Shape-adaptable hyperlens for acoustic magnifying imaging

Previous prototypes of acoustic hyperlens consist of rigid channels, which are unable to adapt in shape to the object under detection. We propose to overcome this limitation by employing softplastic tubes that could guide acoustics with robustness againstbendingdeformation. Based on the idea of soft-tube acoustics, acoustic magnifying hyperlens with planar input and output surfaces has been fabricated and validated experimentally. The shape-adaption capability of the soft-tube hyperlens is demonstrated by a controlled experiment, in which the magnifying super-resolutionimages remain stable when the lens input surface is curved. Our study suggests a feasible route toward constructing the flexible channel-structured acousticmetamaterials with the shape-adaption capability, opening then an additional degree of freedom for full control of sound.

Source: Applied Physics Letters - December 2, 2016 Category: Physics Authors: Hongkuan Zhang, Xiaoming Zhou and Gengkai Hu Source Type: research