文档介绍：Characterization of Nanophase Materials. Edited by Zhong Lin Wang
Copyright 2000 Wiley-VCH Verlag GmbH
ISBNs: 3-527-29837-1 )Hardcover); 3-527-60009-4 )Electronic)
Part I Technical Approaches
Characterization of Nanophase Materials. Edited by Zhong Lin Wang
Copyright 2000 Wiley-VCH Verlag GmbH
ISBNs: 3-527-29837-1 )Hardcover); 3-527-60009-4 )Electronic)
1 Nanomaterials for Nanoscience and
Nanotechnology
Zhong Lin Wang
Technology in the twenty first century requires the miniaturization of devices into
nanometer sizes while their ultimate performance is dramatically enhanced. This
raises many issues regarding to new materials for achieving specific functionality and
selectivity. Nanophase and nanostructured materials, a new branch of materials
research, are attracting a great deal of attention because of their potential applications
in areas such as electronics [1], optics [2], catalysis [3], ceramics [4], ic data
storage [5, 6], and posites. The unique properties and the improved perfor-
mances of nanomaterials are determined by their sizes, surface structures and inter-
particle interactions. The role played by particle size parable, in some cases, to
the particle position, adding another flexible parameter for designing
and controlling their behavior. To fully understand the impacts of nanomaterials in
nanoscience and nanotechnology and answer the question of why nanomaterials is so
special, this chapter reviews some of the unique properties of nanomaterials, aiming
at elucidating their distinct characteristics.
Why nanomaterials?
Nanomaterials are classified into nanostructured materials and nanophase/nano-
particle materials. The former refer to condensed bulk materials that are made of
grains with grain sizes in the nanometer size range, while the latter are usually the dis-
persive nanoparticles. The nanometer size here covers a wide range which can be as
large as 100±200 nm. To distinguish nanomaterials from bulk, it