Nano materials

Nano materials are those with grain sizes in the range of few nanometers. Starting with nano carbon,scientist have produced and studied many nano materials. This new kind of materials are supposed to have several beneficial properties. But nobody is sure. Because it is difficult to produce nano metals,no comprehensive tests regarding strength, electrical and magnetic properties, etc have been conducted.
Material scientists and metallurgists have a tendency to jump from one fancy project to another so that they are in the "forefront" of research. In the 1980's it was metallic glass and now it is nano materials. There was lot of noice about the wonder of metallic glasses,but few years down the line everybody realised that they are barking the wrong tree as far as new materials are concerned. Are nano materials going the same way? Let us hope they turn out to be more real than metallic glasses. The penchant for proclaiming discovery of wonder metals,without any substantial experimental verification leads metallurgists to lose their face.