KAUST DepartmentAdvanced Membranes and Porous Materials Research Center
Physical Sciences and Engineering (PSE) Division
KAUST Catalysis Center (KCC)
MetadataShow full item record
AbstractA 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.
SponsorsThis 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).
PublisherAmerican Chemical Society (ACS)
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