Femtosecond laser sintering of copper nanoparticles

Chung-Wei Cheng*, J. K. Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The ultrafast melting of copper nanoparticles (NPs) induced by a femtosecond laser pulse with duration of 100 fs and wavelength of 800 nm is investigated theoretically and experimentally. The Cu pattern fabricated from sintering of a Cu NP-dispersed film by the femtosecond laser at a repetition rate of 80 MHz is experimentally studied. A one-dimensional two-temperature model with temperature-dependent material properties, including the extended Drude model for dynamic optical properties and the thermophysical properties, is employed to simulate the particles ultrafast melting and re-solidification process.

Original languageEnglish
Article number289
JournalApplied Physics A: Materials Science and Processing
Volume122
Issue number4
DOIs
StatePublished - 1 Apr 2016

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