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Non-Fourier thermal focusing by gradient thermal metamaterials based on the Cattaneo–Vernotte model

Year: 2024
Type: article
Abstract: Direct methods to manipulate internal heat conduction in solids remain nearly elusive. In this work, we propose a two-dimensional (2D) gradient thermal metamaterial lens designed to control the internal non-Fourier heat conduction. This gradient thermal metamaterial comprises cylindrical structures made of dermis immersed in a stratum background with an effective refractive index adhering to the hyperbolic secant profile rule. Subsequently, the effective refractive index of the thermal metamaterial is defined and numerically assessed using the extended plane wave expansion method. Thereafter, the non-Fourier heat conduction is analyzed numerically via the finite element method in the time-domain. Our findings indicate that the proposed gradient thermal metamaterial can focus the heat effectively and is akin to a flat thermal lens. The proposed flat thermal lens offers promising avenues for enhancing the material properties by laser-based technologies.
DOI: 10.1063/5.0228819
Authors: Zheng-Yang Li, Tian-Xue Ma, Dongjia Yan, Hao Wang, Mikhail V. Golub, Seyed Mahmoud Hosseini, Donghuan Liu, Peijun Wei, Chuanzeng Zhang
Institutions: University of Science and Technology Beijing, Beijing Jiaotong University, Shanghai Laser Technology Institute, Kuban State University, Ferdowsi University of Mashhad, Ningbo University, University of Siegen
Language: English
Open Access status: hybrid
Estimated APC paid: $3,500
OpenAlex ID: W4404503402
FWCI: 0.617
Cites: 37
Cited by: 8
Related to: 10