Those who know me, have had to spend the last decade listening to why printing is the next industrial revolution.
So much happens in this area, it's hard to keep up.
From printing in polymers to metals and from houses to printers
Anyway HP Labs it seems now have a nano-scale process for memory with a reported desnsity of 100Gb per square centimeter
For those interested, if you can attend the printed electronics conference, it's worth it.