Abstract
We report the formation of highly robust long-chained alkylsiloxane self-assembled monolayers (SAMs) on aluminum oxide films prepared by atomic-layer deposition (ALD). The surface chemistry and the morphological characteristics of the SAMs were examined by X-ray photoelectron spectroscopy, infrared spectroscopy, atomic-force microscopy, and contact-angle goniometry. The octadecylsiloxane-derived SAMs initially hydrolyze and deposit on the alumina surface as ∼1.8 nm thick, monolayer-high islands ≤50 nm in diameter. The size of these islands increases with time, likely through a surface-diffusion aggregation process. Coalescence of neighboring islands leads to a densely packed and robust monolayer on the alumina surface. The SAMs on ALD alumina are expected to be useful in a number of nanostructure applications where the combination of conformal alumina deposition and conformal coverage of the alumina by an organic layer is critical.
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81.16.Dn; 81.65.Kn; 82.45.Mp; 81.65.-b
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Yasseri, A., Kobayashi, N. & Kamins, T. Formation and characterization of long-chained alkylsiloxane self-assembled monolayers on atomic-layer-deposited aluminum oxide surfaces. Appl. Phys. A 84, 1–5 (2006). https://doi.org/10.1007/s00339-006-3595-z
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DOI: https://doi.org/10.1007/s00339-006-3595-z