Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Park, Keunhan"'
In this article, we present a cost-effective approach to the precision measurement of heat flux using commercial thermoelectric modules (TEMs). Two different methods of measuring heat flux with TEMs are investigated, namely passive mode based on the
Externí odkaz:
http://arxiv.org/abs/2208.04265
Publikováno v:
In Ultramicroscopy December 2024 267
Autor:
Tokunaga, Takuro, Arai, Masao, Kobayashi, Kazuaki, Hayami, Wataru, Suehara, Shigeru, Shiga, Takuma, Park, Keunhan, Francoeur, Mathieu
Publikováno v:
Physical Review B 105, 045410, 2022
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 interatomic force constants. The overlap of electron wave functions i
Externí odkaz:
http://arxiv.org/abs/2110.14050
Publikováno v:
Physical Review B 104, 125404, 2021
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 heat transport. In an effort to elucidate the physics of extreme near-
Externí odkaz:
http://arxiv.org/abs/2102.04575
Autor:
Elahi, A. N. M. Taufiq, Crist, Riley, Hatamipour, Vahid, Francoeur, Mathieu, Rao, Sameer, Park, Keunhan
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 retained by the receiver to the incident concentrated solar radiation. Howev
Externí odkaz:
http://arxiv.org/abs/2012.02841
Publikováno v:
Sol. Energy Mater. Sol. Cells 226 (2021) 111067
The present article reports a comprehensive energy balance analysis of a photon-enhanced thermionic emission (PETE) device when it is used for concentrated solar power (CSP) generation. To this end, we consider a realistic PETE device composed of a b
Externí odkaz:
http://arxiv.org/abs/2011.12909
Publikováno v:
In Solar Energy Materials and Solar Cells 1 August 2023 257
Publikováno v:
Phys. Rev. Applied 15, 024062 (2021)
Over the past years, thermionic energy conversion (TEC) with a reduced inter-electrode vacuum gap has been studied as an effective way to mitigate a large potential barrier due to space charge accumulation. However, existing theoretical models do not
Externí odkaz:
http://arxiv.org/abs/1907.06161
Autor:
Jarzembski, Amun, Tokunaga, Takuro, Crossley, Jacob, Yun, Jeonghoon, Shaskey, Cedric, Murdick, Ryan A., Park, Inkyu, Francoeur, Mathieu, Park, Keunhan
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 from a feedback-controlled platinum nanoheater to a laterally oscillating
Externí odkaz:
http://arxiv.org/abs/1904.09383
This article proposes a new energy harvesting concept that greatly enhances thermionic power generation with high e ciency by exploiting the near- field enhancement of thermal radiation. The proposed near-field enhanced thermionic energy conversion (
Externí odkaz:
http://arxiv.org/abs/1703.03880