Control of ultrafast laser ablation efficiency by stress confinement due to strong electron localization in high-entropy alloys
dc.contributor.author | Redka, David | |
dc.contributor.author | Winter, Jan | |
dc.contributor.author | Gadelmeier, Christian | |
dc.contributor.author | Djuranovic, Alexander | |
dc.contributor.author | Glatzel, Uwe | |
dc.contributor.author | Minár, Jan | |
dc.contributor.author | Huber, Heinz Paul | |
dc.date.accessioned | 2023-02-06T11:00:24Z | |
dc.date.available | 2023-02-06T11:00:24Z | |
dc.date.issued | 2022 | |
dc.description.abstract | In the context of current state of the art, understanding the laser ablation efficiency decrease for pulse durations High-entropy alloy; CrMnFeCoNi; Ultrafast laser ablation; Pulse duration; Ablation efficiency; Stress confinementexceeding the mechanical relaxation time of a few ps remains a pending research question. A heuristic approach may be used to reveal the role of effective penetration depth on ablation efficiency. Extending familiar contributions of this quantity by a term related to the mechanical surface expansion during pulse irradiation, the relation of ablation efficiency and pulse duration is deciphered. Thus, longer pulses are coupled into an expanded surface, revealing a direct link to the violation of stress confinement. To best demonstrate this hypothesis, a material with high electron–phonon coupling as well as low thermal conductivity, i.e., strong electron localization, is required. These properties are accomplished by high-entropy alloys, and the CrMnFeCoNi alloy serves as prime candidate. We report on single-pulse ablation efficiency experiments of the CrMnFeCoNi alloy which are support by our proposed model. | de |
dc.description.abstract-translated | In the context of current state of the art, understanding the laser ablation efficiency decrease for pulse durations High-entropy alloy; CrMnFeCoNi; Ultrafast laser ablation; Pulse duration; Ablation efficiency; Stress confinementexceeding the mechanical relaxation time of a few ps remains a pending research question. A heuristic approach may be used to reveal the role of effective penetration depth on ablation efficiency. Extending familiar contributions of this quantity by a term related to the mechanical surface expansion during pulse irradiation, the relation of ablation efficiency and pulse duration is deciphered. Thus, longer pulses are coupled into an expanded surface, revealing a direct link to the violation of stress confinement. To best demonstrate this hypothesis, a material with high electron–phonon coupling as well as low thermal conductivity, i.e., strong electron localization, is required. These properties are accomplished by high-entropy alloys, and the CrMnFeCoNi alloy serves as prime candidate. We report on single-pulse ablation efficiency experiments of the CrMnFeCoNi alloy which are support by our proposed model. | en |
dc.format | 8 s. | cs |
dc.format.mimetype | application/pdf | |
dc.identifier.citation | REDKA, D. WINTER, J. GADELMEIER, CH. DJURANOVIC, A. GLATZEL, U. MINÁR, J. HUBER, HP. Control of ultrafast laser ablation efficiency by stress confinement due to strong electron localization in high-entropy alloys. APPLIED SURFACE SCIENCE, 2022, roč. 594, č. AUG 30 2022, s. nestránkováno. ISSN: 0169-4332 | cs |
dc.identifier.document-number | 802562700004 | |
dc.identifier.doi | 10.1016/j.apsusc.2022.153427 | |
dc.identifier.issn | 0169-4332 | |
dc.identifier.obd | 43938295 | |
dc.identifier.uri | 2-s2.0-85129032983 | |
dc.identifier.uri | http://hdl.handle.net/11025/51338 | |
dc.language.iso | en | en |
dc.project.ID | SGS-2021-030/Vývoj nových materiálů, aplikace moderních metod jejich zpracování, ekologické výroby, svařování a testování. | cs |
dc.project.ID | EF15_003/0000358/Výpočetní a experimentální design pokročilých materiálů s novými funkcionalitami | cs |
dc.publisher | Elsevier | en |
dc.relation.ispartofseries | Applied Surface Science | en |
dc.rights | © authors | en |
dc.rights.access | openAccess | en |
dc.subject.translated | High-entropy alloy | en |
dc.subject.translated | CrMnFeCoNi | en |
dc.subject.translated | Ultrafast laser ablation | en |
dc.subject.translated | Pulse duration | en |
dc.subject.translated | Ablation efficiency | en |
dc.subject.translated | Stress confinement | en |
dc.title | Control of ultrafast laser ablation efficiency by stress confinement due to strong electron localization in high-entropy alloys | en |
dc.type | článek | cs |
dc.type | article | en |
dc.type.status | Peer-reviewed | en |
dc.type.version | publishedVersion | en |
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