Tiny bubbles can solve large problems.
Microbubbles—around 1-50 micrometers in diameter—have widespread
applications. They’re used for drug delivery, membrane cleaning,
biofilm control, and water treatment. They’ve been applied as
actuators in lab-on-a-chip devices for microfluidic mixing, ink-jet
printing, and logic circuitry, and in photonics lithography and
optical resonators. And they’ve contributed remarkably to
biomedical imaging and applications like DNA trapping and
manipulation.