The effects of the FA/O surfactant with different volume fractions on the removal of SiO_2 particle contamination in the alkaline cleaner were mainly studied.The metallographic microscope test shows that the removal efficiency of the SiO_2 particle contamination increases at first and then decreases with the increase of FA/O surfactant volume fraction,and the removal efficiency of the SiO_2 particle contamination is the best when the volume fraction of the FA/O surfactant is 0.25%.The atomic force microscop...