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Using Amorphous CoB Alloy as Transducer to Detect Acoustic Propagation and Heat Transport at Interface

DC Field Value Language
dc.contributor.authorJian, Liu-
dc.contributor.authorGyung-Min Choi-
dc.date.accessioned2021-07-12T05:30:15Z-
dc.date.accessioned2021-07-12T05:30:15Z-
dc.date.available2021-07-12T05:30:15Z-
dc.date.available2021-07-12T05:30:15Z-
dc.date.created2021-07-07-
dc.date.issued2021-06-
dc.identifier.issn2076-3417-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/9919-
dc.description.abstract© 2021 by the authors. Licensee MDPI, Basel, Switzerland. Featured Application The use of an amorphous CoB alloy for the transducer layer to measure the acoustic and thermal properties of the soft layer. Acoustic oscillation provides useful information regarding the interfacial coupling between metal transducer layers and substrate materials. The interfacial coupling can be significantly reduced by a mechanically soft layer between the transducer and substrate. However, preserving a thin, soft layer at the interface during fabrication is often challenging. In this study, we demonstrate that an amorphous CoB alloy on top of a sapphire substrate can substantially amplify acoustic oscillations. By analyzing the attenuation of acoustic oscillations, we show that a thin, soft layer with a thickness of >2 +/- 1 angstrom exists at the interface. The intermediate layer at the interface is further verified by investigating heat transport. By analyzing the slow decrease of the temperature of the transducer layer, we determine a thermal conductance of 35 +/- 5 MW m(-2) K-1 at the transducer/substrate interface. This low value supports the existence of a thin, soft layer at the interface. Our results demonstrate that an amorphous metal with B alloying effectively preserves the soft nature at the interface and detects the acoustic propagation and heat transport across it.-
dc.description.uri1-
dc.language영어-
dc.publisherMDPI-
dc.titleUsing Amorphous CoB Alloy as Transducer to Detect Acoustic Propagation and Heat Transport at Interface-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000659579700001-
dc.identifier.scopusid2-s2.0-85107963874-
dc.identifier.rimsid75915-
dc.contributor.affiliatedAuthorGyung-Min Choi-
dc.identifier.doi10.3390/app11115155-
dc.identifier.bibliographicCitationAPPLIED SCIENCES-BASEL, v.11, no.11-
dc.citation.titleAPPLIED SCIENCES-BASEL-
dc.citation.volume11-
dc.citation.number11-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryEngineering, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryPhysics, Applied-
dc.subject.keywordPlusPHONON ATTENUATION-
dc.subject.keywordPlusPICOSECOND-
dc.subject.keywordPlusVELOCITY-
dc.subject.keywordPlusCONDUCTIVITY-
dc.subject.keywordPlusCONDUCTANCE-
dc.subject.keywordPlusELECTRON-
dc.subject.keywordPlusSOLIDS-
dc.subject.keywordPlusFLOW-
dc.subject.keywordAuthoracoustic wave-
dc.subject.keywordAuthorpicosecond acoustics-
dc.subject.keywordAuthorinterfacial layer-
dc.subject.keywordAuthorthermal conductance-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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