We are writing a paper about it now. It is a mixture of two surfactants (cetyltrimethylammonium bromide and sodium dodecyl sulfate) with gold chloride, which is then reduced with ascorbic acid.
@@user-nm5tn7td5b This isn't a way to make a useful amount of gold in miligrams. We put in the gold as a gold salt which only contains microscopic amounts, and per gram I'm sure consts more than metallic gold.