In: Analytical and Bioanalytical Chemistry, 2003, vol. 377, no. 3, p. 578-586
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In: Zeitschrift für Physikalische Chemie, 1989, vol. 163, no. Part_2, p. 579-584
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In: Nature, 2002, vol. 414, p. 353-358
Mobility — the transport of people and goods — is a socioeconomic reality that will surely increase in the coming years. It should be safe, economic and reasonably clean. Little energy needs to be expended to overcome potential energy changes, but a great deal is lost through friction (for cars about 10 kWh per 100 km) and low-efficiency energy conversion. Vehicles can be run either by...
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Thèse de doctorat : Université de Fribourg, 2002 ; Nr. 1387.
The present thesis treats the local structural and electronic modification induced by point defects incorporated in sp2-bonded carbon networks. The work is motivated by the ongoing efforts to miniaturise electronic devices down to the molecular level. The electronic properties of devices working at this level can be substantially altered due to the presence of single atomic defects. Carbon-based...
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Thèse de doctorat : Université de Fribourg, 2001 ; Nr. 1337.
The development of electronic devices based on micron-sized vacuum electron sources during the last decades [1] have triggered intense research on highly efficient carbon based thin film electron emitters [2]. We developed a new vacuum field emission apparatus composed of a field emission microscope (FEM) and a scanning anode field emission microscope (SAFEM), in order to investigate the low...
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Thèse de doctorat : Université de Fribourg, 2002 ; no 1398.
After the discovery by R. Kroto and H. Smalley of fullurene like the C60 [1], S. Iijima discovered six year later an other allotropic form of carbon namely the nanotubes [2]. From 1991 the scientists investigated many different synthesis process in order to obtain fullerenes as carbon nanotubes (CNT) with various ratio and physical properties. Due to the mechanical and electrical characteristics...
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Thèse de doctorat : Université de Fribourg, 2004 ; no 1467.
The presented work is treating surface scientific aspects of selected materials related to tribology. Tribology is one of the oldest problems humans try to master. It is highly interdisciplinary and there is probably no topic, where so much effort has been put into to gain a deeper understanding. But still, while the role of the surface in tribology is perceived and accepted, a general...
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Thèse de doctorat : Université de Fribourg : 2002 ; no 1388.
The biocompatibility of materials in implant or biosensor fields strongly depends on first interactions occurring between a given surface and a biological environment. It is well-known that a living body brought into contact with a surface will induce protein adsorption, which creates the interface, on which proteins or cells will adsorb. The interactions can be influenced by modifying the...
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