Dynamical Response of a Radiative Thermal Transistor Based on Suspended Insulator-Metal-Transition Membranes

Latella, Ivan; Marconot, O.; Sylvestre, Julien; Fréchette, Luc; Ben‐Abdallah, Philippe

doi:10.1103/physrevapplied.11.024004

Cited by 34 publications

(22 citation statements)

References 42 publications

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“…Understanding radiative heat transfer [1][2][3] is essential in many applications ranging from radiative cooling [4][5][6] and thermal diodes [7] to thermal transistors [8][9][10][11] and thermophotovoltaic systems [12][13][14][15][16]. The majority of works investigating radiative heat transfer consider materials that satisfy Lorentz reciprocity [17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Nonreciprocal radiative heat transfer between two planar bodies

Guo

Papadakis

et al. 2020

Phys. Rev. B

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We develop an analytical framework for nonreciprocal radiative heat transfer in two-body planar systems. Based on our formalism, we identify effects that are uniquely nonreciprocal in near-field heat transfer in planar systems. We further introduce a general thermodynamic constraint that is applicable for both reciprocal and nonreciprocal planar systems, in agreement with the second law of thermodynamics. We numerically demonstrate our findings in an example system consisting of magneto-optical materials. Our formalism applies to both near-and far-field regimes, opening opportunities for exploiting nonreciprocity in two-body radiative heat transfer systems.

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Section: Introductionmentioning

confidence: 99%

Nonreciprocal radiative heat transfer between two planar bodies

Guo

Papadakis

et al. 2020

Phys. Rev. B

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“…Due to the essential difference between electric and heat, it is common to manipulate electric currents, while to precisely control the thermal flux is still demanding. Recently, based on the unique mechanisms in the near-field regime, thermal analogues of the key building blocks in electronics have been realized, including radiative thermal diodes [23,24], transistors [25,26], memory elements [27], and repeater [28]. A thermal analogue to electrical switch, able to freely alternate between a low and a high thermal transport state utilizing the NFRHT, is referred to as a radiative thermal switch (RTS).…”

Section: Introductionmentioning

confidence: 99%

Radiative thermal switch driven by anisotropic black phosphorus plasmons

He¹,

Qi²,

Ren³

et al. 2020

Opt. Express

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Black phosphorus (BP), as a two-dimensional material, has exhibited unique optoelectronic properties due to its anisotropic plasmons. In the present work, we theoretically propose a radiative thermal switch (RTS) composed of BP gratings in the context of near-field radiative heat transfer. The simply mechanical rotation between the gratings enables considerable modulation of radiative heat flux, especially when combined with the use of non-identical parameters, i.e., filling factors and electron densities of BP. Among all the cases including asymmetric BP gratings, symmetric BP gratings, and BP films, we find that the asymmetric BP gratings possess the most excellent switching performance. The optimized switching factors can be as high as 90% with the vacuum separation d=50 nm and higher than 70% even in the far-field regime d=1 µm. The high-performance switching is basically attributed to the rotatable-tunable anisotropic BP plasmons between the asymmetric gratings. Moreover, due to the twisting principle, the RTS can work at a wide range of temperature, which has great advantage over the phase change materials-based RTS. The proposed switching scheme has great significance for the applications in optoelectronic devices and thermal circuits.

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“…In real situations, this volume fraction depends on the actual working conditions of the device and can be estimated, for instance, by combining conductivity measurements in the transition region and an effective-medium theory. [28] Here, to keep our theoretical description as simple as possible, we model the volume fraction as a smooth step function given by [28]    …”

Section: Physical System and Mathematical Formulationsmentioning

confidence: 99%

Thermal switch with multiple discrete levels

Zhou¹,

Wu²,

Zhang³

et al. 2020

ES Energy Environ.

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As the complexity of control technology increases, a binary switch is far from being able to meet people's needs for the number of control signals. However, few studies have considered how to achieve multiple discrete levels. To solve this problem, we design and demonstrate a 3-state thermal switch that employs combination of layers with different metal-insulator transition temperatures of W-doped and undoped VO2. These results overcoming the limitation that the original binary radiative switch only provides two discrete thermal signals ("ON" and "OFF"). Moreover, we further demonstrate that the introduction of twodimensional (2D) materials can effectively improve the resolution of discrete thermal signals, that is, make the difference of radiative heat flux between two adjacent discrete thermal signals more obvious. Finally, the feasibility for performing more number of discrete thermal signals is discussed by setting the number of films and the W-doped concentration of each film. These results pave the way for the development of multi-state channel information processing and multiple thermal management at compact thermal circuits.

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Dynamical Response of a Radiative Thermal Transistor Based on Suspended Insulator-Metal-Transition Membranes

Cited by 34 publications

References 42 publications

Nonreciprocal radiative heat transfer between two planar bodies

Nonreciprocal radiative heat transfer between two planar bodies

Radiative thermal switch driven by anisotropic black phosphorus plasmons

Thermal switch with multiple discrete levels

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