Article
Optics
William K. Peters, Travis Jones, Anatoly Efimov, Emanuele Pedersoli, Laura Foglia, Riccardo Mincigrucci, Ivaylo Nikolov, Rick Trebino, Miltcho B. Danailov, Flavio Capotondi, Filippo Bencivenga, Pamela Bowlan
Summary: Recent advances in ultrafast extreme ultraviolet (EUV) and x-ray light sources have provided direct access to fundamental time and length scales for biology, chemistry, and materials physics. However, measuring such light pulses is challenging due to the need for femtosecond time resolution at difficult-to-detect wavelengths. By utilizing a novel version of frequency resolved optical gating, single-shot, complete field measurements have been demonstrated, offering new possibilities for research in various fields.
Article
Engineering, Chemical
Hyunwoo Lim, Jonghyeok Lee, Soohyun Lee, Hyosung Cho, Hunwoo Lee, Duhee Jeon
Summary: This study presents a novel approach using single-shot grid-based dark-field X-ray imaging (SG-DFXI) for detecting low-density foreign bodies (FBs) in food products. The experiment showed that the proposed method was able to detect low-density FBs that were barely visible in absorption images and significantly improved the ability to detect them in food samples. The relative contrast gain (RCG) characteristic was improved as the system's autocorrelation length (xi(G)) increased.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Akinobu Niozu, Yoshiaki Kumagai, Toshiyuki Nishiyama Hiraki, Hironobu Fukuzawa, Koji Motomura, Maximilian Bucher, Kazuki Asa, Yuhiro Sato, Yuta Ito, Daehyun You, Taishi Ono, Yiwen Li, Edwin Kukk, Catalin Miron, Liviu Neagu, Carlo Callegari, Michele Di Fraia, Giorgio Rossi, Davide Emilio Galli, Tommaso Pincelli, Alessandro Colombo, Shigeki Owada, Kensuke Tono, Takashi Kameshima, Yasumasa Joti, Tetsuo Katayama, Tadashi Togashi, Makina Yabashi, Kazuhiro Matsuda, Christoph Bostedt, Kiyoshi Ueda, Kiyonobu Nagaya
Summary: This study explores the formation process of solid Xe nanoparticles in an expanding supercooled Xe jet under vacuum conditions using X-ray diffraction experiments. It is found that the structure of Xe nanoparticles is a mixture of face-centered cubic and randomly stacked hexagonal close-packed structures, rather than pure face-centered cubic. Instantaneous coexistence of comparably sized face-centered cubic and hexagonal close-packed domains in single Xe nanoparticles is observed.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Multidisciplinary Sciences
Ravi Kumar, Vijayakumar Anand, Joseph Rosen
Summary: Interferenceless coded aperture correlation holography (I-COACH) techniques have revolutionized incoherent imaging by offering high-resolution multidimensional imaging capabilities with a simple optical configuration and low cost. The I-COACH method uses phase modulators to encode 3D location information into unique spatial intensity distributions, allowing for object reconstruction using recorded point spread functions (PSFs). Previous versions of I-COACH suffered from low signal-to-noise ratios and reduced imaging resolution due to the use of scattered intensity distributions or random dot array patterns. This study introduces I-COACH using a phase modulator that maps each object point into a sparse random array of Airy beams, resulting in improved SNR and sharper intensity distributions.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Multidisciplinary
Tatiana Latychevskaia
Summary: In this study, a new method is proposed to reconstruct 3D sample distribution from a single 2D intensity measurement, exceeding the classical limit in z resolution. This method is practical for radiation-sensitive materials or experimental setups with constraints on the number of intensity measurements.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Mohamed Touil, Said Idlahcen, Rezki Becheker, Denis Lebrun, Claude Roze, Ammar Hideur, Thomas Godin
Summary: This paper introduces a versatile single-shot imaging technique that combines STAMP, AOPDF, and DIH to improve imaging speed and enhance system flexibility. AOPDF allows for flexible adjustment of parameters, while DIH enables reconstruction on a wide depth of field. The system's imaging speed and flexibility are demonstrated by visualizing ultrashort events.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Physics, Multidisciplinary
Yuki Takayama, Keizo Fukuda, Motoki Kawashima, Yuki Aoi, Daiki Shigematsu, Tatsuki Akada, Takumi Ikeda, Yasushi Kagoshima
Summary: The study introduces the multiple-shot CDI technique, which can observe the dynamic nanostructure in extended objects at high resolution. By using a robust scanning variant and establishing a constraint of spatio-temporal smoothness, it provides reliable reconstruction of dynamic images.
