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Abstract
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.
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Kahnt M, Sala S, Johansson U, Björling A, Jiang Z, Kalbfleisch S, Lenrick F, Pikul JH, Thånell K. First ptychographic X-ray computed tomography experiment on the NanoMAX beamline. J Appl Crystallogr 2020; 53:1444-1451. [PMID: 33304222 PMCID: PMC7710494 DOI: 10.1107/s160057672001211x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 09/01/2020] [Indexed: 11/19/2022] Open
Abstract
Documentation is presented for the first ptychographic X-ray computed tomography experiment on the NanoMAX beamline, along with a quantitative analysis of the reconstruction quality and a discussion of possibilities for future improvements. Ptychographic X-ray computed tomography is a quantitative three-dimensional imaging technique offered to users of multiple synchrotron radiation sources. Its dependence on the coherent fraction of the available X-ray beam makes it perfectly suited to diffraction-limited storage rings. Although MAX IV is the first, and so far only, operating fourth-generation synchrotron light source, none of its experimental stations is currently set up to offer this technique to its users. The first ptychographic X-ray computed tomography experiment has therefore been performed on the NanoMAX beamline. From the results, information was gained about the current limitations of the experimental setup and where attention should be focused for improvement. The extracted parameters in terms of scanning speed, size of the imaged volume and achieved resolutions should provide a baseline for future users designing nano-tomography experiments on the NanoMAX beamline.
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Affiliation(s)
- Maik Kahnt
- MAX IV Laboratory, Lund University, Lund, Sweden
| | - Simone Sala
- MAX IV Laboratory, Lund University, Lund, Sweden
| | | | | | - Zhimin Jiang
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, USA
| | | | - Filip Lenrick
- Synchrotron Radiation Research, Lund University, Lund, Sweden.,Production and Materials Engineering, Lund University, Lund, Sweden
| | - James H Pikul
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, USA
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Lo YH, Liao CT, Zhou J, Rana A, Bevis CS, Gui G, Enders B, Cannon KM, Yu YS, Celestre R, Nowrouzi K, Shapiro D, Kapteyn H, Falcone R, Bennett C, Murnane M, Miao J. Multimodal x-ray and electron microscopy of the Allende meteorite. SCIENCE ADVANCES 2019; 5:eaax3009. [PMID: 31555739 PMCID: PMC6754224 DOI: 10.1126/sciadv.aax3009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 08/23/2019] [Indexed: 06/10/2023]
Abstract
Multimodal microscopy that combines complementary nanoscale imaging techniques is critical for extracting comprehensive chemical, structural, and functional information, particularly for heterogeneous samples. X-ray microscopy can achieve high-resolution imaging of bulk materials with chemical, magnetic, electronic, and bond orientation contrast, while electron microscopy provides atomic-scale spatial resolution with quantitative elemental composition. Here, we combine x-ray ptychography and scanning transmission x-ray spectromicroscopy with three-dimensional energy-dispersive spectroscopy and electron tomography to perform structural and chemical mapping of an Allende meteorite particle with 15-nm spatial resolution. We use textural and quantitative elemental information to infer the mineral composition and discuss potential processes that occurred before or after accretion. We anticipate that correlative x-ray and electron microscopy overcome the limitations of individual imaging modalities and open up a route to future multiscale nondestructive microscopies of complex functional materials and biological systems.
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Affiliation(s)
- Yuan Hung Lo
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Chen-Ting Liao
- JILA and Department of Physics, University of Colorado and National Institute of Standards and Technology (NIST), Boulder, CO 80309, USA
| | - Jihan Zhou
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Arjun Rana
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
| | - Charles S. Bevis
- JILA and Department of Physics, University of Colorado and National Institute of Standards and Technology (NIST), Boulder, CO 80309, USA
| | - Guan Gui
- JILA and Department of Physics, University of Colorado and National Institute of Standards and Technology (NIST), Boulder, CO 80309, USA
| | - Bjoern Enders
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Kevin M. Cannon
- Department of Physics, University of Central Florida, Orlando, FL 32816, USA
| | - Young-Sang Yu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Richard Celestre
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Kasra Nowrouzi
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - David Shapiro
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Henry Kapteyn
- JILA and Department of Physics, University of Colorado and National Institute of Standards and Technology (NIST), Boulder, CO 80309, USA
| | - Roger Falcone
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Chris Bennett
- Department of Physics, University of Central Florida, Orlando, FL 32816, USA
| | - Margaret Murnane
- JILA and Department of Physics, University of Colorado and National Institute of Standards and Technology (NIST), Boulder, CO 80309, USA
| | - Jianwei Miao
- Department of Physics and Astronomy and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA
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Odstrčil M, Lebugle M, Guizar-Sicairos M, David C, Holler M. Towards optimized illumination for high-resolution ptychography. OPTICS EXPRESS 2019; 27:14981-14997. [PMID: 31163938 DOI: 10.1364/oe.27.014981] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We present a systematic study, where effects of the illumination probe design on ptychography reconstruction quality are evaluated under well-controlled conditions. The illumination probe was created using Fresnel zone-plate (FZP) optics with locally displaced zones to provide a fine control over perturbations of the illumination wavefront. We show that optimally designed wavefront modulations not only reduce bias and variance in the reconstruction of the lowest spatial frequencies but also lead to improved imaging resolution and reduction of artefacts compared to a conventional FZP. Both these factors are important for quantitative accuracy and resolution of ptychographic tomography. Our work furthers the understanding of the important characteristics of an optimal illumination for high-resolution X-ray ptychography and how to design optimal FZP wavefront modulations for different applications of ptychographic imaging. These findings are applicable and relevant for ptychography using optical, EUV, and X-ray photons as well as electrons.
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Odstrcil M, Lebugle M, Lachat T, Raabe J, Holler M. Fast positioning for X-ray scanning microscopy by a combined motion of sample and beam-defining optics. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:504-509. [PMID: 30855261 PMCID: PMC6412177 DOI: 10.1107/s160057751801785x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 12/18/2018] [Indexed: 05/18/2023]
Abstract
Scanning X-ray microscopy such as X-ray ptychography requires accurate and fast positioning of samples in the X-ray beam. Sample stages often have a high mobile mass as they may carry additional mechanics or mirrors for position measurements. The high mobile mass of a piezo stage can introduce vibrations in the setup that will lead to imaging quality deterioration. Sample stages also require a large travel range which results in a slow positioning step response and thus high positioning overhead. Moving lightweight X-ray optics, such as focusing Fresnel zone plates, instead of the sample can improve the situation but it may lead to undesired variations in the illumination probe which may result in reconstruction artifacts. This paper presents a combined approach in which a slow sample stage mechanism covers the long distance range for a large field of view, and a light-weight optics scanner with a small travel range creates a superimposed motion to achieve a fast step response. The step response in the ptychographic tomography instrument used was thereby improved by an order of magnitude, allowing for efficient measurement without loss of imaging quality.
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Affiliation(s)
- Michal Odstrcil
- Swiss Light Source, Paul Scherrer Institute, Villigen 5232, Switzerland
| | - Maxime Lebugle
- Laboratory for Micro and Nanotechnology, Paul Scherrer Institute, Villigen 5232, Switzerland
| | - Thierry Lachat
- Swiss Light Source, Paul Scherrer Institute, Villigen 5232, Switzerland
| | - Jörg Raabe
- Swiss Light Source, Paul Scherrer Institute, Villigen 5232, Switzerland
| | - Mirko Holler
- Swiss Light Source, Paul Scherrer Institute, Villigen 5232, Switzerland
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