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Title: Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses

ORCiD logo [1];  [2]
  1. Department of Mechanical Engineering and Material Science, Duke University, Durham, North Carolina 27708, USA
  2. Department of Mechanical Engineering, University of South Carolina, Columbia, South Carolina 29208, USA
Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
NE 0008400
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 122; Journal Issue: 23; Related Information: CHORUS Timestamp: 2017-12-15 10:53:28; Journal ID: ISSN 0021-8979
American Institute of Physics
Country of Publication:
United States

Citation Formats

Tian, Zhenhua, and Yu, Lingyu. Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses. United States: N. p., 2017. Web. doi:10.1063/1.4999627.
Tian, Zhenhua, & Yu, Lingyu. Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses. United States. doi:10.1063/1.4999627.
Tian, Zhenhua, and Yu, Lingyu. Thu . "Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses". United States. doi:10.1063/1.4999627.
title = {Wavefront modulation and controlling for Lamb waves using surface bonded slice lenses},
author = {Tian, Zhenhua and Yu, Lingyu},
abstractNote = {},
doi = {10.1063/1.4999627},
journal = {Journal of Applied Physics},
number = 23,
volume = 122,
place = {United States},
year = {Thu Dec 21 00:00:00 EST 2017},
month = {Thu Dec 21 00:00:00 EST 2017}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on December 15, 2018
Publisher's Accepted Manuscript

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  • This work deals with an analytical and numerical study of the focusing of the lowest order anti-symmetric Lamb wave in gradient index phononic crystals. Computing the ray trajectories of the elastic beam allowed us to analyze the lateral dimensions and shape of the focus, either in the inner or behind the phononic crystal-based acoustic lenses, for frequencies within a broad range in the first band. We analyzed and discussed the focusing behaviors inside the acoustic lenses where the focalization at sub-wavelength scale was achieved. The focalization behind the gradient index phononic crystal is shown to be efficient as well: wemore » report on FMHM = 0.63λ at 11MHz.« less
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  • Here, the highly convergent x-ray beam focused by multilayer Laue lenses with large numerical apertures is used as a three-dimensional (3D) probe to image layered structures with an axial separation larger than the depth of focus. Instead of collecting weakly scattered high-spatial-frequency signals, the depth-resolving power is provided purely by the intense central cone diverged from the focused beam. Using the multi-slice ptychography method combined with the on-the-fly scan scheme, two layers of nanoparticles separated by 10 μm are successfully reconstructed with 8.1 nm lateral resolution and with a dwell time as low as 0.05 s per scan point. Thismore » approach obtains high-resolution images with extended depth of field, which paves the way for multi-slice ptychography as a high throughput technique for high-resolution 3D imaging of thick samples.« less