TEM image of Pt nanoparticles prepared by pulsed laser ablation in water. The inset shows the size distribution of the Pt nanoparticles.
SEM and STM images of Pt films deposited at He pressure varying from to 11 Torr.
XRD patterns of Pt films deposited at various He pressures.
Size of the Pt nanoparticle as a function of the He pressure in the deposition chamber. For PLD in He, the thickness of the films was 300 nm in all cases.
Variation in the Pt film density as a function of He pressure.
(a) Flight distance as a function of the TOF of the plasma front in vacuum and under 500 mTorr of He. (b) Velocity of the plasma front as a function of He pressure for different flight distances.
(a) Variation in the Pt film density and (b) of the size of the Pt nanoparticles as a function of the velocity of the Pt ablated species.
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