Regensburg 2010 – scientific programme
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O: Fachverband Oberflächenphysik
O 41: Poster Session I (Semiconductor Substrates: Epitaxy and growth; Semiconductor Substrates: Adsorbtion; Semiconductor Substrates: Solid-liquid interfaces; Semiconductor Substrates: Clean surfaces; Oxides and insulators: Epitaxy and growth; Oxides and insulators: Adsorption; Oxides and insulators: Clean surfaces; Organic, polymeric and biomolecular films - also with adsorbates; Organic electronics and photovoltaics, Surface chemical reactions; Heterogeneous catalysis; Phase transitions; Particles and clusters; Surface dynamics; Surface or interface magnetism; Electron and spin dynamics; Spin-Orbit Interaction at Surfaces; Electronic structure; Nanotribology; Solid/liquid interfaces; Graphene; Others)
O 41.95: Poster
Tuesday, March 23, 2010, 18:30–21:00, Poster B1
Liquid and solid lubrication for nanopositioning and nanomeasuring systems — Thomas Haensel1, Xiangjun Zhang2, Xiaohao Zhang2, Angela Keppler1, Stefan Krischok1, and •Syed Imad-Uddin Ahmed1 — 1Institut für Physik and Institut für Mikro- und Nanotechnologien, TU Ilmenau, P.O. Box 100565, 98684 Ilmenau, Germany — 2State Key Laboratory of Tribology, Tsinghua University, P.O. Box 100084, Beijing, P.R. China
One of the biggest challenges in the 21st century is to handle the decreasing structure sizes in the low nanometer range. A nanopositioning and nanomeasuring system developed at the TU Ilmenau is an enabling technology that makes this possible. For optimum operation of the positioning tool, it is necessary to have stable and controlled friction as well as low wear. This can be achieved by a combination of solid lubricants like diamond-like carbon (DLC) and liquid lubricants like ionic liquids (ILs). This contribution reports on friction and wear experiments made with tribometers. To implement this machine in vacuum, preliminary friction measurements in high vacuum were performed to ensure that a vacuum application is possible. Especially the liquid film lubrication with ILs might be very suitable as the IL vapor pressure is very low. The results show that in the combination of solid and liquid film lubrication, effects like polarity, viscosity and the force regime play an important role. The results and aspects, which are related with the achieved friction and wear, are discussed under the aspect of stable and low friction.