Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass

Nakamura, Nobutomo; Nakashima, Shizuka; Ogi, Hirotsugu

doi:https://doi.org/10.1038/s41598-019-49120-1

Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass

Nakamura, Nobutomo; Nakashima, Shizuka; Ogi, Hirotsugu

Scientific Reports, 2019, 9, 12836

Number of Access:450（2025-11-25 02:18 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/93357

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Title	Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass
Creator	NRID 1000050452404 1000050452404 researchmap permalink nnakamura nnakamura Scopus Author ID 7403356186 7403356186 ORCID 0000-0002-5338-842X 0000-0002-5338-842X CreatorName Nakamura, Nobutomo
	CreatorName Nakashima, Shizuka
	NRID 1000090252626 1000090252626 researchmap permalink read0042771 read0042771 Scopus Author ID 35563683500 35563683500 ORCID 0000-0002-9602-5194 0000-0002-9602-5194 CreatorName Ogi, Hirotsugu
Description	Nakamura N., Nakashima S., Ogi H.. Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass. Scientific Reports 9, 12836 (2019); https://doi.org/10.1038/s41598-019-49120-1.
Abstract	Crystallization from amorphous solids is generally caused by activating phonons in a wide frequency range during heat treatment. In contrast, the activation of phonons in a narrow frequency range using ultrasonic treatment also causes crystallization below the glass transition temperature. These behaviors indicate that crystallization is related to the atomic motion in the glass state, and it is suggested that the activation of specific atomic motion can cause crystallization without increasing temperature. In this study, we observe nucleation and nuclei growth caused by mechanical oscillation in a hard-sphere colloidal glass and evaluate the effect of mechanical oscillation on the structural evolution in the early stage of the crystallization. Oscillation between 5 and 100 Hz is applied to the colloidal glass, and it is observed that the nucleation rate increases under the 70 Hz oscillation, resulting in formation of stable nuclei in a short amount of time. The nuclei growth is also accelerated by the 70 Hz oscillation, whereas increases in the nucleation rate and nuclei growth were not observed at other frequencies. Finally, activation of the diffusion-based rattling of particles by caging is considered as a possible mechanism of the observations.
Publisher	Nature Research
Source Title	Scientific Reports
Volume (Issue)	9
Page	12836
Date of Issued	2019-09-06
Language	English
Handle URL	https://hdl.handle.net/11094/93357
eISSN	20452322
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1038/s41598-019-49120-1
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Scientific Reports. 2019, 9, p. 12836
DC.title	Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass
DC.creator	Nakamura, Nobutomo
	Nakashima, Shizuka
	Ogi, Hirotsugu
DC.publisher	Nature Research
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2019-09-06
DC.identifier	https://doi.org/10.1038/s41598-019-49120-1
DC.description	Nakamura N., Nakashima S., Ogi H.. Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass. Scientific Reports 9, 12836 (2019); https://doi.org/10.1038/s41598-019-49120-1.
DCTERMS.abstract	Crystallization from amorphous solids is generally caused by activating phonons in a wide frequency range during heat treatment. In contrast, the activation of phonons in a narrow frequency range using ultrasonic treatment also causes crystallization below the glass transition temperature. These behaviors indicate that crystallization is related to the atomic motion in the glass state, and it is suggested that the activation of specific atomic motion can cause crystallization without increasing temperature. In this study, we observe nucleation and nuclei growth caused by mechanical oscillation in a hard-sphere colloidal glass and evaluate the effect of mechanical oscillation on the structural evolution in the early stage of the crystallization. Oscillation between 5 and 100 Hz is applied to the colloidal glass, and it is observed that the nucleation rate increases under the 70 Hz oscillation, resulting in formation of stable nuclei in a short amount of time. The nuclei growth is also accelerated by the 70 Hz oscillation, whereas increases in the nucleation rate and nuclei growth were not observed at other frequencies. Finally, activation of the diffusion-based rattling of particles by caging is considered as a possible mechanism of the observations.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	93357
citation_title	Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass
citation_author	Nakamura, Nobutomo
	Nakashima, Shizuka
	Ogi, Hirotsugu
citation_publisher	Nature Research
citation_language	English
citation_date	2019-09-06
citation_journal_title	Scientific Reports
citation_volume	9
citation_firstpage	12836
citation_doi	https://doi.org/10.1038/s41598-019-49120-1
citation_public_url	https://hdl.handle.net/11094/93357

Mechanical oscillation accelerating nucleation and nuclei growth in hard-sphere colloidal glass

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