2003 年 45 巻 5 号 p. 295-305
Our study of electron crystallography or convergent beam electron diffraction (CBED) and of electron spectroscopy or electron energy-loss spectroscopy (EELS), which were done from the time when we introduced the energy filtering technique until my retirement, is described together with the important results. Crystal structure refinement was successfully carried out by fitting the energy filtered CBED pattern with the theoretically calculated pattern. A case study of the determination of a charge density distribution is shown. A high energy-resolution EELS instrument (< 0.1 eV) was developed for the study of the electronic structure or the structure of the conduction band. A case study of a detailed band structure is shown with a theoretical calculation. A clean application to reveal the optical properties of fullerenes is shown. A recent development of the wavelength dispersive spectroscopy attachment is mentioned. A small reminiscence on my research life is given.