Journal article
Narrowband Polaritonic Thermal Emitters Driven by Waste Heat
ACS omega, Vol.5(19), pp.10900-10908
05/19/2020
DOI: 10.1021/acsomega.0c00600
PMCID: PMC7241014
PMID: 32455210
Abstract
There are a broad range of applications for narrowband long-wave infrared (LWIR) sources, especially within the 8–12 μm atmospheric window. These include infrared beacons, free-space communications, spectroscopy, and potentially on-chip photonics. Unfortunately, commercial light-emitting diode (LED) sources are not available within the LWIR, leaving only gas-phase and quantum cascade lasers, which exhibit low wall-plug efficiencies and in many cases require large footprints, precluding their use for many applications. Recent advances in nanophotonics have demonstrated the potential for tailoring thermal emission into an LED-like response, featuring narrowband, polarized thermal emitters. In this work, we demonstrate that such nanophotonic IR emitting metamaterials (NIREMs), featuring near-unity absorption, can serve as LWIR sources with effectively no net power consumption, enabling their operation entirely by waste heat from conventional electronics. Using experimental emissivity spectra from a SiC NIREM device in concert with a thermodynamic compact model, we verify this feasibility for two test cases: a NIREM device driven by waste heat from a CPU heat sink and one operating using a low-power resistive heater for elevated temperature operation. To validate these calculations, we experimentally determine the temperature-dependent NIREM irradiance and the angular radiation pattern. We purport that these results provide a first proof-of-concept for waste heat-driven thermal emitters potentially employable in a variety of infrared application spaces.
Details
- Title: Subtitle
- Narrowband Polaritonic Thermal Emitters Driven by Waste Heat
- Creators
- Guanyu Lu - Vanderbilt UniversityJoshua Ryan Nolen - Vanderbilt UniversityThomas G Folland - Vanderbilt UniversityMarko J Tadjer - United States Naval Research LaboratoryDon Greg Walker - Vanderbilt UniversityJoshua D Caldwell - Vanderbilt University
- Resource Type
- Journal article
- Publication Details
- ACS omega, Vol.5(19), pp.10900-10908
- Publisher
- American Chemical Society
- DOI
- 10.1021/acsomega.0c00600
- PMID
- 32455210
- PMCID
- PMC7241014
- ISSN
- 2470-1343
- eISSN
- 2470-1343
- Grant note
- DOI: 10.13039/100006537, name: Vanderbilt University; DOI: 10.13039/100000183, name: Army Research Office, award: W911NF1810392; DOI: 10.13039/100000006, name: Office of Naval Research, award: N00014-18-1-2107
- Language
- English
- Date published
- 05/19/2020
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428779902771
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