On the behavior of Ag nanowires under high temperature: In situ characterization by aberration-corrected STEM

Alvaro Mayoral, Lawrence F. Allard, Domingo Ferrer, Rodrigo Esparza, Miguel Jose-Yacaman

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

Single crystal nanowires have been monitored at a wide range of temperatures from room temperature up to 900°C using an aberration-corrected JEOL 2200FS scanning transmission electron microscope in both, bright field and high angle annular dark field, modes. The in situ measurements allowed heating and cooling the material instantaneously at the desired value making able to analyze the behaviour of silver nanowires at atomic resolution. The nanowires which firstly melted and subsequently vaporized left after the reaction empty carbon nanotubes. In addition, a Chevron-like defect has been also observed for the first time in silver nanowires and a structural analysis has been carried out by aberration corrected scanning transmission electron microscopy using high angle annular dark field imaging.

Original languageEnglish (US)
Pages (from-to)893-898
Number of pages6
JournalJournal of Materials Chemistry
Volume21
Issue number3
DOIs
StatePublished - Jan 21 2011
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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