Abstract
The fabrication of oxide patterns on titanium (Ti), with a spatial resolution of 20 nm, was accomplished by the use of a scanning tunneling microscope (STM) through applying a positive sample bias (Vs) voltage of +3.0 to +8.0 V in the presence of adsorbed water on Ti. The fabricated patterns were observed as swelled structures in the STM images acquired at Vs = -3.0 V. Surface swelling was induced only when Vs was set positively, and the height of the oxide layer increased with increasing Vs, which suggested that the pattern formation was attributed to electrochemical oxidation of Ti; anodization of Ti with adsorbed water. The role of the faradaic current flows during STM tip-induced anodization for tip control is also discussed in terms of a scanning electrochemical microscope.
Original language | English |
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Pages (from-to) | 4352-4357 |
Number of pages | 6 |
Journal | Journal of physical chemistry |
Volume | 98 |
Issue number | 16 |
DOIs | |
State | Published - 1 Jan 1994 |