Correction to: NPG Asia Materials (2014) 6, e122; doi:10.1038/am.2014.65; published online 5 September 2014

The ā€˜eā€™ number was incorrect in the PDF version. It should be e122 instead of e00.

The correct citation to this article should be read as below:

NPG Asia Materials (2014) 6, e122; doi:10.1038/am.2014.65; published online 5 September 2014

The publisher would like to apologize for any inconvenience this may have caused.