Sökning: "thin film evaporation"

Visar resultat 1 - 5 av 53 avhandlingar innehållade orden thin film evaporation.

1. 1. Thin films of YBa2Cu3O7 deposited by co-evaporation, Josephson junctions, and DC-SQUIDS

   Författare :Per-Åke Nilsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microbridge; Josephson junction; BaF_{2< sub>}; co-evaporation; sub- #956; YBa_{2< sub>Cu3< sub>O7< sub>}; bi-crystal; DC-SQUID; thin film; m;

   Sammanfattning : .... LÄS MER

3. 2. Hydrodynamics and Heat Transfer in Vertical Falling Films with Smooth and Modified Heat-Transfer Surfaces – An Experimental and Numerical Investigation

   Författare :Anders Åkesjö; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; film thickness; local heat transfer coefficient; numerical simulations; heat transfer; falling film; VOF; evaporation.;

   Sammanfattning : High energy utilization efficiency is important to achieve a sustainable society. By having highly efficient heat exchangers, more energy can be recovered and reused at a lower cost. LÄS MER

4. 3. Electronic and Structural Properties of Thin Films of Phthalocyanines and Titanium Dioxide

   Författare :Ylvi Alfredsson; Hans Siegbahn; Anders Sandell; Carla Puglia; Kajsa Uvdal; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; photoelectron spectroscopy; x-ray absorption spectroscopy; phthalocyanine; titanium dioxide; electronic structure; electrochromic reactions; thin films; chemical vapor deposition; evaporation; Fysik; Physics; Fysik;

   Sammanfattning : This thesis is based on experimental studies in chemical physics. Titanium dioxide (TiO2) and phthalocyanine’s (Pc’s), interesting in many future perspectives, have been deposited as thin films and studied as follows. Information has been obtained on e.g. LÄS MER

5. 4. Thin-Film Electrocatalysts for Polymer Electrolyte Fuel Cells - Activity, Durability and Proton Conduction

   Författare :Björn Wickman; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nafion; thin film evaporation; PEMFC; platinum; titanium oxide; cathode; fuel cell; oxygen reduction reaction; electrocatalyst; proton conduction; model systems;

   Sammanfattning : The polymer electrolyte membrane fuel cell (PEMFC) is a potential technology for future energy conversion in sustainable energy systems. By using hydrogen from renewable energy sources and oxygen from the air, the fuel cell produces electricity with water as the only exhaust. LÄS MER

7. 5. Electrochromic materials : optical, electrophysical and structural properties

   Författare :Anne M. Andersson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mechanical stress; cyclic voltammetry; microstructure; topotaxy; infrared reflectance spectroscopy; window coating; optical characterization; optical characterization; smart window; x-ray electron spectroscopy; soft chemistry; intercalation; energy efficiency; evaporation; electrochromism; polymer electrolyte; ion storage; nickel oxide; Christiansen effect; structural characterization; transmission electron spectroscopy; chemical potential; vanadium oxide; sputtering; electrochemistry; tungsten oxide; thin film technolology; x-ray diffraction spectrometry; infrared reflectance spectroscopy; impedance spectroscpoy;

   Sammanfattning : .... LÄS MER