Facile synthesis of single crystalline metallic RuO2 nanowires and electromigration-induced transport properties

Yumin Lee, Byeong Uk Ye, Hak Ki Yu, Jong Lam Lee, Myung Hwa Kim, Jeong Min Baik

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

We report a simple strategy to synthesize highly crystalline ruthenium dioxide (RuO2) nanowires by atmospheric pressure chemical vapor deposition in supercooled liquid nanodroplets without the use of catalyst particles. The nanowires are single crystals with no discernible amorphous layers or defects. The pretreatment of the substrate is found to be effective for the position controlled growth of the nanowires as small as 10 nm. The RuO2 nanowires have extremely low electrical resistivity of 62.5 ± 8.8 μΩ•cm and uniform electrical materials characteristics, regardless of size. By passing high current (>107 A/cm2) through the nanowires, very small nanogaps of less than 5 nm are produced, which can be explained by a heuristic model, in which electromigrative and surface diffusional effects are included.

Original languageEnglish
Pages (from-to)4611-4615
Number of pages5
JournalJournal of Physical Chemistry C
Volume115
Issue number11
DOIs
StatePublished - 24 Mar 2011

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