Sökning: "charge diffusion"
Visar resultat 1 - 5 av 152 avhandlingar innehållade orden charge diffusion.
1. Exploring Dye-Sensitized Mesoporous NiO Photocathodes : from Mechanism to Applications
Sammanfattning : Increasing attention has been paid on solar energy conversion since the abundant solar energy possesses the potential to solve the problems on energy crisis and climate change. Dye-sensitized mesoporous NiO film was developed as one of the attractive photocathodes to fabricate p-type dye-sensitized solar cells (p-DSCs) and dye-sensitized photoelectrosynthetic cells (p-DSPECs) for electricity and chemical fuels generation, respectively. LÄS MER
2. Molecular Interactions Studied by Electrophoretic and Diffusion NMR
Sammanfattning : Even though electrophoretic NMR (eNMR) experiments may provide unique chemical information and have been performed for three decades, the technique is still rarely applied, mainly because several experimental sources of artifacts have to be controlled to achieve accurate results. In this thesis, new experimental setups and protocols for accurate and precise eNMR experiments are presented. LÄS MER
3. Diffusion-Induced Nonlinear Dynamics in Carbon Nanomechanical Resonators
Sammanfattning : The emergence of nanoelectromechanical systems has enabled the development of sensors capable of detecting mass, charge, force, position, and spin with an unprecedented precision. In particular, the low mass, high resonant frequency, and high quality factor of carbon nanomechanical resonators make them ideal for the creation of a high sensitivity mass sensor. LÄS MER
4. Interrogating Diffusional Mass and Charge Transport in Catalytic Metal-Organic Frameworks
Sammanfattning : Molecular catalysts are efficient and selective for the electrochemical conversion of small molecules for energy conversion. Application of molecular species in a large-scale industrial setting requires stabilization in a heterogeneous support material. LÄS MER
5. Electrochemical Studies of Redox Properties and Diffusion in Self-Assembled Systems
Sammanfattning : In this thesis electron transfer reactions and diffusion of redox molecules in three different types of self-aggregated structures are investigated. Electrochemistry was used to investigate the redox potential and diffusion coefficients for redox active molecules with different polarity. The first aggregate system studied was the micellar phase. LÄS MER