COMMUNICATIONS PHYSICS
(2021)
Article
Optics
Nisan Siegel, Gary Brooker
Summary: This new super-resolution microscopy technique utilizes a simple and versatile approach to achieve better resolution than other complex methods after a single image capture. It can work with any objective power and numerical aperture, is easy to operate and maintain, and can create super-resolved images using any type or wavelength of light.
Article
Optics
Jeonghun Oh, KyeoReh Lee, YongKeun Park
Summary: Recent research has shown that liquid crystal geometric phase diffusers can be used for single-shot reference-free holographic imaging based on speckle-correlation scattering, without the need for calibration. This low-cost, simple, and high-resolution wavefront sensing approach inspired by liquid crystal materials may have direct applications in metrology, industrial inspection, and biophotonics.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Nathaniel Hai, Ravi Kumar, Joseph Rosen
Summary: This paper presents a new method for quantitative phase imaging based on single-shot TIE using polarization multiplexing. The two defocused intensity distributions are recorded simultaneously on a single camera plane, making the phase recovery process simpler and more convenient. The technique is suitable for both static and dynamic phase measurements, including biological samples.
OPTICS AND LASERS IN ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Peng Wang, Lihong V. Wang
Summary: Understanding ultrafast dynamics in the femtosecond timescale is crucial, but existing imaging techniques fail to capture these events. Compressed ultrafast spectral photography (CUSP) overcomes these limitations and achieves an extraordinary frame rate of 219x10^12 fps. CUSP is highly flexible and can be used in various scientific studies.
Article
Optics
Xin Liu, Lang Liu, Jianheng Huang, Yaohu Lei, Ji Li
Summary: In this paper, a single grating imaging system is proposed for X-ray phase-contrast imaging. The system uses a single-shot algorithm to retrieve attenuation and phase gradient distribution, achieving time-saving and detail preservation. By using a large-size X-ray detector, the system can be configured for both microscopic and large field-of-view imaging.
Article
Optics
Hyunwoo Lim, Hyosung Cho, Hunwoo Lee, Duhee Jeon
Summary: In this study, the quantification of dark-field effects in single-shot grid-based x-ray imaging setup was successfully achieved by measuring the real space correlation function of scattering samples. The experimental measurements were in good agreement with theoretical quantification, confirming the effectiveness of this approach for single-shot grid-based dark-field x-ray imaging. This understanding of particle-scale selectivity and suitable applications is crucial for the advancement of this technology.
Article
Optics
B. Saucedo, A. Davila, J. A. Rayas, M. Pena-Cruz
Summary: This study calculates the optical path differences (OPDs) produced by multiple reflections inside an integrating sphere coated with white paint using a ray-tracing program. It is found that the resulting OPDs are randomly distributed over the speckle field-of-view, but with a characteristic curve that strongly depends on the dimensions of the optical setup, the internal reflection coefficient, and the diameter of the integrating sphere. The removal of singularities and vortices is necessary for phase-change calculation. The ray-tracing simulations are confirmed by experimental results.
OPTICS AND LASERS IN ENGINEERING
(2023)
Article
Optics
Joana Duarte, Aura Ines Gonzalez, Remy Cassin, Rana Nicolas, Maria Kholodstova, Willem Boutu, Marta Fajardo, Hamed Merdji
Summary: This paper introduces a method for single-shot measurement of spatial coherence of a light source using a specific arrangement of a two-dimensional non-redundant array of apertures. This method eliminates the need for parallel measurement of beam intensity and is robust against beam-pointing instabilities. Experimental validation demonstrates the strong robustness of the method in different regimes.
