Journal
ACS NANO
Volume 16, Issue 2, Pages 3027-3035Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c10489
Keywords
nanophotonics; polaritonics; nanoresonators; van der Waals materials; near-field optical microscopy; infrared nanospectroscopy
Categories
Funding
- National Science Foundation (NSF) [1804224]
- Air Force Office of Scientific Research (AFOSR) Multidisciplinary University Research Initiative (MURI) [FA9550-16-1-0031]
- AFOSR [FA9550-18-1-0070]
- Packard Fellowship Foundation
- Department of Energy (DOE) Photonics at Thermodynamic Limits Energy Frontier Research Center [DE-SC0019140]
- NSF EFRI-DCheM program [SUB0000425]
- Department of Defense
- Advanced Light Source, a U.S. DOE Office of Science User Facility [DE-AC02-05CH11231]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1804224] Funding Source: National Science Foundation
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This study introduces bottom-up-synthesized alpha-MoO3 structures as nanoscale phonon polaritonic systems that feature tailorable morphologies and crystal qualities consistent with bulk single crystals. Alpha-MoO3 nanoribbons serve as low-loss hyperbolic Fabry-Perot nanoresonators, showcasing high-performance and low-loss capabilities for infrared optical and optoelectronic applications.
van der Waals nanomaterials supporting phonon polariton quasiparticles possess extraordinary light confinement capabilities, making them ideal systems for molecular sensing, thermal emission, and subwavelength imaging applications, but they require defect-free crystallinity and nanostructured form factors to fully showcase these capabilities. We introduce bottom-up-synthesized alpha-MoO3 structures as nanoscale phonon polaritonic systems that feature tailorable morphologies and crystal qualities consistent with bulk single crystals. alpha-MoO3 nanoribbons serve as low-loss hyperbolic Fabry-Perot nanoresonators, and we experimentally map hyperbolic resonances over four Reststrahlen bands spanning the far- and mid-infrared spectral range, including resonance modes beyond the 10th order. The measured quality factors are the highest from phonon polaritonic van der Waals structures to date. We anticipate that bottom-up-synthesized polaritonic van der Waals nanostructures will serve as an enabling high-performance and low-loss platform for infrared optical and optoelectronic applications.
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