http://neurogadget.net/2013/07/18/intelligent-neural-dust-embedded-in-the-brain-could-be-the-ultimate-brain-computer-interface/8428
http://news.berkeley.edu/2016/08/03/sprinkling-of-neural-dust-opens-door-to-electroceuticals/
https://swarmlab.eecs.berkeley.edu/projects/4887/neural-dust-ultrasonic-low-power-solution-chronic-brain-machine-interfaces
http://cs.brown.edu/people/tld/note/blog/13/07/26/