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Hiding scattering layers for noninvasive imaging of hidden objects.

Authors
  • Wu, Kedi
  • Cheng, Qiluan
  • Shi, Yile
  • Wang, Hui
  • Wang, Guo Ping
Type
Published Article
Journal
Scientific Reports
Publisher
Springer Nature
Publication Date
Jan 01, 2015
Volume
5
Pages
8375–8375
Identifiers
DOI: 10.1038/srep08375
PMID: 25669436
Source
Medline
License
Unknown

Abstract

The ability to noninvasive image through turbid media has long been a major scientific and technological goal in many disciplines. A breakthrough has been made to observe objects that were completely hidden behind an opaque scattering layer. However, such approach needs not only to scan both illumination light and detector but further off-line procedures to numerically retrieve the image of the objects. Here, we report a distant invisibility-based noninvasive method that can hide scattering layers and allows to directly image objects behind. By recording holograms of the objects through a ground glass and then using the holograms produced time-reversal lights to re-illuminate the objects, we implemented to observe objects with feature size ranging from 39 μm to 80 μm that were hidden behind a 3 mm thick ground glass. Of importance, our approach opens a door towards real-time, high speed biomedical imaging and in-site inspection of integrated devices.

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