Scientist John Hart created a remix of Shepard Fairey's Obama poster from 150 million carbon nanotubes, each of which measured tens of thousands of times smaller than a human hair. That sure is a lot of tiny Obamas. Snip:

Even then, the finished product is only half a millimetre in diameter and almost indistinguishable from any other garden variety micro dot – unless you happen to be looking at it through a microscope.

The magnification reveals tiny, three dimensional "carvings" of the now ubiquitous polarised image of the president-elect originally created by street artist and graphic designer Shepard Fairey.

The "Nanobamas" were created by a team of researchers led by Hart, an assistant professor in the Department of Mechanical Engineering at the University of Michigan.

Obama under the microscope, and here is Hart's site at the University of Michigan Mechanosynthesis Group (Thanks, @mpesce)