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Multiwalled Ice Helixes And Ice Nanotubes, Jaeil Bai, Jun Wang, Xiao Cheng Zeng
Multiwalled Ice Helixes And Ice Nanotubes, Jaeil Bai, Jun Wang, Xiao Cheng Zeng
Xiao Cheng Zeng Publications
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 nanoice where the outer wall is an 18-stranded helix and the middle and inner walls are hextuple-stranded helixes.