Journal article
Collective Phonon-Polaritonic Modes in Silicon Carbide Subarrays
ACS nano, Vol.16(1), pp.963-973
01/25/2022
DOI: 10.1021/acsnano.1c08557
PMID: 34957830
Abstract
Localized surface phonon polaritons (LSPhPs) can be implemented to engineer light-matter interactions through nanoscale patterning for a range of midinfrared application spaces. However, the polar material systems studied to date have mainly focused on simple designs featuring a single element in the periodic unit cell. Increasing the complexity of the unit cell can serve to modify the resonant near-fields and intra- and inter-unit-cell coupling as well as to dictate spectral tuning in the far-field. In this work, we exploit more complicated unit-cell structures to realize LSPhP modes with additional degrees of design freedom, which are largely unexplored. Collectively excited LSPhP modes with distinctly symmetric and antisymmetric near-fields are supported in these subarray designs, which are based on nanopillars that are scaled by the number of subarray elements to ensure a constant unit-cell size. Moreover, we observe an anomalous mode-matching of the collective symmetric mode in our fabricated subarrays that is robust to changing numbers of pillars within the subarrays as well as to defects intentionally introduced in the form of missing pillars. This work therefore illustrates the hierarchical design of tailored LSPhP resonances and modal near-field profiles simultaneously for a variety of IR applications such as surface-enhanced spectroscopies and biochemical sensing.
Details
- Title: Subtitle
- Collective Phonon-Polaritonic Modes in Silicon Carbide Subarrays
- Creators
- Guanyu Lu - Vanderbilt UniversityChristopher R. Gubbin - University of SouthamptonJ. Ryan Nolen - Vanderbilt UniversityThomas G. Folland - University of IowaKatja Diaz-Granados - Vanderbilt UniversityIvan I. Kravchenko - Oak Ridge National LaboratoryJoseph A. Spencer - Us Naval Res Lab, Washington, DC 20375 USAMarko J. Tadjer - United States Naval Research LaboratoryOrest J. Glembocki - Vanderbilt UniversitySimone De Liberato - University of SouthamptonJoshua D. Caldwell - Vanderbilt University
- Resource Type
- Journal article
- Publication Details
- ACS nano, Vol.16(1), pp.963-973
- DOI
- 10.1021/acsnano.1c08557
- PMID
- 34957830
- NLM abbreviation
- ACS Nano
- ISSN
- 1936-0851
- eISSN
- 1936-086X
- Publisher
- Amer Chemical Soc
- Number of pages
- 11
- Grant note
- N00014-18-12107 / Office of Naval Research 2014798 / Dir for Tech, Innovation, & Partnerships; Translational Impacts; National Science Foundation (NSF); NSF - Directorate for Technology, Innovation and Partnerships (TIP); NSF - Translational Impacts RGF \EA\181001 / Royal Society Office of Naval Research RPG-2019-174 / Leverhulme Trust URF\R\180002 / Royal Society Research fellowship; Royal Society Philip Leverhulme prize 2014798 / STTR program by the National Science Foundation, Division of Industrial Innovation and Partnerships (IIP)
- Language
- English
- Date published
- 01/25/2022
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429038102771
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