@article{218468a3686842bf8327b1e477d9c9f2,
title = "In situ loading and x-ray diffraction quantification of strains in hydroxyapatite particles within a 3D printed scaffold",
abstract = "A 3D printed scaffold consisting of a composite with very high volume fraction of particulate hydroxyapatite (hAp, 74 vol.%) and small volume fraction of poly-lactic-co-glycolic acid (26 vol.%) was loaded in compression, and the internal strains in the hAp phase were measured by high-energy x-ray diffraction. Diffraction patterns were recorded at multiple positions in the scaffold at cross-head displacements of 0, -0.52 and -0.62 mm (2.0 mm total scaffold height). The 00.2 and 21.0 hAp strains never exceeded 2 × 10−4, and most positions showed strains ≤ 1 × 10−4, which was the magnitude of the experimental uncertainty.",
keywords = "Hydroxyapatite (hAp), Internal stresses, Synchrotron radiation, Tissue engineering, X-ray diffraction",
author = "Stock, {S. R.} and Park, {J. S.} and A. Jakus and M. Birkbak and S. Fr{\o}lich and H. Birkedal and R. Shah and Almer, {J. D.}",
note = "Funding Information: The funding agencies played no role in the design, execution and interpretation of the experiments. SF, MB and HB thank the Human Frontiers Science Program (HFSP), the Danish Agency for Science, Technology and Innovation (DANSCATT), and the Graduate School of Science and Technology (GSST) of Aarhus University; SF further thanks Danish Council for Independent Research for an EliteForsk travel grant. The hAp-PLGA scaffold was 3D-printed in RS's laboratory, which is part of the Simpson Querrey Institute, Northwestern University. The U.S. Army Research Office, the U.S. Army Medical Research and Material Command, and Northwestern University provided funding to develop this facility. AJ was partially supported through a postdoctoral fellowship from The Hartwell Foundation. Use of the Advanced Photon Source supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. Funding Information: The funding agencies played no role in the design, execution and interpretation of the experiments. SF, MB and HB thank the Human Frontiers Science Program (HFSP), the Danish Agency for Science, Technology and Innovation (DANSCATT), and the Graduate School of Science and Technology (GSST) of Aarhus University; SF further thanks Danish Council for Independent Research for an EliteForsk travel grant. The hAp-PLGA scaffold was 3D-printed in RS's laboratory, which is part of the Simpson Querrey Institute, Northwestern University. The U.S. Army Research Office , the U.S. Army Medical Research and Material Command , and Northwestern University provided funding to develop this facility. AJ was partially supported through a postdoctoral fellowship from The Hartwell Foundation . Use of the Advanced Photon Source supported by the U.S. Department of Energy , Office of Science , Office of Basic Energy Sciences , under Contract No. DE-AC02-06CH11357 . Publisher Copyright: {\textcopyright} 2021",
year = "2021",
month = aug,
doi = "10.1016/j.mtla.2021.101174",
language = "English (US)",
volume = "18",
journal = "Materialia",
issn = "2589-1529",
publisher = "Elsevier BV",
}