ArticleNano letters2023
Mid-Infrared Mapping of Four-Layer Graphene Polytypes Using Near-Field Microscopy.
Article in Nano letters, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Direction-resolved nanoscale optical imaging with near-nanometer resolution by emerging infrared torsional force microscopy.Nature communications · 2026Article
- Imaging Electric Polarization Switching in Multilayer Graphene.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Switching graphitic polytypes in elastically coupled cavities.Nature nanotechnology · 2026Article
- Polytypes and planar defects revealed in the purine base xanthine using multi-dimensional electron diffraction.Communications chemistry · 2025Article
- Detecting the Six Polytypes of Five-Layer Graphite.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Metal-Semiconductor Behavior along the Line of Stacking Order Change in Gated Multilayer Graphene.Materials (Basel, Switzerland) · 2024Article
- Probing Polymorphic Stacking Domains in Mechanically Exfoliated Two-Dimensional Nanosheets Using Atomic Force Microscopy and Ultralow-Frequency Raman Spectroscopy.Nanomaterials (Basel, Switzerland) · 2024Article
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The mid-infrared (MIR) spectral region attracts attention for accurate chemical analysis using photonic devices. Few-layer graphene (FLG) polytypes are promising platforms, due to their broad absorption in this range and gate-tunable optical properties. Among these polytypes, the noncentrosymmetric ABCB/ACAB structure is particularly interesting, due to its intrinsic bandgap (8.8 meV) and internal polarization. In this study, we utilize scattering-scanning near-field microscopy to measure the optical response of all three tetralayer graphene polytypes in the 8.5-11.5 μm range. We employ a finite dipole model to compare these results to the calculated optical conductivity for each polytype obtained from a tight-binding model. Our findings reveal a significant discrepancy in the MIR optical conductivity response of graphene between the different polytypes than what the tight-binding model suggests. This observation implies an increased potential for utilizing the distinct tetralayer polytypes in photonic devices operating within the MIR range for chemical sensing and infrared imaging.
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