A review of the present status of the problem of metal deposition and elect
rochemical phase formation and growth is made. The historical background of
the problem is given with an overview of the major contributions of differ
ent electrochemical schools. Phase formation is treated in classical and at
omistic terms. Some of the basic consequences of the theory concerning the
equilibrium form, the influence of the substrate, the size-overpotential de
pendence of low-dimensional systems, and the nucleation kinetics are discus
sed. The basic modes of crystal growth under electrochemical conditions are
described, The influence of substrate surface modification in the UPD regi
on concerning the formation of low dimensional phases and their stability r
anges are discussed. The development of recent in situ techniques for nanos
tructuring and nanomodification of solid surfaces and their importance for
electrochemical nanotechnologies are also shortly presented. (C) 2000 Elsev
ier Science Ltd. All rights reserved.