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Near-field radiative transfer in spectrally tunable double-layer phonon-polaritonic metamaterials

Title	Near-field radiative transfer in spectrally tunable double-layer phonon-polaritonic metamaterials
Author	Azadeh, Didari, Elçioğlu, E. B., Okutucu-Özyurt, T., Mengüç, Mustafa Pınar
Publication Date:	2018-06
Publication Place	- Elsevier
Subject	Near-field thermal radiation, Surface phonon polariton, Double-layer, Metamaterial, Nano-scale gap, Corrugated surface
Type	Periodical
Language	English
Digital	Yes
Manuscript	No
Library:	Özyeğin University
Library Asset ID	0022-4073
Record ID	df4ba394-db70-4beb-a65b-01524e9d5a7c
Library Location	Mechanical Engineering
Date	2018-06
Notes	TÜBİTAK ; Ozyegin University
Sample Text	Understanding of near-field radiative transfer is crucial for many advanced applications such as nanoscale energy harvesting, nano-manufacturing, thermal imaging, and radiative cooling. Near-field radiative transfer has been shown to be dependent on the material and morphological characteristics of systems, the gap distances between structures, and their temperatures. Surface interactions of phononic materials in close proximity of each other has led to promising results for novel near-field radiative transfer applications. For systems involving thin films and small structures, as the dimension(s) through which the heat transfer takes place is/are on the order of sub-micrometers, it is important to identify the impacts of size-related parameters on the results. In this work, we investigated the impact of geometric design and characteristics in a double-layer metamaterial system made up of GaN, SiC, h-BN; all of which have potential importance in micro-and nano-technological systems. The numerical study is performed using the NF-RT-FDTD algorithm, which is a versatile method to study near-field thermal radiation performances of advanced configurations of materials, even with arbitrary shapes. We have systematically investigated the thin film thickness, the substrate material, and the nanostructured surfaces effects, and reported on the best combination of scenarios among the studied cases to obtain maximum enhancement of radiative heat transfer rate. The findings of this work may be used in design and fabrication of new corrugated surfaces for energy harvesting purposes.
DOI	10.1016/j.jqsrt.2018.03.015
Cilt	212

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Özyeğin University

Near-field radiative transfer in spectrally tunable double-layer phonon-polaritonic metamaterials

Author Azadeh, Didari, Elçioğlu, E. B., Okutucu-Özyurt, T., Mengüç, Mustafa Pınar

Publication Date 2018-06

Publication Place - Elsevier

Subject Near-field thermal radiation, Surface phonon polariton, Double-layer, Metamaterial, Nano-scale gap, Corrugated surface

Type Periodical

Language English

Digital Yes

Manuscript No

Library Özyeğin University

Library Asset ID 0022-4073

Record ID df4ba394-db70-4beb-a65b-01524e9d5a7c

Library Location Mechanical Engineering

Date 2018-06

Notes TÜBİTAK ; Ozyegin University

Sample Text Understanding of near-field radiative transfer is crucial for many advanced applications such as nanoscale energy harvesting, nano-manufacturing, thermal imaging, and radiative cooling. Near-field radiative transfer has been shown to be dependent on the material and morphological characteristics of systems, the gap distances between structures, and their temperatures. Surface interactions of phononic materials in close proximity of each other has led to promising results for novel near-field radiative transfer applications. For systems involving thin films and small structures, as the dimension(s) through which the heat transfer takes place is/are on the order of sub-micrometers, it is important to identify the impacts of size-related parameters on the results. In this work, we investigated the impact of geometric design and characteristics in a double-layer metamaterial system made up of GaN, SiC, h-BN; all of which have potential importance in micro-and nano-technological systems. The numerical study is performed using the NF-RT-FDTD algorithm, which is a versatile method to study near-field thermal radiation performances of advanced configurations of materials, even with arbitrary shapes. We have systematically investigated the thin film thickness, the substrate material, and the nanostructured surfaces effects, and reported on the best combination of scenarios among the studied cases to obtain maximum enhancement of radiative heat transfer rate. The findings of this work may be used in design and fabrication of new corrugated surfaces for energy harvesting purposes.

DOI 10.1016/j.jqsrt.2018.03.015

Cilt 212