Author/Authors :
D. Ding، نويسنده , , T. Kaambre، نويسنده , , S. Ljungstr?m، نويسنده , , Y. Chen، نويسنده , , L. Karlsson and K. Siegbahn، نويسنده , , E. Wistus، نويسنده , , P. Swensson، نويسنده , , E. Mukhtar، نويسنده ,
Abstract :
Surface second harmonic generation (SHG) has been utilized to obtain information such as orientation, concentration distribution and desorption of C17 indandione-1,3 pyridinium betaine (IPB) thin films prepared by the Langmuir-Blodgett (LB) technique on fused silica. Data for C17 IPB adsorbate distribution after irradiation by several pulses of 1064 nm laser at 8 × 108 W/cm2 are described using a laser induced thermal desorption model. The results indicate that SHG is a useful tool for the determination of the concentration profile of adsorbates on surfaces with a submonolayer level sensitivity.
