气候变化领域集成服务门户(CCPortal): X-ray linear dichroic ptychography

CCPortal

DOI	10.1073/PNAS.2019068118
	X-ray linear dichroic ptychography
	Lo Y.H.; Zhou J.; Rana A.; Morrill D.; Gentry C.; Enders B.; Yu Y.-S.; Sun C.-Y.; Shapiro D.A.; Falcone R.W.; Kapteyn H.C.; Murnane M.M.; Gilbert P.U.P.A.; Miao J.
发表日期	2021
ISSN	00278424
卷号	118 期号:3
英文摘要	Biominerals such as seashells, coral skeletons, bone, and tooth enamel are optically anisotropic crystalline materials with unique nanoscale and microscale organization that translates into exceptional macroscopic mechanical properties, providing inspiration for engineering new and superior biomimetic structures. Using Seriatopora aculeata coral skeleton as a model, here, we experimentally demonstrate X-ray linear dichroic ptychography and map the c-axis orientations of the aragonite (CaCO3) crystals. Linear dichroic phase imaging at the oxygen K-edge energy shows strong polarization-dependent contrast and reveals the presence of both narrow (<35°) and wide (>35°) c-axis angular spread in the coral samples. These X-ray ptychography results are corroborated by four-dimensional (4D) scanning transmission electron microscopy (STEM) on the same samples. Evidence of co-oriented, but disconnected, corallite subdomains indicates jagged crystal boundaries consistent with formation by amorphous nanoparticle attachment. We expect that the combination of X-ray linear dichroic ptychography and 4D STEM could be an important multimodal tool to study nano-crystallites, interfaces, nucleation, and mineral growth of optically anisotropic materials at multiple length scales. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	4D scanning transmission electron microscopy; Biominerals; Coherent diffractive imaging; Ptychography; X-ray linear dichroism
语种	英语
scopus关键词	calcium carbonate; nanoparticle; anisotropy; Article; coral; four-dimensional imaging; linear dichroism; nonhuman; optical resolution; polarization; priority journal; quantitative analysis; radiography; scanning transmission electron microscopy; X ray linear dichroic ptychography
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/181018
作者单位	Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, United States; STROBE NSF Science and Technology Center, University of Colorado Boulder, Boulder, CO 80309, United States; California NanoSystems Institute, University of California, Los Angeles, CA 90095, United States; Department of Bioengineering, University of California, Los Angeles, CA 90095, United States; JILA, University of Colorado Boulder, National Institute of Standards and Technology, Boulder, CO 80309, United States; Department of Physics, University of Colorado Boulder, Boulder, CO 80309, United States; National Energy Research Scientific Computing Center, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, United States; Department of Physics, University of Wisconsin, Madison, WI 53706, United States; Department of Physics, University of California, Berkeley, CA 94720, United States; Departmen...
推荐引用方式 GB/T 7714	Lo Y.H.,Zhou J.,Rana A.,et al. X-ray linear dichroic ptychography[J],2021,118(3).
APA	Lo Y.H..,Zhou J..,Rana A..,Morrill D..,Gentry C..,...&Miao J..(2021).X-ray linear dichroic ptychography.Proceedings of the National Academy of Sciences of the United States of America,118(3).
MLA	Lo Y.H.,et al."X-ray linear dichroic ptychography".Proceedings of the National Academy of Sciences of the United States of America 118.3(2021).