Multiple-scale structures: from Faraday waves to soft-matter quasicrystals

For many years, quasicrystals were observed only as solid-state metallic alloys, yet current research is now actively exploring their formation in a variety of soft materials, including systems of macromolecules, nanoparticles and colloids. Much effort is being invested in understanding the thermody...

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Main Authors: Samuel Savitz, Mehrtash Babadi, Ron Lifshitz
Format: Article
Language:English
Published: International Union of Crystallography 2018-05-01
Series:IUCrJ
Subjects:
Online Access:http://scripts.iucr.org/cgi-bin/paper?S2052252518001161
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author Samuel Savitz
Mehrtash Babadi
Ron Lifshitz
author_facet Samuel Savitz
Mehrtash Babadi
Ron Lifshitz
author_sort Samuel Savitz
collection DOAJ
description For many years, quasicrystals were observed only as solid-state metallic alloys, yet current research is now actively exploring their formation in a variety of soft materials, including systems of macromolecules, nanoparticles and colloids. Much effort is being invested in understanding the thermodynamic properties of these soft-matter quasicrystals in order to predict and possibly control the structures that form, and hopefully to shed light on the broader yet unresolved general questions of quasicrystal formation and stability. Moreover, the ability to control the self-assembly of soft quasicrystals may contribute to the development of novel photonics or other applications based on self-assembled metamaterials. Here a path is followed, leading to quantitative stability predictions, that starts with a model developed two decades ago to treat the formation of multiple-scale quasiperiodic Faraday waves (standing wave patterns in vibrating fluid surfaces) and which was later mapped onto systems of soft particles, interacting via multiple-scale pair potentials. The article reviews, and substantially expands, the quantitative predictions of these models, while correcting a few discrepancies in earlier calculations, and presents new analytical methods for treating the models. In so doing, a number of new stable quasicrystalline structures are found with octagonal, octadecagonal and higher-order symmetries, some of which may, it is hoped, be observed in future experiments.
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spelling doaj.art-41638f5df2454791a99e67f29e8aba952022-12-22T01:35:25ZengInternational Union of CrystallographyIUCrJ2052-25252018-05-015324726810.1107/S2052252518001161gq5007Multiple-scale structures: from Faraday waves to soft-matter quasicrystalsSamuel Savitz0Mehrtash Babadi1Ron Lifshitz2Condensed Matter Physics, California Institute of Technology, Pasadena, CA 91125, USACondensed Matter Physics, California Institute of Technology, Pasadena, CA 91125, USACondensed Matter Physics, California Institute of Technology, Pasadena, CA 91125, USAFor many years, quasicrystals were observed only as solid-state metallic alloys, yet current research is now actively exploring their formation in a variety of soft materials, including systems of macromolecules, nanoparticles and colloids. Much effort is being invested in understanding the thermodynamic properties of these soft-matter quasicrystals in order to predict and possibly control the structures that form, and hopefully to shed light on the broader yet unresolved general questions of quasicrystal formation and stability. Moreover, the ability to control the self-assembly of soft quasicrystals may contribute to the development of novel photonics or other applications based on self-assembled metamaterials. Here a path is followed, leading to quantitative stability predictions, that starts with a model developed two decades ago to treat the formation of multiple-scale quasiperiodic Faraday waves (standing wave patterns in vibrating fluid surfaces) and which was later mapped onto systems of soft particles, interacting via multiple-scale pair potentials. The article reviews, and substantially expands, the quantitative predictions of these models, while correcting a few discrepancies in earlier calculations, and presents new analytical methods for treating the models. In so doing, a number of new stable quasicrystalline structures are found with octagonal, octadecagonal and higher-order symmetries, some of which may, it is hoped, be observed in future experiments.http://scripts.iucr.org/cgi-bin/paper?S2052252518001161quasicrystalssoft matterpattern formation
spellingShingle Samuel Savitz
Mehrtash Babadi
Ron Lifshitz
Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
IUCrJ
quasicrystals
soft matter
pattern formation
title Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
title_full Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
title_fullStr Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
title_full_unstemmed Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
title_short Multiple-scale structures: from Faraday waves to soft-matter quasicrystals
title_sort multiple scale structures from faraday waves to soft matter quasicrystals
topic quasicrystals
soft matter
pattern formation
url http://scripts.iucr.org/cgi-bin/paper?S2052252518001161
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