"The Flick of a switch: A wall becomes a window becomes a hologram generator. Any chair becomes a hypercomputer, any rooftop a power or waste treatment plant..."
A multimedia editon of Wil McCarthy's HACKING MATTER: Levitating Chairs, Quantum Mirages, and the Infinite Weirdness of Programmable Atoms book has been released as a free pdf. It deals with "programmable matter" (currently: colloidal films, bulk crystals, and quantum dots) that can mimic the properties of any natural atom. (See McCarthy's FAQ: Quantum Dots and Programmable Matter.)