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Hyperspectral interference tomography of nacre

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [1];  [2];  [3];  [1];  [1];  [1];  [3];  [1];  [4];  [2];  [3];  [5];  [6]
  1. Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, WI 53706,
  2. Department of Physics, University of Wisconsin–Madison, Madison, WI 53706,
  3. Middleton Spectral Vision, Middleton, WI 53562,
  4. Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, WI 53706,, Department of Physics, University of Wisconsin–Madison, Madison, WI 53706,
  5. Department of Physics, University of Wisconsin–Madison, Madison, WI 53706,, Department of Chemistry, University of Wisconsin–Madison, Madison, WI 53706,, Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706,, Department of Geoscience, University of Wisconsin–Madison, Madison, WI 53706,, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
  6. Department of Electrical and Computer Engineering, University of Wisconsin–Madison, Madison, WI 53706,, Department of Physics, University of Wisconsin–Madison, Madison, WI 53706,, Department of Materials Science and Engineering, University of Wisconsin–Madison, Madison, WI 53706,

Significance

We invented an optical technique—hyperspectral interference tomography—that rapidly and nondestructively extracts nanoscale structural information across large samples of nacre (mother-of-pearl) and other layered materials by combining multiangle and polarization-resolved hyperspectral imaging with optical-interference modeling. We investigated nacre in mollusk shells from two different species, red abalone and rainbow abalone, and discovered a previously unknown relationship between the age of the mollusk and the thickness of aragonite tablets in nacre. Hyperspectral interference tomography will have applications in climate science, since nacre tablet thickness in fossil shells is a proxy for ancient seawater temperature, and in bioinspired mechanics, because the layered structure of nacre inspires engineered materials with exceptional strength and toughness.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FG02-07ER15899
OSTI ID:
1775017
Alternate ID(s):
OSTI ID: 1844931
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 15 Vol. 118; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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