© 2015 Cardiff Scientific Society

Nanomaterials have at least one dimension less than one thousandth of a millimetre, many are much smaller. At this scale novel electronic and chemical properties develop; inert gold for example becomes chemically active. Because of their small size most of the atoms in a nanoparticle are at the surface and it is the properties of the surface that dominate much of a nanoparticle’s behaviour. New techniques allow us to study individual molecules at the surface during a reaction and thus shed light on the structure and reactivity of these revolutionary materials. The talk will highlight some of the novel properties of nanoparticles and look at future developments with illustrations from our own work and that of others in the area.

7 January 2009 Large Chemistry Lecture Theatre, Cardiff University

Nanotechnology: from Small Beginnings Come Great Things

Dr Philip R. Davies PhD CChem
School of Chemistry, Cardiff University

30.2 nm

An STM image of islands of oxygen atoms on a copper surface. Dark lines are atomic steps in the copper surface

Drawing of the known structure of oxygen islands on a copper surface. Red spheres are oxygen, lighter bronze spheres are copper atoms that are known to be incorporated into the islands.