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Switching the fracture toughness of single-crystal ZnS using light irradiation

Zhu, Tingting ; Ding, Kuan ; Oshima, Yu ; Amiri, Anahid ; Bruder, Enrico ; Stark, Robert W. ; Durst, Karsten ; Matsunaga, Katsuyuki ; Nakamura, Atsutomo ; Fang, Xufei (2024)
Switching the fracture toughness of single-crystal ZnS using light irradiation.
In: Applied Physics Letters, 2021, 118 (15)
doi: 10.26083/tuprints-00026602
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Item Type: Article
Type of entry: Secondary publication
Title: Switching the fracture toughness of single-crystal ZnS using light irradiation
Language: English
Date: 10 September 2024
Place of Publication: Darmstadt
Year of primary publication: 2021
Place of primary publication: Melville, NY
Publisher: AIP Publishing
Journal or Publication Title: Applied Physics Letters
Volume of the journal: 118
Issue Number: 15
Collation: 5 Seiten
DOI: 10.26083/tuprints-00026602
Corresponding Links:
Origin: Secondary publication service
Abstract:

An enormous change in the dislocation-mediated plasticity has been found in a bulk semiconductor that exhibits the photoplastic effect. Herein, we report that UV (365 nm) light irradiation during mechanical testing dramatically decreases the fracture toughness of ZnS. The crack tip toughness on a (001) single-crystal ZnS, as measured by the near-tip crack opening displacement method, is increased by ∼45% in complete darkness compared to that in UV light. The increase in fracture toughness is attributed to a significant increase in the dislocation mobility in darkness, as explained by the crack tip dislocation shielding model. Our finding suggests a route toward controlling the fracture toughness of photoplastic semiconductors by tuning the light irradiation.

Identification Number: Artikel-ID: 154103
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-266022
Classification DDC: 500 Science and mathematics > 530 Physics
500 Science and mathematics > 540 Chemistry
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
11 Department of Materials and Earth Sciences > Material Science > Physics of Surfaces
Date Deposited: 10 Sep 2024 08:04
Last Modified: 10 Sep 2024 08:04
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/26602
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