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Mapping active strain using terahertz metamaterial laminates

Publication ,  Journal Article
Khatib, O; Tyler, T; Padilla, WJ; Jokerst, NM; Everitt, HO
Published in: APL Photonics
November 1, 2021

The ability to image strain fields in composite materials is an indispensable necessity for structural health monitoring. Embedded electromagnetic metamaterials sensitive to applied stresses and operating in the terahertz regime have been proposed as a solution, but they have traditionally relied on slight amplitude or frequency shifts of their terahertz spectral resonance relative to a presumably unchanging, unstrained reference spectral map. Here, we demonstrate a facile, reference-free imaging technique to map the currently active local strain throughout a composite structure using a reversible passive terahertz metamaterial laminate with a tailored polarimetric signature. Only two orthogonal polarizations and a few frequencies are required to measure this strong terahertz response, from which the local strain environment may be rapidly and quantitatively mapped over large areas.

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Published In

APL Photonics

DOI

EISSN

2378-0967

Publication Date

November 1, 2021

Volume

6

Issue

11

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 0205 Optical Physics
 

Citation

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Khatib, O., Tyler, T., Padilla, W. J., Jokerst, N. M., & Everitt, H. O. (2021). Mapping active strain using terahertz metamaterial laminates. APL Photonics, 6(11). https://doi.org/10.1063/5.0069723
Khatib, O., T. Tyler, W. J. Padilla, N. M. Jokerst, and H. O. Everitt. “Mapping active strain using terahertz metamaterial laminates.” APL Photonics 6, no. 11 (November 1, 2021). https://doi.org/10.1063/5.0069723.
Khatib O, Tyler T, Padilla WJ, Jokerst NM, Everitt HO. Mapping active strain using terahertz metamaterial laminates. APL Photonics. 2021 Nov 1;6(11).
Khatib, O., et al. “Mapping active strain using terahertz metamaterial laminates.” APL Photonics, vol. 6, no. 11, Nov. 2021. Scopus, doi:10.1063/5.0069723.
Khatib O, Tyler T, Padilla WJ, Jokerst NM, Everitt HO. Mapping active strain using terahertz metamaterial laminates. APL Photonics. 2021 Nov 1;6(11).
Journal cover image

Published In

APL Photonics

DOI

EISSN

2378-0967

Publication Date

November 1, 2021

Volume

6

Issue

11

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 0205 Optical Physics