If any device can harvest significant energy from such vibrations, it will also serve as a detector for such vibrations. What does the prefix "multi" add to this?

(Is this just a Gizmodo or PES-Wiki title rendered into all lower-case?)

(Which admittedly beats all-caps, though not by much.)

sorry ,actually instead of ambient I typed it as multi vibrations.. so could you please tell me how can energy be harvested by ambient vibrations and the devices that sense these vibrations?

mulimicrophones

It would also become an absorber so eventually vibrations would stop or diminish. Don't quite understand the meaning of "multi".