167 citations · 832 across the 27 of their papers we have counts for
27 papers
Radiation conduction in polaritonic nanowires
Livia C. McCormack, Mathieu Francoeur
Phonon polaritons have attracted increasing interest as a means to offset the reduction in phonon thermal conductivity in nanostructures caused by enhanced boundary scattering. How…
Impacts of thermal aging and associated heat losses on the performance of a Pyromark 2500-coated concentrated solar power central receiver
Katie Bezdjian, Mathieu Francoeur
Pyromark 2500 is a widely used coating for concentrated solar power central receiver systems due to its high absorptivity, ease in application, and relatively low cost. Pyromark's…
Near-field thermal emission from metasurfaces constructed of SiC ellipsoidal particles
Lindsay P. Walter, Joseph C. McKay, Bart Raeymaekers +1
We model near-field thermal emission from metasurfaces structured as two-dimensional arrays of ellipsoidal SiC particles. The modeling approach is developed from fluctuational elec…
Orientation effects on near-field radiative heat transfer between complex-shaped dielectric particles
Lindsay P. Walter, Mathieu Francoeur
The effect of orientation on near-field radiative heat transfer between two complex-shaped superellipsoid particles of SiO2 is presented. The particles under study are 50 nm in rad…
Near-field radiative heat transfer between irregularly shaped dielectric particles modeled with the discrete system Green's function method
Lindsay P. Walter, Eric J. Tervo, Mathieu Francoeur
Near-field radiative heat transfer (NFRHT) between irregularly shaped dielectric particles made of SiO2 and morphology characterized by Gaussian random spheres is studied. Particle…
First-principles calculations of phonon transport across a vacuum gap
Takuro Tokunaga, Masao Arai, Kazuaki Kobayashi +5
Phonon transport across a vacuum gap separating intrinsic silicon crystals is predicted via the atomistic Green's function method combined with first-principles calculations of all…
Extreme Near-Field Heat Transfer Between Gold Surfaces
Takuro Tokunaga, Amun Jarzembski, Takuma Shiga +2
Extreme near-field heat transfer between metallic surfaces is a subject of debate as the state-of-the-art theory and experiments are in disagreement on the energy carriers driving…
Revisiting the Figure of Merit of Concentrated Solar Power Receivers
A. N. M. Taufiq Elahi, Riley Crist, Vahid Hatamipour +3
The figure of merit (FOM) is a widely used metric to characterize the performance of concentrated solar power (CSP) receivers by comparing the amount of solar thermal energy retain…
A three-dimensional thermal model of the human cochlea for magnetic cochlear implant surgery
Fateme Esmailie, Mathieu Francoeur, Tim Ameel
In traditional cochlear implant surgery, physical trauma may occur during electrode array insertion. Magnetic guidance of the electrode array has been proposed to mitigate this med…
Experimental validation of a three-dimensional heat transfer model within the scala tympani with application to magnetic cochlear implant surgery
Fateme Esmailie, Mathieu Francoeur, Tim Ameel
Magnetic guidance of cochlear implants is a promising technique to reduce the risk of physical trauma during surgery. In this approach, a magnet attached to the tip of the implant…
Near-field radiative heat transfer between dissimilar materials mediated by coupled surface phonon- and plasmon-polaritons
Lei Tang, John DeSutter, Mathieu Francoeur
Near-field radiative heat transfer (NFRHT) between dissimilar materials supporting surface polaritons in the infrared is of critical importance for applications such as photonic th…
Spatial correlation of the thermally generated electromagnetic field in layered media
Vahid Hatamipour, Mathieu Francoeur
A general formulation for the cross-spectral density tensor enabling calculation of the spatial correlation of the thermally generated electromagnetic field in layered media is der…
Design of an indium arsenide cell for near-field thermophotovoltaic devices
Daniel Milovich, Juan Villa, Elisa Antolin +4
An indium arsenide photovoltaic cell with gold front contacts is designed for use in a near-field thermophotovoltaic (NF-TPV) device consisting of millimeter-size surfaces separate…
Heat transfer analysis in an uncoiled model of the cochlea during magnetic cochlear implant surgery
Fateme Esmailie, Mathieu Francoeur, Tim Ameel
Magnetic cochlear implant surgery requires removal of a magnet via a heating process after implant insertion, which may cause thermal trauma within the ear. Intra-cochlear heat tra…
Thermal radiation in systems of many dipoles
Eric J. Tervo, Mathieu Francoeur, Baratunde A. Cola +1
Systems of many nanoparticles or volume-discretized bodies exhibit collective radiative properties that could be used for enhanced, guided, or tunable thermal radiation. These are…
Role of Acoustic Phonon Transport in Near- to Asperity-Contact Heat Transfer
Amun Jarzembski, Takuro Tokunaga, Jacob Crossley +6
Acoustic phonon transport is revealed as a potential radiation-to-conduction transition mechanism for single-digit nanometer vacuum gaps. To show this, we measure heat transfer fro…
A near-field radiative heat transfer device
John DeSutter, Lei Tang, Mathieu Francoeur
Recently, many works have experimentally demonstrated near-field radiative heat transfer (NFRHT) exceeding the far-field blackbody limit between planar surfaces. Due to the difficu…
Spectral redshift of the thermal near field scattered by a probe
Sheila Edalatpour, Vahid Hatamipour, Mathieu Francoeur
The physics underlying spectral redshift of thermally generated surface phonon-polaritons (SPhPs) observed in near-field thermal spectroscopy is investigated. Numerically exact flu…
Apparent spectral shift of thermally generated surface phonon-polariton resonance mediated by a non-resonant film
Vahid Hatamipour, Sheila Edalatpour, Mathieu Francoeur
The physical origin of spectral shift of thermally generated surface phonon-polariton (SPhP) resonance of a silicon carbide (SiC) bulk mediated by a non-resonant film is elucidated…
Photonic thermal diode enabled by surface polariton coupling in nanostructures
Lei Tang, Mathieu Francoeur
A novel photonic thermal diode concept operating in the near field and capitalizing on the temperature-dependence of coupled surface polariton modes in nanostructures is proposed.…
External luminescence and photon recycling in near-field thermophotovoltaics
John DeSutter, Rodolphe Vaillon, Mathieu Francoeur
The importance of considering near-field effects on photon recycling and spontaneous emission in a thermophotovoltaic device is investigated. Fluctuational electrodynamics is used…
Near-field radiative heat transfer between arbitrarily-shaped objects and a surface
Sheila Edalatpour, Mathieu Francoeur
A fluctuational electrodynamics-based formalism for calculating near-field radiative heat transfer between objects of arbitrary size and shape and an infinite surface is presented.…
Near-field thermal electromagnetic transport: An overview
Sheila Edalatpour, John DeSutter, Mathieu Francoeur
A general near-field thermal electromagnetic transport formalism that is independent of the size, shape and number of heat sources is derived. The formalism is based on fluctuation…
Determination of thermal emission spectra maximizing thermophotovoltaic performance using a genetic algorithm
John DeSutter, Michael P. Bernardi, Mathieu Francoeur
Optimal radiator thermal emission spectra maximizing thermophotovoltaic (TPV) conversion efficiency and output power density are determined when temperature effects in the cell are…