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A large part of our recent efforts have been in the understanding and generation of anechoic (non-reflective) traveling waves in finite structures. By that we mean waves that propagate in a solid finite media with no reflections at the boundaries. There as several applications to this work that can be transformative such as biomimicry of the the helicotrema in the inner ear, drag reduction or non-contact fluid mixing. For a video of an experiment result of a non reflective traveling wave in a free-free beam see here: Beam traveling wave |