{"title":"Sculpturing metal nanoparticles by controlled massive deformation","authors":"Jonathan Zimmerman, Eugen Rabkin","doi":"10.1016/j.scriptamat.2024.116248","DOIUrl":null,"url":null,"abstract":"<div><p>Controlling the shape and orientation of metal nanoparticles constitutes fundamental strategies employed to tune their distinctive properties. However, singular high-energy surfaces are notably missing from nanoparticles fabricated using existing synthesis techniques. In this work, we fabricated supported (111)-oriented Pt nanoparticles that expose low-energy surfaces and subsequently reshaped them using a metal forming technique. We found that the orientations of deformed particles span a continuum encompassing (111), (110) and (112) and observed a linear dependence of this re-orientation on the plastic strain. We proposed a model describing particle rotation during deformation in terms of synergistic interplay between slip and diffusion.</p></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scripta Materialia","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1359646224002835","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Controlling the shape and orientation of metal nanoparticles constitutes fundamental strategies employed to tune their distinctive properties. However, singular high-energy surfaces are notably missing from nanoparticles fabricated using existing synthesis techniques. In this work, we fabricated supported (111)-oriented Pt nanoparticles that expose low-energy surfaces and subsequently reshaped them using a metal forming technique. We found that the orientations of deformed particles span a continuum encompassing (111), (110) and (112) and observed a linear dependence of this re-orientation on the plastic strain. We proposed a model describing particle rotation during deformation in terms of synergistic interplay between slip and diffusion.
期刊介绍:
Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.