Article
Materials Science, Multidisciplinary
Patrick T. Corona, Barbara Berke, Manuel Guizar-Sicairos, L. Gary Leal, Marianne Liebi, Matthew E. Helgeson
Summary: This study introduces a measurement method using scanning small-angle x-ray scattering to characterize the nanostructure of complex fluids, allowing rapid mapping of fluid orientation along diverse flow histories. Demonstrative experiments on rodlike nanoparticle dispersions reveal the significant role of rod flexibility and rod-rod interactions in determining the fluid's structural response.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Endocrinology & Metabolism
Mikko A. J. Finnila, Shuvashis Das Gupta, Mikael J. Turunen, Iida Hellberg, Aleksandra Turkiewicz, Viviane Lutz-Bueno, Elin Jonsson, Mirko Holler, Neserin Ali, Velocity Hughes, Hanna Isaksson, Jon Tjornstrand, Patrik Onnerfjord, Manuel Guizar-Sicairos, Simo Saarakkala, Martin Englund
Summary: This study used advanced microfocus small-angle X-ray scattering to determine the size and organization of mineral crystals at the nanostructural level in human subchondral bone and calcified cartilage. The research found thicker and more mutually aligned mineral crystals in calcified cartilage compared to adjoining bone, as well as identified a well-defined layer associated with pathological tidemark multiplication.
JOURNAL OF BONE AND MINERAL RESEARCH
(2022)
Article
Instruments & Instrumentation
Mirko Holler, Tomas Aidukas, Lars Heller, Christian Appel, Nicholas W. Phillips, Elisabeth Mueller-Gubler, Manuel Guizar-Sicairos, Joerg Raabe, Johannes Ihli
Summary: This article introduces an environmental control system for X-ray nanotomography, which allows for in situ or operando tomographic studies at different temperatures. The system is implemented on the flOMNI microscope with related modifications. The performance of the device is demonstrated through tomographic measurements of a nanoporous gold sample.
JOURNAL OF SYNCHROTRON RADIATION
(2022)
Article
Chemistry, Physical
Mengyan Li, Johannes Ihli, Marcel A. Verheijen, Mirko Holler, Manuel Guizar-Sicairos, Jeroen A. van Bokhoven, Emiel J. M. Hensen, Thomas Weber
Summary: Preparation conditions have a significant impact on the structure and performance of alumina-supported hydrodesulfurization catalysts. The study found that catalyst samples prepared from different chemical sources exhibited notable differences in structure and activity, with sample B showing higher activity than sample A, and these differences can be attributed to the structural variations caused by the different preparation conditions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
Sven Froehlich, Xu Liu, Aimrane Hamdou, Alric Meunier, Mukhtar Hussain, Mathieu Carole, Shatha Kaassamani, Marie Froidevaux, Laure Lavoute, Dmitry Gaponov, Nicolas Ducros, Sebastien Fevrier, Philippe Zeitoun, Milutin Kovacev, Marta Fajardo, Willem Boutu, David Gauthier, Hamed Merdji
Summary: We demonstrate a self-probing method for imaging an object using semiconductor high-harmonic generation. Combining ptychography measurements with nanopatterned crystals, we are able to obtain structural information of the object. This innovative approach has the potential to revolutionize nanoscale imaging of photonic and electronic devices.
Article
Engineering, Environmental
Giada Lo Re, Emile R. Engel, Linnea Bjorn, Manuel Guizar Sicairos, Marianne Liebi, Jan Wahlberg, Katarina Jonasson, Per A. Larsson
Summary: To replace materials from non-renewable sources, cellulosic materials need to overcome limitations such as fragility, gas permeability, susceptibility to water vapor, and poor shaping. Innovative properties or improved existing properties are essential to expand their applications and create new market opportunities. The study successfully overcomes restrictions in melt-processing of high cellulose content composites and demonstrates the use of chemically modified cellulose fibers for manufacturing highly sustainable materials with tailored properties for specific applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Optics
Yaocheng Tian, James R. Fienup
Summary: We demonstrate the possibility of reconstructing a real-valued, nonnegative 2D object from the magnitude of its Fourier transform, even in the presence of significant noise in the Fourier intensity data, by solely using a nonnegativity constraint without the usual support constraint.
