High Resolution Electron Energy‐Loss Spectroscopy

摘要: The determination of the identity and structure molecular species present in no more than monolayer quantities at solid surfaces is one difficult tasks interfacial science. In this regard, vibrational spectroscopy an invaluable technique; evaluation integrity surface-bound compounds, it has few equals. Optical methods such as infrared spectroscopy, while rather uncomplicated for bulk materials, lack high sensitivity needed most surface due to minuscule amounts. A much responsive alternative based on use low-energy electrons interact with oscillators surface. If inelastic interactions occur, energy backscattered will be lower that incident electrons, loss correspond a vibrational-mode frequency. article briefly describes fundamental principles instrumental considerations high-resolution electron energy-loss (HREELS), cites seminal applications study adsorption organic inorganic molecules metal semiconductor surfaces. limited list HREELS work published since turn century added last section. Keywords: high-resolution spectroscopy; surface spectroscopy; dipole scattering; impact scattering; physisorption; chemisorption; surface coordination chemistry; surface organometallic chemistry