Image contrast and visibility of supported small metal catalyst particles in HRTEM

2 Image contrast and visibility of supported small metal catalyst particles in HRTEM 

Although HRTEM is a very powerful technique for the study of small particles, imaging metal-particle catalysts on supports such as alumina, silica or carbon presents challenges. In order to understand the structure and contrast of very small ( 5 nm) supported metal particles which are thought to be the active species in catalysis, key computations of supported small metallic catalysts have been reported by Gai et al (1986). Image computations for supported particles, carried 

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