Medium Effect on the Electron Cooling Dynamics in Gold Nanorods and Truncated Tetrahedra

A study on the electron relaxation dynamics and thermal cooling of colloidal gold nanoparticles (see Figure) in air and water finds that the local energy exchange with the surrounding medium occurs on the picosecond time scale, comparable with the electron–phonon relaxation, while a slow heat dissip...

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Bibliographic Details
Published inAdvanced materials (Weinheim) Vol. 15; no. 5; pp. 393 - 396
Main Authors Link, S., Hathcock, D.J., Nikoobakht, B., El-Sayed, M.A.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 04.03.2003
WILEY‐VCH Verlag
Subjects
Energy transfer
Gold
Media-dependent properties
Nanorods
Nanorods, gold
Relaxation dynamics
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Summary:A study on the electron relaxation dynamics and thermal cooling of colloidal gold nanoparticles (see Figure) in air and water finds that the local energy exchange with the surrounding medium occurs on the picosecond time scale, comparable with the electron–phonon relaxation, while a slow heat dissipation by water ensures that the particles remain heated for hundreds of picoseconds.
Bibliography:ark:/67375/WNG-0NKPMTNQ-G
We thank Lynn Peyser for help with the AFM characterization. This work was supported by the Materials Research Division of the National Science Foundation (grant # 0138391).
ArticleID:ADMA200390088
istex:5C206709080149A3513AA2EDD2BC777DB240577B
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200390088