Abstract
We report six phases of high-density nano-ice predicted to form within carbon nanotubes (CNTs) at high pressure. High-density nano-ice self-assembled within smaller-diameter CNT (17,0) exhibits a double-walled helical structure where the outer wall consists of four double-stranded helixes, which resemble a DNA double helix, and the inner wall is a quadruple-stranded helix. Four other double-walled nano-ices, self-assembled respectively in two larger-diameter CNTs (20,0 and 22,0), display tubular structure. Within CNT (24,0), the confined water can freeze spontaneously into a triple-walled helical nano-ice where the outer wall is an 18-stranded helix and the middle and inner walls are hextuple-stranded helixes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 19664-19667 |
| Number of pages | 4 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Volume | 103 |
| Issue number | 52 |
| DOIs | |
| State | Published - Dec 26 2006 |
Keywords
- Carbon nanotube
- High density nano-ice
- Nano-ice helix
ASJC Scopus subject areas
- General
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Cite this
Bai, J., Wang, J., & Zeng, X. C. (2006). Multiwalled ice helixes and ice nanotubes. Proceedings of the National Academy of Sciences of the United States of America, 103(52), 19664-19667. https://doi.org/10.1073/pnas.0608401104