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Resonant neutron reflectometry for hydrogen detection.

ABSTRACT: The detection and quantification of hydrogen is becoming increasingly important in research on electronic materials and devices, following the identification of the hydrogen content as a potent control parameter for the electronic properties. However, establishing quantitative correlations between the hydrogen content and the physical properties of solids remains a formidable challenge. Here we report neutron reflectometry experiments on 50 nm thick niobium films during hydrogen loading, and show that the momentum-space position of a prominent waveguide resonance allows tracking of the absolute hydrogen content with an accuracy of about one atomic percent on a timescale of less than a minute. Resonance-enhanced neutron reflectometry thus allows fast, direct, and non-destructive measurements of the hydrogen concentration in thin-film structures, with sensitivity high enough for real-time in-situ studies.

SUBMITTER: Guasco L

PROVIDER: S-EPMC8933405 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature

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Resonant neutron reflectometry for hydrogen detection.

Guasco L L Khaydukov Yu N YN Pütter S S Silvi L L Paulin M A MA Keller T T Keimer B B

Nature communications 20220318 1

The detection and quantification of hydrogen is becoming increasingly important in research on electronic materials and devices, following the identification of the hydrogen content as a potent control parameter for the electronic properties. However, establishing quantitative correlations between the hydrogen content and the physical properties of solids remains a formidable challenge. Here we report neutron reflectometry experiments on 50 nm thick niobium films during hydrogen loading, and sho ...[more]

PMID: 35304444

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