Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method
Natural structural colors inspire people to obtain the technology of spectral characteristics by designing and preparing micro-nano structures on the material’s surface. In this paper, the finite difference time domain (FDTD) method is used to simulate the spectral selectivity of micro-nano grating...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2622 |
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| author | Xiaoran Ma Bairui Du Shengwang Tan Haiying Song Shibing Liu |
| author_facet | Xiaoran Ma Bairui Du Shengwang Tan Haiying Song Shibing Liu |
| author_sort | Xiaoran Ma |
| collection | DOAJ |
| description | Natural structural colors inspire people to obtain the technology of spectral characteristics by designing and preparing micro-nano structures on the material’s surface. In this paper, the finite difference time domain (FDTD) method is used to simulate the spectral selectivity of micro-nano grating on an Au surface, and the spectral response characteristics of different physical parameters to the incident light are obtained. The results show that, when the grating depth is shallow, the absorption peaks of TM polarized incident light on the material surface take on redshifts with the increase in the grating period. Meanwhile, when the depth-width ratio of the grating structure is high, the absorption peak appears in the reflection spectrum and presents a linear red shift with the increase in the grating period after the linearly polarized light TE wave incident on the surface of the micro-nano structure. At the same time, the wavelength of the absorption peak of the reflection spectrum and the grating period take on one-to-one correspondence relations, and when the TM polarized light is incident, the reflection spectrum exhibits obvious selective absorption characteristic peaks at certain grating periods (for example, when the period is 0.4 μm, there are three absorption peaks at the wavelengths of 0.7, 0.95, and 1.55 μm). These simulation results can provide a good theoretical basis for the preparation of micro-nano structures with spectral regulation function in the practical application. |
| first_indexed | 2024-03-10T06:19:30Z |
| format | Article |
| id | doaj.art-b607250e1b2d43e39b682cadd2116d08 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T06:19:30Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b607250e1b2d43e39b682cadd2116d082023-11-22T19:24:16ZengMDPI AGNanomaterials2079-49912021-10-011110262210.3390/nano11102622Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain MethodXiaoran Ma0Bairui Du1Shengwang Tan2Haiying Song3Shibing Liu4Strong-Field and Ultrafast Photonics Lab, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaStrong-Field and Ultrafast Photonics Lab, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaStrong-Field and Ultrafast Photonics Lab, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaStrong-Field and Ultrafast Photonics Lab, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaStrong-Field and Ultrafast Photonics Lab, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaNatural structural colors inspire people to obtain the technology of spectral characteristics by designing and preparing micro-nano structures on the material’s surface. In this paper, the finite difference time domain (FDTD) method is used to simulate the spectral selectivity of micro-nano grating on an Au surface, and the spectral response characteristics of different physical parameters to the incident light are obtained. The results show that, when the grating depth is shallow, the absorption peaks of TM polarized incident light on the material surface take on redshifts with the increase in the grating period. Meanwhile, when the depth-width ratio of the grating structure is high, the absorption peak appears in the reflection spectrum and presents a linear red shift with the increase in the grating period after the linearly polarized light TE wave incident on the surface of the micro-nano structure. At the same time, the wavelength of the absorption peak of the reflection spectrum and the grating period take on one-to-one correspondence relations, and when the TM polarized light is incident, the reflection spectrum exhibits obvious selective absorption characteristic peaks at certain grating periods (for example, when the period is 0.4 μm, there are three absorption peaks at the wavelengths of 0.7, 0.95, and 1.55 μm). These simulation results can provide a good theoretical basis for the preparation of micro-nano structures with spectral regulation function in the practical application.https://www.mdpi.com/2079-4991/11/10/2622spectral characteristicsFDTD simulationssurface micro-nano structures |
| spellingShingle | Xiaoran Ma Bairui Du Shengwang Tan Haiying Song Shibing Liu Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method Nanomaterials spectral characteristics FDTD simulations surface micro-nano structures |
| title | