Experimental demonstration of an acoustic magnifying hyperlens.

@article{Li2009ExperimentalDO,
  title={Experimental demonstration of an acoustic magnifying hyperlens.},
  author={Jensen Li and Lee Ren Fok and Xiaobo Yin and Guy Bartal and Xiang Zhang},
  journal={Nature materials},
  year={2009},
  volume={8 12},
  pages={931-4}
}
Acoustic metamaterials can manipulate sound waves in surprising ways, which include collimation, focusing, cloaking, sonic screening and extraordinary transmission. Recent theories suggested that imaging below the diffraction limit using passive elements can be realized by acoustic superlenses or magnifying hyperlenses. These could markedly enhance the capabilities in underwater sonar sensing, medical ultrasound imaging and non-destructive materials testing. However, these proposed approaches… CONTINUE READING
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