Self-assembled thin film of imidazolium ionic liquid on a silicon surface: Low friction and remarkable wear-resistivity
Source abstract
Abstract
Abstract Imidazolium-hexafluorophosphate (ImPF 6 ) ionic liquid thin film is prepared on a silicon surface using 3-chloropropyltrimethoxysilane as a bifunctional chemical linker. XPS result revealed the covalent grafting of ImPF 6 thin film on a silicon surface. The atomic force microscopic images demonstrated that the ImPF 6 thin film is composed of nanoscopic pads/clusters with height of 3–7 nm. Microtribological properties in terms of coefficient of friction and wear-resistivity are probed at the mean Hertzian contact pressure of 0.35–0.6 GPa under the rotational sliding contact. The ImPF 6 thin film exhibited low and steady coefficient of friction ( μ = 0.11) along with remarkable wear-resistivity to protect the underlying silicon substrate. The low shear strength of ImPF 6 thin film, the covalent interaction between ImPF 6 ionic liquid thin film and underlying silicon substrate, and its regular grafting collectively reduced the friction and improved the anti-wear property. The covalently grafted ionic liquid thin film further shows immense potential to expand the durability and lifetime of M/NEMS based devices with significant reduction of the friction.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Lubricants and Their Additives · Force Microscopy Techniques and Applications · Ionic liquids properties and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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