Facile Synthesis of Single Crystalline Metallic RuO2 Nanowires and Electromigration-Induced Transport Properties
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- Facile Synthesis of Single Crystalline Metallic RuO2 Nanowires and Electromigration-Induced Transport Properties
- Lee, Yumin; Ye, Byeong-Uk; Yu, Hak Ki; Lee, Jong-Lam; Kim, Myung Hwa; Baik, Jeong Min
- Amorphous layer; Atmospheric pressure chemical vapor deposition; Catalyst particles; Controlled growth; Diffusional effects; Electrical materials; Electrical resistivity; Facile synthesis; Heuristic model; High currents; Nanogaps; Pre-Treatment; Ruthenium dioxide; Single-crystalline; Supercooled liquids
- Issue Date
- AMER CHEMICAL SOC
- JOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.11, pp.4611 - 4615
- 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 mu Omega.cm and uniform electrical materials characteristics, regardless of size. By passing high current (>10(7) A/cm(2)) through the nanowires, very small nanogaps of less than 5 rim are produced, which can be explained by a heuristic model, in which electromigrative and surface diffusional effects are included.
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