polarization anisotropy; 2D polarization; energy transfer; super resolution; Fourier transform;

   Sammanfattning : Π-conjugated polymers are an important class of materials which can be used in e.g. photoelectric (solar cells) or electroluminescent (displays) devices. These materials are implemented in a number of applications these days since a lot is already known about them. LÄS MER

4. 3. Light propagation in an anisotropically scattering medium

   Författare :Elena Vasileva; Sergei Popov; Miguel A. Alonso; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; anisotropic light scattering; scattering material characterization; polarization dependent scattering; diffusive media; hierarchical structure; biocomposites; wood modification; transparent wood; microfibrils angle; organic materials; polymer active devices; dye lasers; coherence; polarization; degree of polarization.; Fysik; Physics;

   Sammanfattning : Scattering is the main phenomenon of light-matter interaction. In this thesis, we consider one specific case of light propagation in a material whose structure causes anisotropic optical scattering - transparent wood. LÄS MER

5. 4. Magnetism and Structure of Thin 3d Transition Metal Films : XMCD and EXAFS using Polarized Soft X-Rays

   Författare :Anders Hahlin; Dimitri Arvanitis; Olof Karis; Claus Schneider; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; thin film; xmcd; exafs; anisotropy; coherence; circular polarization; magnetism; Fe; Co; Ag; Fysik; Physics; Fysik; Fysik; Physics;

   Sammanfattning : In this Thesis the magnetic and structural properties of thin epitaxial Fe, Co, and Ni films are discussed. Some of the in-situ prepared samples were used to characterize the degree of circular polarization of the newly installed beamline D1011 at MAX-lab. LÄS MER

7. 5. Electronic addressing of ferroelectric liquid crystals

   Författare :Tomasz Matuszczyk; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multiplexing; smectic; displays; ferroelectricity; black mask; polarization; mesophases; light modulators; surface-stabilized structure; light valve; dielectric anisotropy; polarized light; liquid crystals; chirality; ferroelectric liquid crystals; dither;

   Sammanfattning : .... LÄS MER