Functionalization of silicon step arrays I: Au passivation of stepped Si„111... templates
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چکیده
The growth mode of Au on stepped Si(111)737 surfaces is determined by scanning tunneling microscopy, with the goal of providing a continuous gold layer that replicates the step morphology. Functionalization with gold allows attaching organic and biomolecules via thiol groups ~e.g., alkanes and DNA!. On clean Si~111!, gold grows in the Stranski–Krastanov mode and produces islands with a size comparable to the step spacing. A Ti wetting layer produces smooth Au films that preserve the step topography down to a scale of a few nanometers. © 2001 American Institute of Physics. @DOI: 10.1063/1.1397288#
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تاریخ انتشار 2001