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Free-standing graphene oxide mid-infrared polarizers

  • Zheng, Xiaorui Centre for Translational Atomaterials - Swinburne University of Technology - Hawthorn 3122 - Australia
  • Xu, Bing University of Fribourg - Department of Physics and Fribourg Center for Nanomaterials - CH-1700 Fribourg - Switzerland
  • Li, Shuo Centre for Translational Atomaterials - Swinburne University of Technology - Hawthorn 3122 - Australia
  • Lin, Han Centre for Translational Atomaterials - Swinburne University of Technology - Hawthorn 3122 - Australia
  • Qiu, Ling Shenzhen Geim Graphene Center - Tsinghua-Berkeley Shenzhen Institute - Tsinghua University - Shenzhen 518055 - P. R. China
  • Li, Dan Department of Chemical Engineering - The University of Melbourne - VIC 3010 - Australia
  • Jia, Baohua Centre for Translational Atomaterials - Swinburne University of Technology - Hawthorn 3122 - Australia
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    04.05.2020
Published in:
  • Nanoscale. - 2020, vol. 12, no. 21, p. 11480–11488
English Mid-infrared (MIR) represents a crucial spectral region for applications in spectroscopy, sensing, imaging, security and industry screening, owing to the strong characteristic vibrational transitions of many important molecules. However, the current MIR compatible materials are fragile, hazardous, and costly, which hampers the performance of MIR devices. Here, we developed a versatile transmittance-based Kramers–Kronig method and obtained the optical properties of graphene oxide in the MIR region, unveiling its application potentials as a novel MIR compatible material. As an example, we demonstrated free-standing graphene oxide MIR polarizers with large extinction ratio (∼20 dB) and controllable working wavelength up to 25 μm, by using the low-cost and flexible direct laser writing technique. Our transmittance-based KK method offers a versatile approach to obtain the optical properties of novel atomic- scale low-dimensional materials in the less developed MIR region and opens up opportunities in high performing functional MIR devices.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/308738
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