Abstract
A Boerdijk-Coxeter-Bernal (BCB) helix is made of linearly stacked regular tetrahedra (tetrahelix). As such, it is chiral without nontrivial translational or rotational symmetries. We demonstrate here an example of the chiral BCB structure made of totally symmetrical gold atoms, created in nanowires by direct chemical synthesis. Detailed study by high-resolution electron microscopy illustrates their elegant chiral structure and the unique one-dimensional "pseudo-periodicity". The BCB-type atomic packing mode is proposed to be a result of the competition and compromise between the lattice and surface energy.
Original language | English (US) |
---|---|
Pages (from-to) | 12746-12752 |
Number of pages | 7 |
Journal | Journal of the American Chemical Society |
Volume | 136 |
Issue number | 36 |
DOIs | |
State | Published - Sep 2014 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledgements: This research was supported by baseline research funds to Y.H. from King Abdullah University of Science and Technology; the SABIC postdoc fellowship to Y.Z. from Saudi Basic Industries Corporation; and the PSF funding to H.C. from the A*Star of Singapore (SERC 112-120-2011).
ASJC Scopus subject areas
- Biochemistry
- Colloid and Surface Chemistry
- General Chemistry
- Catalysis