Fluctuation of Time-Resolved X-ray Diffraction Reveals the Rotational Dynamics of Nanoparticles in Polymer Materials

Arai, Tatsuya; Kuramochi, Masahiro; Mio, Kazuhiro; Sekiguchi, Hiroshi; Tsuda, Sakae; Sasaki, Daisuke; Aizawa, Tomoyasu; Sasaki, Yuji C.

Fluctuation of Time-Resolved X-ray Diffraction Reveals the Rotational Dynamics of Nanoparticles in Polymer Materials

Arai, Tatsuya; Kuramochi, Masahiro; Mio, Kazuhiro et al.

Nano letters, 2025, 25(38), 14156-14165

Permalink : https://hdl.handle.net/2115/98113

このアイテムのアクセス数:19件（2026-10-17 13:02 集計）

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論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/98113
タイトル	Fluctuation of Time-Resolved X-ray Diffraction Reveals the Rotational Dynamics of Nanoparticles in Polymer Materials
著者	Arai, Tatsuya ; Kuramochi, Masahiro ; Mio, Kazuhiro ; Sekiguchi, Hiroshi ; Tsuda, Sakae ; Sasaki, Daisuke ; Aizawa, Tomoyasu ; Sasaki, Yuji C.
著者名 Arai, Tatsuya
著者名 Kuramochi, Masahiro
著者名 Mio, Kazuhiro
著者名 Sekiguchi, Hiroshi
e-Rad_Researcher 70211381 著者名 Tsuda, Sakae
著者名 Sasaki, Daisuke
e-Rad_Researcher 40333596 著者名 Aizawa, Tomoyasu
著者名 Sasaki, Yuji C.
言語	英語
キーワード	X-ray diffraction
	diffracted X-ray blinking
	nanoparticle
	polymer nanocomposite
発行日	2025-09-24
出版者	American Chemical Society
収録物名	Nano letters
巻(号)	25(38)
ページ	14156-14165
抄録	Polymer nanocomposites, consisting of a polymer matrix and nanoparticles, are key materials in modern soft matter science. Because their macroscopic properties are closely linked to nanoscale dynamics, developing techniques to observe nanoparticle motion is essential. Here, we present novel methods to analyze the rotational dynamics of crystalline nanoparticles in various polymers using conventional time-resolved X-ray diffraction (TR-XRD). In the first approach, diffraction intensity fluctuations caused by nanoparticle rotation were analyzed via autocorrelation functions to extract relaxation times, defined as the duration for a diffraction spot to traverse a single pixel of the detector. The relaxation times varied significantly depending on the material's rigidity and temperature. Second, two-time correlation analysis applied to TR-XRD data revealed time-dependent changes in nanoparticle dynamics during polymer phase transitions. These methods expand the utility of TR-XRD beyond structural analysis, offering a powerful tool to probe nanoscale rotational motion across a wide range of materials from liquids to solids.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This document is the Accepted Manuscript version of a Published Work that appeared in final form in　Nano letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/articlesonrequest/AOR-9CGGMK3UYHRBNGYQIEUW　Articles on Request author-directed link.
PISSN	1530-6984
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1021/acs.nanolett.5c03840