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Hydrogen sensor based on one-dimension Ag@Pd nanoparticle chain.

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Title: Hydrogen sensor based on one-dimension Ag@Pd nanoparticle chain.
Authors: Ruan, Dawei1 (AUTHOR), Wang, Xuguang1 (AUTHOR), Ou, Weimin1 (AUTHOR), Wang, Song2 (AUTHOR), Wang, Chen2 (AUTHOR), Zhao, Guoan3 (AUTHOR), Wei, Xiaotao4 (AUTHOR), Song, Gang1 (AUTHOR) sg2010@bupt.edu.cn
Source: Journal of Nanoparticle Research. Feb2026, Vol. 28 Issue 2, p1-8. 8p.
Subjects: Palladium, Absorption cross sections, Surface plasmon resonance, Surface plasmons, Silver nanoparticles, Hydrogen detectors, Spectral sensitivity
Abstract: We investigate theoretically a hydrogen sensor based on a one-dimensional core–shell nanoparticle chain. The nanoparticles are composed of silver cores coated with palladium (Pd) shells. The distance between adjacent particles is larger than three times the unit radius. This configuration allows for the analysis of the optical response of the designed structure using both coupled dipole theory (CD) and the finite-difference time-domain (FDTD) method. Leveraging the change in the dielectric constant of Pd before and after hydrogen absorption, combined with the collective effects of surface plasmons, the presence of H2 is detected through differences in the absorption cross-sections. Results show that by constructing nanoparticle chain models with varying periods or particle sizes, Wood's anomaly and ultra-narrow absorption cross-sections are observed both before and after H2 absorption. Furthermore, the difference in the absorption cross-sections still exhibits Wood's anomaly and ultra-narrow absorption cross-sections. These effects are attributed to the long-range interactions between individual and collective interactions within the unit structures, which can be directly predicted by CD theory. The maximum of the difference absorption cross-sections would be reach to 16.7% when the concentrate of H2 changes 4%. The occurrence of Wood's anomaly and ultra-narrow absorption peaks in the absorption spectral difference can effectively indicate the presence of hydrogen in the structure, thereby reflecting the characteristics of hydrogen sensing from another perspective. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Nanoparticle Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 192011935
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Hydrogen sensor based on one-dimension Ag@Pd nanoparticle chain.
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  Data: <searchLink fieldCode="AR" term="%22Ruan%2C+Dawei%22">Ruan, Dawei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuguang%22">Wang, Xuguang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ou%2C+Weimin%22">Ou, Weimin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Song%22">Wang, Song</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Chen%22">Wang, Chen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Guoan%22">Zhao, Guoan</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Xiaotao%22">Wei, Xiaotao</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Gang%22">Song, Gang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sg2010@bupt.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Nanoparticle+Research%22">Journal of Nanoparticle Research</searchLink>. Feb2026, Vol. 28 Issue 2, p1-8. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Palladium%22">Palladium</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+cross+sections%22">Absorption cross sections</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+plasmon+resonance%22">Surface plasmon resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+plasmons%22">Surface plasmons</searchLink><br /><searchLink fieldCode="DE" term="%22Silver+nanoparticles%22">Silver nanoparticles</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+detectors%22">Hydrogen detectors</searchLink><br /><searchLink fieldCode="DE" term="%22Spectral+sensitivity%22">Spectral sensitivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We investigate theoretically a hydrogen sensor based on a one-dimensional core–shell nanoparticle chain. The nanoparticles are composed of silver cores coated with palladium (Pd) shells. The distance between adjacent particles is larger than three times the unit radius. This configuration allows for the analysis of the optical response of the designed structure using both coupled dipole theory (CD) and the finite-difference time-domain (FDTD) method. Leveraging the change in the dielectric constant of Pd before and after hydrogen absorption, combined with the collective effects of surface plasmons, the presence of H2 is detected through differences in the absorption cross-sections. Results show that by constructing nanoparticle chain models with varying periods or particle sizes, Wood's anomaly and ultra-narrow absorption cross-sections are observed both before and after H2 absorption. Furthermore, the difference in the absorption cross-sections still exhibits Wood's anomaly and ultra-narrow absorption cross-sections. These effects are attributed to the long-range interactions between individual and collective interactions within the unit structures, which can be directly predicted by CD theory. The maximum of the difference absorption cross-sections would be reach to 16.7% when the concentrate of H2 changes 4%. The occurrence of Wood's anomaly and ultra-narrow absorption peaks in the absorption spectral difference can effectively indicate the presence of hydrogen in the structure, thereby reflecting the characteristics of hydrogen sensing from another perspective. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Nanoparticle Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s11051-026-06570-9
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 1
    Subjects:
      – SubjectFull: Palladium
        Type: general
      – SubjectFull: Absorption cross sections
        Type: general
      – SubjectFull: Surface plasmon resonance
        Type: general
      – SubjectFull: Surface plasmons
        Type: general
      – SubjectFull: Silver nanoparticles
        Type: general
      – SubjectFull: Hydrogen detectors
        Type: general
      – SubjectFull: Spectral sensitivity
        Type: general
    Titles:
      – TitleFull: Hydrogen sensor based on one-dimension Ag@Pd nanoparticle chain.
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            NameFull: Ruan, Dawei
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            NameFull: Wang, Xuguang
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            NameFull: Wang, Song
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 13880764
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              Value: 28
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            – TitleFull: Journal of Nanoparticle Research
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