LB(Langmuir-Blodgett)膜由转移漂浮在水面上的单分子层到固体基板上而制备。LB膜与其它膜相比,具有三个显著的特点:膜厚能薄至数十埃甚至数埃;能制备几乎没有缺陷的单分子层膜;高度的各向异性的层结构。这些特点预示着广泛的应用潜力:(1)光学元件的透明层;(2)绝缘层和隧道效应层;(3)电荷 The LB (Langmuir-Blodgett) film is prepared by transferring a monolayer floating on the water onto a solid substrate. LB films have three salient features compared to other films: film thickness can be as thin as tens to hundreds or even several angstroms; monolayer films can be prepared with almost no defects; and highly anisotropic layer structures. These characteristics are indicative of a wide range of potential applications: (1) transparent layers of optical components; (2) insulating and tunneling layers; (3) electrical charges