the interface between a pair of nanoliter-sized aqueous droplets in oil, ii) exchange of one
droplet of the pair to form a new bilayer, and iii) current measurements on single proteins. A
new microfluidic architecture is introduced–a set of traps designed to localize the droplets
with respect to each other and with respect to the recording electrodes. The system allows
for automated execution of experimental protocols by active control of the flow on chip with …