Compact and versatile neutron imaging detector with sub-4μm spatial resolution based on a single-crystal thin-film scintillator

Tengattini, Alessandro; Kardjilov, Nikolay; Helfen, Lukas; Douissard, Paul-Antoine; Lenoir, Nicolas; Markötter, Henning; Hilger, André; Arlt, Tobias; Paulisch, Melanie; Turek, Thomas; Manke, Ingo

doi:10.1364/oe.448932

Cited by 9 publications

(7 citation statements)

References 45 publications

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“…Regarding potential avenues for future work, NeXT is ripe for even further development and advancements. Leveraging innovations in cold neutron imaging ( 17 ), wavelength-selective ( 22 ) and high-resolution neutron imaging ( 25 , 50 , 51 ), high-quality desktop x-ray systems ( 1 , 9 , 52 , 53 ), and operando-specific image processing ( 17 , 33 , 34 , 40 , 54 ), high-contrast NeXT imaging is poised to realize even higher fidelity and more dynamic scans than those presented here. Furthermore, in this study, a separate analysis of x-ray and neutron histograms is sufficient to provide necessary contrast for material distinguishability.…”

Section: Discussionmentioning

confidence: 95%

Simultaneous multimaterial operando tomography of electrochemical devices

Shrestha,

LaManna,

Fahy

et al. 2023

Sci. Adv.

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The performance of electrochemical energy devices, such as fuel cells and batteries, is dictated by intricate physiochemical processes within. To better understand and rationally engineer these processes, we need robust operando characterization tools that detect and distinguish multiple interacting components/interfaces in high contrast. Here, we uniquely combine dual-modality tomography (simultaneous neutron and x-ray tomography) and advanced image processing (iterative reconstruction and metal artifact reduction) for high-contrast multimaterial imaging, with signal and contrast enhancements of up to 10 and 48 times, respectively, compared to conventional single-modality imaging. Targeted development and application of these methods to electrochemical devices allow us to resolve operando distributions of six interacting fuel cell components (including void space) with the highest reported pairwise contrast for simultaneous yet decoupled spatiotemporal characterization of component morphology and hydration. Such high-contrast tomography ushers in key gold standards for operando electrochemical characterization, with broader applicability to numerous multimaterial systems.

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Section: Discussionmentioning

confidence: 95%

Simultaneous multimaterial operando tomography of electrochemical devices

Shrestha,

LaManna,

Fahy

et al. 2023

Sci. Adv.

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“…However, with the development of a high-resolution setup that allows pixel sizes down to 1.5 μm, detail can now be resolved down to length scales of 4 μm. [41,42]…”

Section: Methodsmentioning

confidence: 99%

Visualizing Lithium Ion Transport in Solid‐State Li–S Batteries Using ⁶Li Contrast Enhanced Neutron Imaging

Bradbury

Kardjilov

Dewald

et al. 2023

Adv Funct Materials

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The elucidation of lithium ion transport pathways through a solid electrolyte separator is a vital step toward development of reliable, functional all‐solid‐state batteries. Here, advantage has been taken of the significantly higher neutron attenuation coefficient of one of the most abundant stable isotopes of lithium, 6Li, with respect to that of naturally occurring lithium isotope mixture, to perform neutron imaging on a purpose built all‐solid‐state lithium–sulfur battery. Increasing the 6Li content in the anode while using natural lithium in the solid electrolyte separator and the cathode enhances the contrast such that it is possible to differentiate, during the initial discharge, between the mobile lithium ions diffusing through the cell from the anode and those that are initially located in the solid electrolyte. The sensitivity of neutrons to the different lithium isotopes means that operando neutron radiography allows demonstration of the lithium ion diffusion through the cell while in situ neutron tomography has permitted presentation, in three dimensions, of the distribution of the trapped lithium ions inside the cell in charged and discharged states.

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“…The efficiency of the scintillator plays a role here since it converts the attenuated neutron intensity to visible light, but the requirements are contradictory for high temporal or spatial resolution, respectively. A thinner scintillator with a low light output is usually applied for high spatial resolution because it can catch as many photons as possible with sensitive optics and camera (Tengattini et al., 2022). By contrast, a thicker scintillator is typically chosen for high temporal resolution because it can catch more neutrons and brings higher luminosity to the images (but also with more diffuseness).…”

Section: Limitations Of Neutron Imaging Techniquesmentioning

confidence: 99%

Quantification of root water uptake and redistribution using neutron imaging: a review and future directions

et al. 2022

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SUMMARY Quantifying root water uptake is essential to understanding plant water use and responses to different environmental conditions. However, non‐destructive measurement of water transport and related hydraulics in the soil–root system remains a challenge. Neutron imaging, with its high sensitivity to hydrogen, has become an unparalleled tool to visualize and quantify root water uptake in vivo. In combination with isotopes (e.g., deuterated water) and a diffusion–convection model, root water uptake and hydraulic redistribution in root and soil can be quantified. Here, we review recent advances in utilizing neutron imaging to visualize and quantify root water uptake, hydraulic redistribution in roots and soil, and root hydraulic properties of different plant species. Under uniform soil moisture distributions, neutron radiographic studies have shown that water uptake was not uniform along the root and depended on both root type and age. For both tap (e.g., lupine [Lupinus albus L.]) and fibrous (e.g., maize [Zea mays L.]) root systems, water was mainly taken up through lateral roots. In mature maize, the location of water uptake shifted from seminal roots and their laterals to crown/nodal roots and their laterals. Under non‐uniform soil moisture distributions, part of the water taken up during the daytime maintained the growth of crown/nodal roots in the upper, drier soil layers. Ultra‐fast neutron tomography provides new insights into 3D water movement in soil and roots. We discuss the limitations of using neutron imaging and propose future directions to utilize neutron imaging to advance our understanding of root water uptake and soil–root interactions.

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Compact and versatile neutron imaging detector with sub-4μm spatial resolution based on a single-crystal thin-film scintillator

Cited by 9 publications

References 45 publications

Simultaneous multimaterial operando tomography of electrochemical devices

Simultaneous multimaterial operando tomography of electrochemical devices

Visualizing Lithium Ion Transport in Solid‐State Li–S Batteries Using ⁶Li Contrast Enhanced Neutron Imaging

Quantification of root water uptake and redistribution using neutron imaging: a review and future directions

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Compact and versatile neutron imaging detector with sub-4μm spatial resolution based on a single-crystal thin-film scintillator

Cited by 9 publications

References 45 publications

Simultaneous multimaterial operando tomography of electrochemical devices

Simultaneous multimaterial operando tomography of electrochemical devices

Visualizing Lithium Ion Transport in Solid‐State Li–S Batteries Using 6Li Contrast Enhanced Neutron Imaging

Quantification of root water uptake and redistribution using neutron imaging: a review and future directions

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Visualizing Lithium Ion Transport in Solid‐State Li–S Batteries Using ⁶Li Contrast Enhanced Neutron Imaging