Science Article #3

Stereo Speakers Can Levitate Dust for Mars Colonists

Ghose, T. “Stereo Speakers Can Levitate Dust for Mars Colonists”. Wired Science. January 30, 2010.
Retrieved January 30, 2010 from
http://www.wired.com/wiredscience/2010/01/acoustic-levitation-of-mars-dust/#ixzz0e9ke8xEH

One of the reasons for colonization for both Mars and the Moon hasn’t happened is because of dust. There is little to no atmosphere on both planets so dusts tend to be a problem. The problem lies in its abrasiveness because it is sharp like a tiny broken glass. It does not wear down into a less abrasive similar to the ones we have on earth. Also, the solar winds and UV radiation can cause electrostatic clinging of dust particles on everything from solar panels, space suits, equipments and vehicles. This would cause a faster wear and tear on these objects, which could really mean life or death in this unforgiving terrain.

There is a way to tackle this dilemma. By using sound waves similar to the ones coming from speakers, it can levitate dust particles off objects or surfaces. This technique is called acoustic levitation or acoustic “dustbuster”. It has been done before on a mock Martian and Moon landscape. The solar panels were covered in dust and the acoustic dustbuster had eliminated the dust particles enough for the solar panels to produce at almost maximum output.

However, there is one problem. This technique only works when there is an atmosphere because only sound waves can travel through air. Again, the planet Mars and the Moon have no little to no air therefore the acoustic levitation would not work. The only way it would work is if it is under pressurized and sealed environment.