TY - JOUR
T1 - Decahedra and Icosahedra Everywhere
T2 - The Anomalous Crystallization of Au and Other Metals at the Nanoscale
AU - Rogers, Blake
AU - Lehr, Alexander
AU - Velázquez-Salazar, J. Jesús
AU - Whetten, Robert
AU - Mendoza-Cruz, Ruben
AU - Bazan-Diaz, Lourdes
AU - Bahena-Uribe, Daniel
AU - José Yacaman, Miguel
N1 - Publisher Copyright: © 2023 Wiley-VCH GmbH.
PY - 2023/4
Y1 - 2023/4
N2 - Throughout history, objects with fivefold symmetry have been a popular topic of interest for artists, philosophers, and scientists. This may be because fivefold symmetry is very conspicuous in nature. In the case of crystals, fivefold rotational symmetry is mathematically forbidden, and macroscopic crystals exhibiting fivefold symmetry have never been shown to exist. Nevertheless, in the nanoworld, nanoparticles are often found with decahedral and icosahedral shapes that have an overall pseudo-fivefold symmetry. These structures are observed at many length scales, from 1 nm up to 1 µm. In this review, several reasons for the stability of fivefold nanoparticles are discussed. These include the formation of twin boundaries, surface reconstruction faceting, and other factors.
AB - Throughout history, objects with fivefold symmetry have been a popular topic of interest for artists, philosophers, and scientists. This may be because fivefold symmetry is very conspicuous in nature. In the case of crystals, fivefold rotational symmetry is mathematically forbidden, and macroscopic crystals exhibiting fivefold symmetry have never been shown to exist. Nevertheless, in the nanoworld, nanoparticles are often found with decahedral and icosahedral shapes that have an overall pseudo-fivefold symmetry. These structures are observed at many length scales, from 1 nm up to 1 µm. In this review, several reasons for the stability of fivefold nanoparticles are discussed. These include the formation of twin boundaries, surface reconstruction faceting, and other factors.
KW - decahedral and icosahedral nanoparticles
KW - electron microscopy
KW - nanoalloys
KW - nanotechnology
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U2 - 10.1002/crat.202200259
DO - 10.1002/crat.202200259
M3 - Review article
SN - 0232-1300
VL - 58
JO - Crystal Research and Technology
JF - Crystal Research and Technology
IS - 4
M1 - 2200259
ER -