Nanosecond laser ablation of gold nanoparticle films

Seung H. Ko, Yeonho Choi, David J. Hwang, Costas P. Grigoropoulos, Jaewon Chung, Dimos Poulikakos

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Ablation of self-assembled monolayer protected gold nanoparticle films on polyimide was explored using a nanosecond laser. When the nanoparticle film was ablated and subsequently thermally sintered to a continuous film, the elevated rim structure by the expulsion of molten pool could be avoided and the ablation threshold fluence was reduced to a value at least ten times lower than the reported threshold for the gold film. This could be explained by the unusual properties of nanoparticle film such as low melting temperature, weak bonding between nanoparticles, efficient laser energy deposition, and reduced heat loss. Finally, submicron lines were demonstrated.

Original languageEnglish
Article number141126
JournalApplied Physics Letters
Volume89
Issue number14
DOIs
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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