Bronze-mean hexagonal quasicrystal
The most striking feature of conventional quasicrystals is their nontraditional symmetry characterised by icosahedral, dodecagonal, decagonal, or octagonal axes. The symmetry and the aperiodicity of these materials stem from an irrational ratio of two or more length scales controlling their structure, the best-known examples being the Penrose and the Ammann-Beenker tiling as two-dimensional models related to the golden and the silver mean, respectively. Surprisingly, no other metallic-mean tilings have been discovered so far. Here we propose a self-similar bronze-mean hexagonal pattern, which may be viewed as a projection of a higher-dimensional periodic lattice with a Koch-like snowflake projection window. We use numerical simulations to demonstrate that a disordered variant of this quasicrystal can be materialised in soft polymeric colloidal particles with a core-shell architecture. Moreover, by varying the geometry of the pattern we generate a continuous sequence of structures, which provide an alternative interpretation of quasicrystalline approximants observed in several metal- silicon alloys.
2017
2018-09-14 10:27:05
1033
quasicrystals, colloids, metallic mean, bronze mean
kvazikristali, koloidi, kovinsko razmerje, bronasto razmerje
Tomonari
Dotera
70
Shinichi
Bekku
70
Primož
Ziherl
70
UDK
4
53
ISSN pri članku
9
1476-1122
DOI
15
10.1038/NMAT4963
COBISS_ID
3
30811175
OceCobissID
13
2763034
RAZ_Dotera_Tomonari_i2017.pdf
10073919
Predstavitvena datoteka
2018-09-14 10:44:38