Micro-machined Cochlea

Scientists at the University of Michigan (U-M) have developed the first
micro-machined, life-sized, mechanical cochlea, the tiny organ responsible
for converting acoustic vibrations into electrical signals for the brain to
"read" and interpret as different sounds.  

The three advantages of the mechanical cochlea are its life-sized dimensions,
its suitability for mass production, and its use of a unique low-power
mechanical method to do acoustic signal processing. Researchers
micro-machined the device using a technique similar to those used to make
integrated circuits.  

While the U-M system is not yet ready for use as an implant, the 3-centimeter
device could potentially be used as part of a cochlear implant. More
immediate applications include a low-power sensor for military or commercial
applications.  

Read the entire article at:
http://www.umich.edu/news/index.html?Releases/2005/Feb05/r020205b