Abstract
In order to design and utilize organic and polymer compounds as new functional materials for electronics and photonics, it is important to characterize and control molecular orientations at the molecular level. Among the techniques for imaging molecular structures, high resolution transmission electron microscopy (HRTEM) is one of the most powerful tools. Nowadays, the spatial resolution can discriminate at the atomic level and so enable us to obtain good pictures [1–4]. In addition to high resolution observation, transmission electron microscopy (TEM), as an anaytical tool at the atomic level, can reveal information about the crystal structure from diffraction patterns and the elemental distributions from energy dispersive X-ray spectroscopy (EDS) and electron energy loss spectroscopy (EELS) [4–7]. Figure 17.1 shows the interaction between the thin film specimen and the high energy electrons.
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