Sökning: "carbon surfaces"

Visar resultat 6 - 10 av 188 avhandlingar innehållade orden carbon surfaces.

1. 6. Fabrication and Functionalization of Graphene and Other Carbon Nanomaterials in Solution

   Författare :Erika Widenkvist; Ulf Jansson; Reine Wallenberg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Graphene; Functionalization; Carbon nanotubes; Carbon nanosheets; Organic chemistry; Organisk kemi; Organisk kemi; Organic Chemistry;

   Sammanfattning : In the last decades several new nanostructures of carbon have been discovered, including carbon nanotubes (CNTs), and the recently discovered 2-dimensional graphene. These new materials exhibit extraordinary and unique properties—making them extremely interesting both for fundamental science and for future applications. LÄS MER

3. 7. Microengineered CVD Diamond Surfaces : Tribology and Applications

   Författare :Joakim Andersson; Staffan Jacobson; Arto Alahelisten; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Diamond; DLC; Tribology; Friction; Environment; Microengineering; Materialvetenskap; Materials science; Teknisk materialvetenskap;

   Sammanfattning : Recent developments in thin film synthesis of diamond have facilitated a host of new technical applications. These are motivated by the many attractive properties of diamond, for example high hardness, chemical inertness, transparency and heat conductivity. Unfortunately, these properties also make it difficult to fashion complex geometries. LÄS MER

4. 8. Decontamination of implant surfaces

   Författare :Yuki Ichioka; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dental implant; peri-implantitis; surface decontamination;

   Sammanfattning : Peri-implantitis is a pathological condition occurring in tissues around dental implants. It is caused by microorganisms and characterized by inflammation in the peri-implant connective tissue and progressive loss of supporting bone. The goal of treatment of peri-implantitis is to resolve inflammation and to arrest further loss of supporting bone. LÄS MER

5. 9. Adsorption of Molecules on Metal Surfaces Studied by High Resolution Core Level Photoemission

   Författare :Andreas Beutler; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Core level photoemission; molecules; adsorption; single crystal surfaces; metals; metal films; vibrations of adsorbed molecules; surface ordering; carbon monoxide; photoelectron spectroscopy; surface diffusion; Atomic and molecular physics; Atom- och molekylärfysik; Fysicumarkivet A:1998:Beutler;

   Sammanfattning : Various aspects of the adsorption of molecules on metal surfaces have been studied making use of different properties of high resolution core level photoemission. A thorough investigation has been performed of the ordering and the site occupancy of CO overlayers on Rh(111). CO has been shown to adsorb in on-top and three-fold-hollow sites. LÄS MER

7. 10. Physisorption of CO and N2O on ceria surfaces

   Författare :Carsten Müller; Kersti Hermansson; Konstantin Neyman; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ceria; carbon monoxide; nitrous oxide; embedded cluster; physisorption; method of increments; CCSD T ; vibrational frequencies; Quantum chemistry; Kvantkemi; Quantum Chemistry; kvantkemi;

   Sammanfattning : Physisorption of CO and N2O on surfaces of ceria (CeO2) was investigated by means of high-level quantum-mechanical embedded cluster calculations. Both systems have high relevance in the field of environmental chemistry and heterogeneous catalysis. LÄS MER