Engineering Canalized Near-Field Radiative Heat Transfer between Fixed Nanoparticles with Twisted α-MoO3 Trilayers
Abstract
Canalized phonon polaritons in twisted van der Waals crystals offer a route to control nanoscale thermal energy flow. Building on the established twisted α-MoO3 trilayer platform, we examine how internal twist angles modify near-field radiative heat transfer (NFRHT) between a prescribed nanoparticle pair while both the nanoparticle axis and the bottom-layer crystallographic orientation remain fixed. Under this constraint and at equal total α-MoO3 thickness, the optimized trilayer reaches 2.84 times the bilayer maximum radiative power, while its mean power over the sampled internal twist configurations is 1.51 times the bilayer value. The second internal twist coordinate also enlarges the set of configurations supporting strong transfer, with local angular tolerance when either internal angle is varied separately. Momentum-space Green-tensor diagnostics and real-space energy-density maps associate the enhancement with stronger receiver-directed scattering and improved channel alignment. Selected trilayer configurations retain enhanced coupling across the sampled family of nanoparticle resonances and at long distances. These results quantify the additional internal configurational freedom available for engineering radiative heat transfer under a fixed laboratory-frame geometry.
Versions
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BibTeX
@misc{hu2026engineering,
title = {{Engineering Canalized Near-Field Radiative Heat Transfer between Fixed Nanoparticles with Twisted $α$-MoO$_3$ Trilayers}},
author = {Yang Hu and Pablo Alonso-González},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.38583},
eprint = {2610.38583},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.38583},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - Engineering Canalized Near-Field Radiative Heat Transfer between Fixed Nanoparticles with Twisted α-MoO_3 Trilayers
AU - Yang Hu
AU - Pablo Alonso-González
PY - 2026
DA - 2026/10/28
PB - arXiv
DO - 10.48550/arxiv.2610.38583
UR - https://arxiv.org/abs/2610.38583
AB - Canalized phonon polaritons in twisted van der Waals crystals offer a route to control nanoscale thermal energy flow. Building on the established twisted α-MoO_3 trilayer platform, we examine how internal twist angles modify near-field radiative heat transfer (NFRHT) between a prescribed nanoparticle pair while both the nanoparticle axis and the bottom-layer crystallographic orientation remain fixed. Under this constraint and at equal total α-MoO_3 thickness, the optimized trilayer reaches 2.84 times the bilayer maximum radiative power, while its mean power over the sampled internal twist configurations is 1.51 times the bilayer value. The second internal twist coordinate also enlarges the set of configurations supporting strong transfer, with local angular tolerance when either internal angle is varied separately. Momentum-space Green-tensor diagnostics and real-space energy-density maps associate the enhancement with stronger receiver-directed scattering and improved channel alignment. Selected trilayer configurations retain enhanced coupling across the sampled family of nanoparticle resonances and at long distances. These results quantify the additional internal configurational freedom available for engineering radiative heat transfer under a fixed laboratory-frame geometry.
ER -