Search for dissertations about: "Two-dimensional crystals"

Showing result 1 - 5 of 54 swedish dissertations containing the words Two-dimensional crystals.

2. 1. Two-Dimensional Photonic Crystals in InP-based Materials

   Author : Mikaël Mulot; KTH; []
   Keywords : Photonic crystals; photonic bandgap materials; indium phosphide; dry etching; chemically assisted ion beam etching; reactive ion etching; electron beam lithography; photonic integrated circuits; optical waveguides; resonant cavities; optical filterin;

   Abstract : Photonic crystals (PhCs) are structures periodic in thedielectric constant. They exhibit a photonic bandgap, i.e., arange of wavelengths for which light propagation is forbidden. READ MORE

4. 2. On ferromagnetic thin films and two-dimensional magneto-optic photonic crystals

   Author : Amir A. Jalali Roudsar; Ari Friberg; Ilkka Tittonen; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Physics; photonic crystals; physics; Fysik; Physics; Fysik;

   Abstract : This thesis presents results in two different neighboring areas of research: the magnetic properties of thin ferrite films and the application of the films in two-dimensional photonic crystals.In the first part, we investigate the accuracy of the customary method for determining the magnetic anisotropy constants of ferrite films by ferromagnetic resonance (FMR) experiment. READ MORE

5. 3. P-type ATPases studied by electron microscopy and two-dimensional crystallization

   Author : Kenneth Yijing Xian; Karolinska Institutet; Karolinska Institutet; []
   Keywords : electron microscopy; ion transport; membrane protein; P-type ATPase; two-dimensional crystallization;

   Abstract : Electron microscopy and two-dimensional crystallography have been used to study the molecular structures of the porcine renal Na+,K+-ATPase and the porcine gastric H+,K+-ATPase. In addition, morphological changes have been observed with electron cryomicroscopy from tubulovesicles in porcine gastric mucosae. READ MORE

6. 4. Microscopic Theory of Externally Tunable Exciton Signatures of Two-Dimensional Materials

   Author : Maja Feierabend; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; localized states; density matrix formalism; magnetic field; transition metal dichalcogenides; Bloch equations; organic inorganic heterostructures; dark excitons; strain;

   Abstract : Atomically thin transition metal dichalcogenides (TMDs) are in the focus of current research due to their efficient light-matter interaction and the remarkably strong Coulomb interaction that leads to tightly bound excitons. Due to their unique band structure, TMDs show a variety of bright and optically inaccessible dark excitonic states. READ MORE

7. 5. InP-based photonic crystals : Processing, Material properties and Dispersion effects

   Author : Audrey Berrier; Srinivasan Anand; Alfred Forchel; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photonic crystals; indium phosphide; photonic bandgap; Bloch modes; slow light; dispersion; coupled cavity waveguides; chemically assisted ion beam etching; lag effect; cavities; optical losses; carrier transport; carrier lifetimes; negative refraction; photonic bandstructure; Physics; Fysik;

   Abstract : Photonic crystals (PhCs) are periodic dielectric structures that exhibit a photonic bandgap, i.e., a range of wavelength for which light propagation is forbidden. The special band structure related dispersion properties offer a realm of novel functionalities and interesting physical phenomena. READ MORE