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Design of Multimodal Absorption in the Mid-IR : A Metal Dielectric Metal Approach

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005238
URN to cite this document: urn:nbn:de:bvb:703-epub-5238-9

Title data

Pech-May, Nelson W. ; Lauster, Tobias ; Retsch, Markus:
Design of Multimodal Absorption in the Mid-IR : A Metal Dielectric Metal Approach.
In: ACS Applied Materials & Interfaces. Vol. 13 (4 January 2021) Issue 1 . - pp. 1921-1929.
ISSN 1944-8252
DOI der Verlagsversion: https://doi.org/10.1021/acsami.0c18160

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Abstract

Specific control on the mid-infrared (mid-IR) emission properties is attracting increasing attention for thermal camouflage and passive cooling applications. Metal–dielectric–metal (MDM) structures are well known to support strong magnetic polariton resonances in the optical and near-infrared range. We extend the current understanding of such an MDM structure by specifically designing Au disc arrays on top of ZnS–Au–Si substrates and pushing their resonances to the mid-IR regime. Therefore, we combine fabrication via lift-off photolithography with the finite element method and an inductance–capacitance model. With this combination of techniques, we demonstrate that the magnetic polariton resonance of the first order strongly depends on the individual disc diameter. Furthermore, the fabrication of multiple discs within one unit cell allows a linear combination of the fundamental resonances to conceive broadband absorptance. Quite importantly, even in mixed resonator cases, the absorptance spectra can be fully described by a superposition of the individual disc properties. Our contribution provides rational guidance to deterministically design mid-IR emitting materials with specific narrow- or broadband properties.

Further data

Item Type: Article in a journal
Keywords: metal−dielectric−metal periodic structures; mid-IR absorption; magnetic polariton absorption; multimodal absorption; broadband absorption; thermal emission; radiative cooling; microfabrication
DDC Subjects: 500 Science > 540 Chemistry
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry I
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions > Research Centres > Bayreuth Institute of Macromolecular Research - BIMF
Research Institutions > Research Centres > Bayreuth Center for Colloids and Interfaces - BZKG
Research Institutions > EU Research Projects > VISIRday
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > EU Research Projects
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5238-9
Date Deposited: 08 Jul 2021 06:30
Last Modified: 08 Jul 2021 06:41
URI: https://epub.uni-bayreuth.de/id/eprint/5238

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