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Microscopy and Microanalysis

Subject Areas: Instrumentation
ISSN: 1431-9276
SJR: 72

LitStream

Journal Article

Unveiling the Inner Structure of Micrometric Hollow Polymeric Fibers Using Synchrotron X-Ray Nanotomography

Torre, Jorge; Cimavilla-Román, Paula; Cuadra-Rodríguez, Daniel; Rodríguez-Pérez, Miguel Ángel; Guttmann, Peter; Werner, Stephan; Pinto, Javier; Barroso-Solares, Suset

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad139 pmid:38214892

In this study, a novel application of synchrotron X-ray nanotomography based on high-resolution full-field transmission X-ray microscopy for characterizing the structure and morphology of micrometric hollow polymeric fibers is presented. By employing postimage analysis using an open-source...
Open Access

Journal Article

Microscopy of Woven and Nonwoven Face Covering Materials: Implications for Particle Filtration

Vicenzi, Edward P; Whittaker, Scott; Weaver, Jamie L; Staymates, Matthew E; Radney, James G; Zangmeister, Christopher D

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad138 pmid:38252594

A suite of natural, synthetic, and mixed synthetic-natural woven fabrics, along with nonwoven filtration layers from a surgical mask and an N95 respirator, was examined using visible light microscopy, scanning electron microscopy, and micro-X-ray computed tomography (µXCT) to determine the fiber...
LitStream

Journal Article

Novel Method for the Preparation of Lamellas From Porous and Brittle Materials for In Situ TEM Heating/Biasing

Zorro, Fátima; Carbo-Argibay, Enrique; Ferreira, Paulo J

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad141 pmid:38321710

A novel method for the preparation of lamellas made from porous and brittle compressed green powder using a focused ion beam (FIB) is described. One of the main purposes for the development of this methodology is to use this type of samples in micro-electromechanical systems (MEMS) chips for in...
LitStream

Journal Article

Significant Oxygen Underestimation When Quantifying Barium-Doped SrTiO Layers by Atom Probe Tomography

Morris, Richard J H; Lin, Jhao-Rong; Scheerder, Jeroen E; Popovici, Mihaela I; Meersschaut, Johan; Goux, Ludovic; Kar, Gouri Sankar; van der Heide, Paul; Fleischmann, Claudia

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad144 pmid:38232229

In this paper, the capability for quantifying the composition of Ba-doped SrTiO layers from an atom probe measurement was explored. Rutherford backscattering spectrometry and time-of-flight/energy elastic recoil detection were used to benchmark the composition where the amount of titanium was...
LitStream

Journal Article

TEM Investigation on the Dislocation Loops in Zirconium Alloy by Neutron and Kr+ Ion Irradiation Tests

Wang, Zhen; Fang, Zhong-Qiang; Yan, Qing-Xue; Wu, Lu; Lu, Chen-Yang

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozae003 pmid:38285920

Neutron irradiation (E ≥ 1 MeV) and 400 keV Kr+ ion irradiation tests were carried out and compared to study the formation and growth mechanism of dislocation loops in zirconium alloys. The results show that, as the irradiation reached 1.9 × 1025 n/m2 and 1.0 × 1020 Kr+/m2, a large number of...
LitStream

Journal Article

Conjugate Multimode Heat Transfer Analysis of Cryogenic EXLO Manipulation

Beggs, Kyle W; Kassab, Alain J; Colletta, Michael; Yu, Yue; Kourkoutis, Lena F; Darwish, Ahmed A; Giannuzzi, Lucille A

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad134 pmid:38180779

In this study, a conjugate radiation/conduction multimode heat transfer analysis of cryogenic focused ion beam (FIB) milling steps necessary for producing ex situ lift out specimens under cryogenic conditions (cryo-EXLO) is performed. Using finite volume for transient heat conduction and...
LitStream

Journal Article

Machine Learning Refinement of In Situ Images Acquired by Low Electron Dose LC-TEM

Katsuno, Hiroyasu; Kimura, Yuki; Yamazaki, Tomoya; Takigawa, Ichigaku

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozad142 pmid:38285924

We have studied a machine learning (ML) technique for refining images acquired during in situ observation using liquid-cell transmission electron microscopy. Our model is constructed using a U-Net architecture and a ResNet encoder. For training our ML model, we prepared an original image dataset...
Open Access

Journal Article

Generalization Across Experimental Parameters in Neural Network Analysis of High-Resolution Transmission Electron Microscopy Datasets

Sytwu, Katherine; Rangel DaCosta, Luis; Scott, Mary C

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozae001 pmid:38285915

Neural networks are promising tools for high-throughput and accurate transmission electron microscopy (TEM) analysis of nanomaterials, but are known to generalize poorly on data that is “out-of-distribution” from their training data. Given the limited set of image features typically seen in...
Open Access

Journal Article

The Potential of Subsampling and Inpainting for Fast Low-Dose Cryo FIB-SEM Imaging

Nicholls, Daniel; Kobylynska, Maryna; Broad, Zoë; Wells, Jack; Robinson, Alex; McGrouther, Damien; Moshtaghpour, Amirafshar; Kirkland, Angus I; Fleck, Roland A; Browning, Nigel D

2024 Microscopy and Microanalysis

doi:10.1093/micmic/ozae005 pmid:38321738

Traditional image acquisition for cryo focused ion-beam scanning electron microscopy (FIB-SEM) tomography often sees thousands of images being captured over a period of many hours, with immense data sets being produced. When imaging beam sensitive materials, these images are often compromised by...
Open Access

Journal Article

Live Iterative Ptychography

Weber, Dieter; Ehrig, Simeon; Schropp, Andreas; Clausen, Alexander; Achilles, Silvio; Hoffmann, Nico; Bussmann, Michael; Dunin-Borkowski, Rafal E; Schroer, Christian G

2024 Microscopy and Microanalysis

doi:10.1093/mam/ozae004 pmid:38376755

We demonstrate live-updating ptychographic reconstruction with the extended ptychographical iterative engine, an iterative ptychography method, during ongoing data acquisition. The reconstruction starts with a small subset of the total data, and as the acquisition proceeds the data used for...

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