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Mapping granular structure in the biological adhesive of Phragmatopoma californica using phase diverse coherent diffractive imaging |
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| Authors: | Corey T. Putkunz Jesse N. Clark David J. Vine Garth J. Williams Eugeniu Balaur Guido A. Cadenazzi Evan K. Curwood Clare A. Henderson Robert E. Scholten Russell J. StewartIan McNulty Keith A. Nugent Andrew G. Peele |
| Affiliation: | a Department of Physics, La Trobe University, Victoria 3086, Australia b School of Physics, The University of Melbourne, Victoria 3010, Australia c Australian Research Council Centre of Excellence for Coherent X-Ray Science, Australia d Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA e Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA |
| Abstract: | This paper demonstrates the application of the high sensitivity, low radiation dose imaging method recently presented as phase diverse coherent diffraction imaging, to the study of biological and other weakly scattering samples. The method is applied, using X-ray illumination, to quantitative imaging of the granular precursors of underwater adhesive produced by the marine sandcastle worm, Phragmatopoma californica. We are able to observe the internal structure of the adhesive precursors in a number of states. |
| Keywords: | Phase retrieval Phase-diversity Ptychography Diffractive imaging Biological imaging |
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