OK oil is dead, solar panels can do it...
Discussion
marshalla said:
"organic inks" - where do they get the organic compounds from ?
In the most part...oil!However
Inks, usually being coloured, rely on a chromophore which is usually some sort of highly unsaturated / electron-rich carbon chain (think alternating alkane / alkene bonds). Nature is very VERY good at doing this, since they are created through various biosynthetic pathways (malevonate, isoprene, that sort of thing). So we could turn to plants / fruits / vegetables for a chemical feedstock from which to further synthesise required compounds from.
An example compound is lycopene (http://en.wikipedia.org/wiki/Lycopene) from tomatoes.
The thing with these sorts of compounds though is their stability. Electron-rich, to me, indicates a high predisposiation to oxidation and therefore degredation. Might not be as toxic though (take a pinch of salt with that statement) and are potentially more environmentally friendly compared to metal-based, inorganic / organometallic pigments (no metals being put into the waste streams...)
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