In this paper, Langmuir-Blodgett (LB) films of mixed bovine serum albumin (
BSA)-phosphatidylcholine (PC) with different layers have been fabricated by
LB technique, With the analysis of ultraviolet (UV) spectroscopy, circular
dichroism (CD) spectroscopy and ellipsometer, the structural properties of
BSA-PC mixed LB biological films are studied.