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(Color online) (a) Schematic diagram of confined nanosecond pulsed laser irradiation. (b) Nanoparticles morphology of a 30 nm thick Au thin film after a laser pulse irradiation with the fluence ∼400 mJ/cm2. The inset is power spectrum of the SEM picture.
The morphology evolution of a 30 nm thick Au thin film irradiated by a laser pulse with different laser fluence. (a) 0 mJ/cm2, (b) ∼25 mJ/cm2, (c) ∼300 mJ/cm2, (d) ∼400 mJ/cm2.
The size histograms of Au nanoparticles under different laser fluence. (a) ∼25 mJ/cm2, (b) ∼300 mJ/cm2, (c) ∼400 mJ/cm2.
Light absorption efficiency (hollow dots) and light heating efficiency (solid dots) as a function of Au nanoparticle diameter.
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