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Chiral Plasmonic Hydrogen Sensors

2018

Article

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Abstract In this article, a chiral plasmonic hydrogen‐sensing platform using palladium‐based nanohelices is demonstrated. Such 3D chiral nanostructures fabricated by nanoglancing angle deposition exhibit strong circular dichroism both experimentally and theoretically. The chiroptical properties of the palladium nanohelices are altered upon hydrogen uptake and sensitively depend on the hydrogen concentration. Such properties are well suited for remote and spark‐free hydrogen sensing in the flammable range. Hysteresis is reduced, when an increasing amount of gold is utilized in the palladium‐gold hybrid helices. As a result, the linearity of the circular dichroism in response to hydrogen is significantly improved. The chiral plasmonic sensor scheme is of potential interest for hydrogen‐sensing applications, where good linearity and high sensitivity are required.

Author(s): Matuschek, Marcus and Singh, Dhruv Pratap and Hyeon-Ho, Jeong and Nesterov, Maxim and Weiss, Thomas and Fischer, Peer and Neubrech, Frank and Na Liu, Laura
Journal: Small
Volume: 14
Number (issue): 7
Pages: 1702990
Year: 2018
Month: Febuary
Day: 15

Department(s): Micro, Nano, and Molecular Systems
Bibtex Type: Article (article)

Annote: Feature Cover Article
DOI: 10.1002/smll.201702990
Eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1002/smll.201702990
URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201702990

BibTex

@article{doi:10.1002/smll.201702990,
  title = {Chiral Plasmonic Hydrogen Sensors},
  author = {Matuschek, Marcus and Singh, Dhruv Pratap and Hyeon-Ho, Jeong and Nesterov, Maxim and Weiss, Thomas and Fischer, Peer and Neubrech, Frank and Na Liu, Laura},
  journal = {Small},
  volume = {14},
  number = {7},
  pages = {1702990},
  month = feb,
  year = {2018},
  annote = {Feature Cover Article},
  eprint = {https://onlinelibrary.wiley.com/doi/pdf/10.1002/smll.201702990},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201702990},
  month_numeric = {2}
}