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Published Online September 6, 2001
Science DOI: 10.1126/science.1062126

Reports

Submitted on May 1, 2001
Accepted on August 27, 2001

Ultrathin Single-Crystalline Silver Nanowire Arrays Formed in an Ambient Solution Phase

Byung Hee Hong 1, Sung Chul Bae 1, Chi-Wan Lee 1, Sukmin Jeong 1, Kwang S. Kim 1*

1 National Creative Research Initiative Center for Superfunctional Materials, Department of Chemistry, Division of Molecular and Life Sciences, Pohang University of Science and Technology, Hyojadong, Namgu, Pohang 790-784, Korea.

* To whom correspondence should be addressed. E-mail: kim{at}postech.ac.kr.

We report the synthesis of single-crystalline silver nanowires of atomic dimensions. The ultrathin silver wires with 0.4 nanometer width grow up to micrometer-scale length inside the pores of self-assembled calix[4]hydroquinone nanotubes by electro-/photo-chemical redox reaction in an ambient aqueous phase. The present sub-nanowires are very stable under ambient air and aqueous environments, unlike previously reported metal wires of ~1 nanometer diameter which existed only transiently in ultrahigh vacuum. The wires exist as coherently oriented three-dimensional arrays of ultrahigh density, and thus could be employed as model systems for investigating one-dimensional phenomena and as nanoconnectors for designing nanoelectronic devices.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)