From Chemical & Engineering News:
A team led by Northwestern University chemistry professor Bartosz A.
Grzybowski has shown that an acidic droplet can successfully
navigate a complex maze (J. Am. Chem. Soc., DOI: 10.1021/ja9076793).
“I personally find most exciting that such a simple system can
exhibit apparently ‘intelligent’ behavior,” Louisiana State University
chemistry professor John
A. Pojman comments. “This approach may be useful as a pumping
method for microfluidics or a way to convert chemical energy to
mechanical motion in small devices. I am eager to see if they can
generalize it to other types of gradients,” he says.