Multiwalled ice helixes and ice nanotubes

被引：158

作者：

Bai, Jaeil

Wang, Jun

Zeng, X. C. ^{[1
]}

机构：

[1] Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA

[2] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2006年 / 103卷 / 52期

关键词：

carbon nanotube; high density nano-ice; nano-ice helix;

D O I：

10.1073/pnas.0608401104

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：19664 / 19667

页数：4

共 30 条

[1] Effect of flexibility on hydrophobic behavior of nanotube water channels [J].