A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO

Oguri, Hiroto; Li, Yan; Nakamura, Atsutomo

doi:https://doi.org/10.1111/jace.20338

A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO

Oguri, Hiroto; Li, Yan; Nakamura, Atsutomo

Journal of the American Ceramic Society, 2024, e20338

アクセス数:426件（2025-07-31 23:34 集計）

固定URL: https://hdl.handle.net/11094/100344

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タイトル	A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO
著者	著者名 Oguri, Hiroto
	NRID 1000070930171 1000070930171 ORCID 0000-0002-9274-2516 0000-0002-9274-2516 researchmap permalink liyan-osaka_univ liyan-osaka_univ 著者名 Li, Yan
	NRID 1000020419675 1000020419675 ORCID 0000-0002-4324-1512 0000-0002-4324-1512 researchmap permalink read0210196 read0210196 Scopus Author ID 56421164400 56421164400 著者名 Nakamura, Atsutomo
キーワード等	compound semiconductors
	nanoindentation
	oxides
	plasticity
	wurtzite
内容	Oguri H., Li Y., Nakamura A. A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO. Journal of the American Ceramic Society , (2024); https://doi.org/10.1111/jace.20338.
抄録	The nanoindentation method is a widely utilized approach for characterizing the mechanical properties of materials at the nanoscale. In typical nanoindentation tests, the mechanical responses of materials are monitored while maintaining constant environmental factors, such as lighting and temperature, in order to ensure the reliability of the results. Here, we propose a testing method that switches the light conditions during a single nanoindentation creep test to detect slight changes in the mechanical response due to weak light illumination. To achieve this, a reference sample of fused silica was employed, which is insensitive to light, in order to compensate for the thermal expansion/contraction of approximately 1 nm due to the light environment. The calibrated results revealed the instantaneous suppressive influence of light illumination on the indentation creep behavior of ZnO. It was found that upon initiating illumination, the indentation creep rate decreased by 45%, whereas terminating illumination led to a dramatic 19.4-fold increase in the creep rate. The effective testing pattern involving a “light switch” enables quantitatively visualizing the light illumination effects through the instant “jump” in the creep strain rate within a single test, facilitating the detection of minor and instantaneous effects of light environments on indentation creep behavior.
出版者	John Wiley and Sons Inc
収録物名	Journal of the American Ceramic Society
ページ	e20338
刊行年月	2024-12-26
言語	英語
ハンドルURL	https://hdl.handle.net/11094/100344
PISSN	00027820
eISSN	15512916
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1111/jace.20338
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCTERMS.bibliographicCitation	Journal of the American Ceramic Society. 2024, p. e20338
DC.title	A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO
DC.creator	Oguri, Hiroto
	Li, Yan
	Nakamura, Atsutomo
DC.publisher	John Wiley and Sons Inc
DC.language' scheme='DCTERMS.RFC1766	英語
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-12-26
DC.identifier	https://doi.org/10.1111/jace.20338
DC.subject	compound semiconductors
	nanoindentation
	oxides
	plasticity
	wurtzite
DC.description	Oguri H., Li Y., Nakamura A. A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO. Journal of the American Ceramic Society , (2024); https://doi.org/10.1111/jace.20338.
DCTERMS.abstract	The nanoindentation method is a widely utilized approach for characterizing the mechanical properties of materials at the nanoscale. In typical nanoindentation tests, the mechanical responses of materials are monitored while maintaining constant environmental factors, such as lighting and temperature, in order to ensure the reliability of the results. Here, we propose a testing method that switches the light conditions during a single nanoindentation creep test to detect slight changes in the mechanical response due to weak light illumination. To achieve this, a reference sample of fused silica was employed, which is insensitive to light, in order to compensate for the thermal expansion/contraction of approximately 1 nm due to the light environment. The calibrated results revealed the instantaneous suppressive influence of light illumination on the indentation creep behavior of ZnO. It was found that upon initiating illumination, the indentation creep rate decreased by 45%, whereas terminating illumination led to a dramatic 19.4-fold increase in the creep rate. The effective testing pattern involving a “light switch” enables quantitatively visualizing the light illumination effects through the instant “jump” in the creep strain rate within a single test, facilitating the detection of minor and instantaneous effects of light environments on indentation creep behavior.
DC.rights	This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
DC.format	100344
citation_title	A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO
citation_author	Oguri, Hiroto
	Li, Yan
	Nakamura, Atsutomo
citation_publisher	John Wiley and Sons Inc
citation_language	英語
citation_date	2024-12-26
citation_journal_title	Journal of the American Ceramic Society
citation_firstpage	e20338
citation_doi	https://doi.org/10.1111/jace.20338
citation_public_url	https://hdl.handle.net/11094/100344

A nanoindentation approach for unveiling the photoplastic effects by a “light switch”: A case study on ZnO

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