Article
Nanoscience & Nanotechnology
Kinanti Aliyah, Christian Prehal, Justus S. Diercks, Natasa Diklic, Linfeng Xu, Secil Uensal, Christian Appel, Brian R. Pauw, Glen J. Smales, Manuel Guizar-Sicairos, Juan Herranz, Lorenz Gubler, Felix N. Buchi, Jens Eller
Summary: A method using small-angle X-ray scattering (SAXS) is proposed to quantify the presence of liquid water in polymer electrolyte fuel cell (PEFC) catalyst layers (CLs). The method is validated through wetting experiments and allows for interpretation of the measured SAXS data to derive the most probable wetting mechanism in a flow cell electrode.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Biomedical
Elisa A. Casanova, Adrian Rodriguez-Palomo, Lisa Stahli, Kevin Arnke, Olivier Groninger, Melanie Generali, Yvonne Neldner, Simon Tiziani, Ana Perez Dominguez, Manuel Guizar-Sicairos, Zirui Gao, Christian Appel, Leonard C. Nielsen, Marios Georgiadis, Franz E. Weber, Wendelin Stark, Hans-Christoph Pape, Paolo Cinelli, Marianne Liebi
Summary: A new bioengineering strategy using oriented biocompatible 3D PLGA/aCaP nanocomposites has been developed to enhance osseointegration and treat large bone defects. Two types of scaffolds, decellularized or seeded with adipose-derived mesenchymal stromal cells, showed high osseointegration, improved bone quality, increased alignment of collagen fibers, and optimal alignment and size of hydroxyapatite minerals, as determined by micro-CT analysis and SAXS imaging.
Article
Multidisciplinary Sciences
Salvatore De Angelis, Tobias Schuler, Mayank Sabharwal, Mirko Holler, Manuel Guizar-Sicairos, Elisabeth Mueller, Felix N. Buechi
Summary: Reducing precious metal loading in the anodic catalyst layer is crucial for cost reduction and wider adoption of polymer electrolyte water electrolysis. This study presents the first 3D reconstruction of a TiO2-supported IrO2 core shell catalyst layer, revealing the nanoporous structure of IrO2 shells and the non-uniform thickness of the ionomer. The analysis of conductivity shows that the ionic conductivity is significantly lower than the electronic conductivity in a dry catalyst layer.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Biomedical
Marios Georgiadis, Miriam Menzel, Jan A. Reuter, Donald E. Born, Sophie R. Kovacevich, Dario Alvarez, Hossein Moein Taghavi, Aileen Schroeter, Markus Rudin, Zirui Gao, Manuel Guizar-Sicairos, Thomas M. Weiss, Markus Axer, Ivan Rajkovic, Michael M. Zeineh
Summary: Small-angle X-ray scattering (SAXS) can be used to specifically detect myelinated axon crossings and help generate accurate structural connectivity maps in the brain.
ACTA BIOMATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Leonard C. Nielsen, Paul Erhart, Manuel Guizar-Sicairos, Marianne Liebi
Summary: We present a method using band-limited spherical functions for the reconstruction of reciprocal-space maps of various nanostructures. The method has been thoroughly tested and evaluated for its robustness and computational performance.
ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Qing Wu, Karolina Soppa, Elisabeth Mueller, Julian Mueller, Michal Odstrcil, Esther Hsiao Rho Tsai, Andreas Spaeth, Mirko Holler, Manuel Guizar-Sicairos, Benjamin Butz, Rainer H. Fink, Benjamin Watts
Summary: Using PXCT, we have investigated Zwischgold samples from medieval artworks and modern materials, revealing a decrease in density, an increase in corrosion products, and delamination between the leaf and its substrate.
Article
Chemistry, Physical
Mengyan Li, Johannes Ihli, Marcel A. Verheijen, Mirko Holler, Manuel Guizar-Sicairos, Jeroen A. van Bokhoven, Emiel J. M. Hensen, Thomas Weber
Summary: Preparation conditions have a significant impact on the structure and performance of alumina-supported catalysts for hydrodesulfurization (HDS). Factors such as precursor structure, metal-support interactions, and sulfidation processes contribute to the observed differences in HDS activity between catalyst samples. The choice of different chemical sources for preparation leads to variations in precursor structure and reducibility, affecting the formation of active species and ultimately the catalytic performance in HDS reactions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
Mukhtar Hussain, Fernando Lima, Willem Boutu, Hamed Merdji, Marta Fajardo, Gareth O. Williams
Summary: The surge of interest in nonperturbative high-harmonic generation in solids is due to the appeal of compact solid-state extreme ultraviolet sources and the possibility of understanding material properties through high-harmonic generation response to strong fields. The research shows that third-harmonic generation using specific parameters exhibits nonperturbative behavior in a wide-band-gap insulator, but reverts to perturbative behavior when dopants are introduced.
