Wouldn't combining aluminum oxide and copper make a rather volatile combination? Just add a little salt and you've got the makings of a battery. I'd think copper oxide on copper would be safer. Dunno; I'm still new to all this. For the aluminum oxide, I'd guess you melt the alumina and dip aluminum "plate" into it. One place to start looking for information on designing atomizers like these might be to search for "how to make your own vaporizers". The principles are similar even though the...substances...inhaled are worlds apart.
I'm, frankly, quite interested in the idea of building my own atomizer, with an eye toward designing and building my own e-cig from scratch. Specifically, I'm thinking about something like the kissbox, but different. A double switch, one to activate the atomizer (no chip or excess electronics that way for a reliable, possibly longer lasting design) and another to activate a liquid squirt bulb. If the atomizer core were sturdy enough, you could essentially design an e-cig that was intended to be dry smoked and wouldn't burn itself out.
I'm looking too; lemme know if you find anything