Thursday 13 February 2014

Gold and Silica Nanostars Imitate the Two Faces of the God Janus

Researchers from the Basque centre CIC biomaGUNE and the University of Antwerp (Belgium) have designed nanoparticles with one half formed of gold branches and the other of silicon oxide. 

They are a kind of Janus particle, so-called in honour of the Roman god with two faces, which could be used in phototherapy in the future to treat tumours.

In Roman mythology, Janus was the god of gates, doors, beginnings and transitions between the past and the future. In fact, the first month of the year, January (from the Latin, ianuarĭus), bears his name. 

This deity was characterised by his profile of two faces, something which has inspired scientists, when naming their chemical designs with two clearly distinct components.


Two examples of nanostars with one silicon oxide face (bluish) and another with golden branches (yellow). / Credit: Liz-Marzán et al.

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