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Vol. 34, No. 8(3), S&M3042

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Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Sensors and Materials, Volume 36, Number 10(1) (2024)
Copyright(C) MYU K.K.
pp. 4155-4164
S&M3791 Research Paper of Special Issue
https://doi.org/10.18494/SAM5099
Published: October 11, 2024

Comparative Analyses of Absorptivity of Broadband Absorber in Visible to Near-Infrared Range by Different Simulation Software: COMSOL and Finite Difference Time Domain (FDTD) [PDF]

Ke-Hua Chen, Ling-Chieh Tseng, Wei Chien, and Cheng-Fu Yang

(Received April 30, 2024; Accepted August 26, 2024)

Keywords: absorptivity, broadband absorbers, different simulation software, COMSOL, FDTD

In our research laboratory, we have developed an absorber composed of various materials and structures. This absorber comprised the following layers arranged from top to bottom: a cubic array layer of titanium and silicon dioxide (SiO2), a magnesium fluoride dielectric layer (MgF2), and an aluminum substrate. Previously, we employed finite difference time domain (FDTD) simulations to identify optimal parameters for this structure and subsequently applied them to COMSOL simulations. The optimal parameters determined through FDTD simulations resulted in an average absorptivity of 95.2% within the wavelength range from 400 to 1500 nm. However, when these parameters were applied to COMSOL simulations, the average absorptivity within the same wavelength range decreased to 93.7%. Subsequently, we utilized COMSOL to adjust various parameters in order to identify the optimal ones. Our investigation focused on exploring the impact of different parameters such as material thicknesses, absorber structures, electromagnetic field distributions, and incident angles on the absorptivity. Through this comprehensive analysis, we aimed to refine our understanding of how these parameters affect the absorptivity performance of the structure. This research not only contributes to the optimization of absorber design but also enhances our knowledge of the underlying physical mechanisms governing light absorption in such structures.

Corresponding author: Wei Chien and Cheng-Fu Yang


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Cite this article
Ke-Hua Chen, Ling-Chieh Tseng, Wei Chien, and Cheng-Fu Yang, Comparative Analyses of Absorptivity of Broadband Absorber in Visible to Near-Infrared Range by Different Simulation Software: COMSOL and Finite Difference Time Domain (FDTD), Sens. Mater., Vol. 36, No. 10, 2024, p. 4155-4164.



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