摘要
Micro-deposition of an aluminum film of 500-nm thickness on a quartz substrate was demonstrated by laser-induced forward transfer （LIFT） using a femtosecond laser pulse. With the help of atomic force microscopy （AFM） and scanning electron microscopy （SEM）, the dependence of the morphology of deposited aluminum film on the irradiated laser pulse energy was investigated. As the laser fluence was slightly above the threshold fluence, the higher pressure of plasma for the thicker film made the free surface of solid phase burst out, which resulted in that not only the solid material was sputtered but also the deposited film in the liquid state was made irregularly.
Micro-deposition of an aluminum film of 500-nm thickness on a quartz substrate was demonstrated by laser-induced forward transfer （LIFT） using a femtosecond laser pulse. With the help of atomic force microscopy （AFM） and scanning electron microscopy （SEM）, the dependence of the morphology of deposited aluminum film on the irradiated laser pulse energy was investigated. As the laser fluence was slightly above the threshold fluence, the higher pressure of plasma for the thicker film made the free surface of solid phase burst out, which resulted in that not only the solid material was sputtered but also the deposited film in the liquid state was made irregularly.
基金
This work was supported by the Key Grant Project of the Ministry of Education of China (No. 10410)
the Science and Technology Development Project Fund of Tianjin (No. 043103911)
the Science Research Start-Up Fund of Civil Aviation University (No. qd02x11).
