Gas Phase Synthesis of Nanopowders.

The aim of gas phase synthesis is to achieve the condensation of nanopowders with maximal specific surface area (see below for the definition), or in other words, to obtain nanoparticles that are not connected by strong chemical bonds (intergrain regions called grain boundaries; see, for example, the discussion of mechanical grinding in Chap. 19). When the contact region is partial, it is called a neck or bridge, a term taken from the field of sintering (see Chap. 21). [ABSTRACT FROM AUTHOR]