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The way in which objects interact with various fields often allows us to detect their presence. Thus, imaging techniques based on reflections, echoes and shadows, as well as any form of scattering and localization more generally, inform us on the location, shape and composition of an object even if buried deep under thick layers of materials. Conversely, to hide an object, we say to “cloak” it, we must suppress any interaction it might have with probing fields. Care must of course be taken so that the cloaking device itself is cloaked as well. In this talk, we show how to cloak solids against stress waves.
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