%0 Journal Article %T Direct Observation of Phase Separation in LB Film Composed of Polyamic Acid Long Alkyl Amine Salts by Using Friction Force Microscope (FFM) %A Yuba, Tomoyuki %A Kakimoto, Masa-aki %A Imai, Yoshio %A Shigeno, Masatsugu %J Chemistry Letters %V 22 %N 9 %P 1635-1636 %@ 0366-7022 %D 2006-04-28 %I Oxford University Press %~ DeepDyve