The importance of real space imaging and spatially-resolved spectroscopy
in many of the most significant problems of surface and interface
behaviour is almost self evident. To join the expertise of the tradi
tional surface scientist with that of the electron microscopist has
however been a slow and difficult process. In the past few years
remarkable progress has been achieved, including the development of new
techniques of scanning transmission and reflection imaging as well as
low energy microscopy, all carried out in greatly improved vacuum
conditions. Most astonishing of all has been the advent of the scanning
tunneling electron microscope providing atomic resolution in a manner
readily compatible with most surface science diagnostic procedures. The
problem of beam damage, though often serious, is increasingly well
understood so that we can assess the reliability and usefulness of the
results which can now be obtained in catalysis studies and a wide range
of surface science applications. These new developments and many others
in more established surface techniques are all described in this book,
based on lectures given at a NATO Advanced Study Institute held in
Erice, Sicily, at Easter 1987. It is regretted that a few lectures on
low energy electron diffraction and channeling effects could not be
included. Fifteen lecturers from seven different Countries and 67
students from 23 Countries and a wide variety of backgrounds attended
the school.