Sökning: "colloids"
Visar resultat 21 - 25 av 82 avhandlingar innehållade ordet colloids.
21. Charged colloids observed by electrophoretic and diffusion NMR
Sammanfattning : The thesis deals partly with methodology including construction of hardware and new pulse sequences in the field of electrophoretic NMR, and partly with practical use of ENMR and diffusion NMR in the investigation of charged colloidal systems. Several sources of artefacts are investigated, including gas production at the electrodes, electroosmosis and Joule heating effects that can cause convection. LÄS MER
22. The Influence of Polyelectrolytes on the Stability of Colloids
Sammanfattning : The interaction between two colloids with grafted polyelectrolytes in aqueous solution is studied within the primitive model by Monte Carlo simulations. For neutral colloids with grafted polyelectrolytes and in absence of salt the interaction is strongly repulsive in absence of salt. LÄS MER
23. Fluorescence Microscopy Applied to the Dynamics of Latex Colloids
Sammanfattning : .... LÄS MER
24. Generation, stability and migration of montmorillonite colloids in aqueous systems
Sammanfattning : In Sweden the encapsulated nuclear waste will be surrounded by compacted bentonite in the granitic host rock. In contact with water-bearing fractures the bentonite barrier may release montmorillonite colloids that may be further transported in groundwater. LÄS MER
25. Quantitative Surface Enhanced Raman Spectroscopy
Sammanfattning : Surface enhanced Raman spectroscopy (SERS) is a very attractive technique for detection of various organic and inorganic molecules due to its sensitivity and selectivity. The surface enhancement is achieved when the molecules of interest are on or in the vicinity of a metal surface, usually gold and silver. LÄS MER