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POPS"A Window into the Future of Sound" continues Like many wonderful discoveries, the first example here arose from failure. In an attempt by the UK Ministry of Defense to find a suitable sound dampening material for their helicopters, they instead stumbled upon a unique honeycomb structure that conducts sound with surprising efficiency. The technology has since been sold to NXT Sound; marketed as SurfaceSound, the innovative design is being crafted into folding flat-panel speakers (14 mm thick) and "speakerless" automobile interiors and mobile phones.