ANN ARBOR, Mich. (AP) - It may be the tiniest University of Michigan logo ever made, but it's more than just an effort to show "how small can you go."
Researchers at the Ann Arbor school's College of Engineering have replicated a 3-micron-thick, two-layered block "M" to test a system that they say could be used to deliver drugs at different times and rates or to different parts of the body.
The engineers say they've demonstrated new precision manufacturing methods capable of producing particles 10 or more layers thick.
The block M is 115-by-160-by 3 microns thick, or about the size of a grain of sand.
The university says commercial use of the particles for drug delivery could be a decade away.