Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared
In the development of optical absorption technology, achieving ultra-wideband high absorption structures that span from the 200 nm ultraviolet C region to the 5800 nm mid-infrared range has been a significant challenge in materials science. Previous studies have shown that few optical absorbers can...
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2025-01-01
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| author | Chih-Ching Hung Xin-Yu Lin Tung-Lung Wu Shu-Han Liao Ho-Sheng Chen Cheng-Fu Yang |
| author_facet | Chih-Ching Hung Xin-Yu Lin Tung-Lung Wu Shu-Han Liao Ho-Sheng Chen Cheng-Fu Yang |
| author_sort | Chih-Ching Hung |
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| description | In the development of optical absorption technology, achieving ultra-wideband high absorption structures that span from the 200 nm ultraviolet C region to the 5800 nm mid-infrared range has been a significant challenge in materials science. Previous studies have shown that few optical absorbers can simultaneously achieve an absorption rate above 0.900 and cover such a vast spectral range. This study presents an innovative seven-layer composite structure that successfully addresses this long-standing technical issue. Through a carefully designed layered architecture, the researchers employed COMSOL Multiphysics (version 6.0) for detailed numerical simulations to verify the optical performance of the structure. The structural design features two key innovations. In the layered composition, the bottom (<i>h</i>1), <i>h</i>3, and <i>h</i>5 layers are made of metallic Fe, while the layers above them (<i>h</i>2, <i>h</i>4, and <i>h</i>6) use SiO<sub>2</sub>. The top layer is composed of a discontinuous cylinder Ti matrix. The first innovation involves the use of an inwardly recessed square design on the metallic Fe planes of the <i>h</i>4 and <i>h</i>6 layers, achieving high absorption across the 600–5800 nm range. The second innovation involves the use of the discontinuous cylinder Ti matrix for the top layer, which successfully enhances absorption performance in the 200–600 nm wavelength range. This structure not only employs relatively low-cost metals and oxide materials but also demonstrates significant optical absorption potential. Through numerical simulations and precise structural design, this study provides new ideas and technological pathways for the development of ultra-wideband optical absorbers. |
| format | Article |
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| language | English |
| publishDate | 2025-01-01 |
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| series | Photonics |
| spelling | doaj-art-ad10e0c610cc4b62a6b71c1dd1e37ec92025-01-24T13:46:27ZengMDPI AGPhotonics2304-67322025-01-011218310.3390/photonics12010083Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle InfraredChih-Ching Hung0Xin-Yu Lin1Tung-Lung Wu2Shu-Han Liao3Ho-Sheng Chen4Cheng-Fu Yang5School of Big Data, Fuzhou University of International Studies and Trade, Fuzhou 350202, ChinaDepartment of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, TaiwanDepartment of Electrical Engineering, Lunghwa University of Science and Technology, Taoyuan 333, TaiwanDepartment of Electronic and Computer Engineering, Tamkang University, New Taipei City 251, TaiwanSchool of Materials Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, ChinaDepartment of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 811, TaiwanIn the development of optical absorption technology, achieving ultra-wideband high absorption structures that span from the 200 nm ultraviolet C region to the 5800 nm mid-infrared range has been a significant challenge in materials science. Previous studies have shown that few optical absorbers can simultaneously achieve an absorption rate above 0.900 and cover such a vast spectral range. This study presents an innovative seven-layer composite structure that successfully addresses this long-standing technical issue. Through a carefully designed layered architecture, the researchers employed COMSOL Multiphysics (version 6.0) for detailed numerical simulations to verify the optical performance of the structure. The structural design features two key innovations. In the layered composition, the bottom (<i>h</i>1), <i>h</i>3, and <i>h</i>5 layers are made of metallic Fe, while the layers above them (<i>h</i>2, <i>h</i>4, and <i>h</i>6) use SiO<sub>2</sub>. The top layer is composed of a discontinuous cylinder Ti matrix. The first innovation involves the use of an inwardly recessed square design on the metallic Fe planes of the <i>h</i>4 and <i>h</i>6 layers, achieving high absorption across the 600–5800 nm range. The second innovation involves the use of the discontinuous cylinder Ti matrix for the top layer, which successfully enhances absorption performance in the 200–600 nm wavelength range. This structure not only employs relatively low-cost metals and oxide materials but also demonstrates significant optical absorption potential. Through numerical simulations and precise structural design, this study provides new ideas and technological pathways for the development of ultra-wideband optical absorbers.https://www.mdpi.com/2304-6732/12/1/83planar metamaterialmultifunctional absorberultra-wideband optical absorbermulti-wavelength resonant absorber |
| spellingShingle | Chih-Ching Hung Xin-Yu Lin Tung-Lung Wu Shu-Han Liao Ho-Sheng Chen Cheng-Fu Yang Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared Photonics planar metamaterial multifunctional absorber ultra-wideband optical absorber multi-wavelength resonant absorber |
| title | Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared |
| title_full | Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared |
| title_fullStr | Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared |
| title_full_unstemmed | Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared |
| title_short | Investigation of an Ultra-Wideband Optical Absorber with the Bandwidth from Ultraviolet C to Middle Infrared |
| title_sort | investigation of an ultra wideband optical absorber with the bandwidth from ultraviolet c to middle infrared |
| topic | planar metamaterial multifunctional absorber ultra-wideband optical absorber multi-wavelength resonant absorber |
| url | https://www.mdpi.com/2304-6732/12/1/83 |
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