Type
ArticleKAUST Department
Advanced Membranes and Porous Materials Research CenterBiological and Environmental Sciences and Engineering (BESE) Division
Imaging and Characterization Core Lab
KAUST Catalysis Center (KCC)
Physical Characterization
Physical Science and Engineering (PSE) Division
Date
2014-09Online Publication Date
2014-09Print Publication Date
2014-09-10Permanent link to this record
http://hdl.handle.net/10754/563753
Metadata
Show full item recordAbstract
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.Sponsors
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).Publisher
American Chemical Society (ACS)PubMed ID
25126894ae974a485f413a2113503eed53cd6c53
10.1021/ja506554j
Scopus Count
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