One of the more daunting challenges of sending missions to Mars is the problem of dust. Due to the atmosphere and lack of displacing elements, the dust can be a menace to all forms of human operation. With challenges come great solutions, though; scientists are zeroing in on controlling the particles with acoustic levitation, as shown here:
Blasting a high-pitched noise from a tweeter into a pipe that focuses the sound waves can create enough pressure to lift troublesome alien dust from equipment, suits or vehicles, according to a study published January in the Journal of the Acoustical Society of America.
Wired has the story.