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Formation of hollow structures through diffusive phase transition across a membrane

TitleFormation of hollow structures through diffusive phase transition across a membrane
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2011
AuthorsPasquini, L., Montone Amelia, Callini E., Antisari M.V., and Bonetti E.
JournalApplied Physics Letters
Volume99
ISSN00036951
KeywordsControlled porosity, Core material, Core/shell nanoparticles, Coremaking, General approach, High temperature, Hollow shells, Hollow structure, Phase transitions
Abstract

We report on the formation of hollow structures driven by a phase transition that proceeds via diffusion through a membrane. The mechanism is demonstrated for Mg/MgO core/shell nanoparticles: When they undergo successive metal-hydride transitions at sufficiently high temperature, the core material progressively diffuses outward and evaporates, leaving a hollow shell with the original shape and thickness. This phenomenon might become a general approach to the design of materials with controlled porosity. © 2011 American Institute of Physics.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-79960542566&doi=10.1063%2f1.3610973&partnerID=40&md5=7c6487d01433964a165065910d0b5cf1
DOI10.1063/1.3610973
Citation KeyPasquini2011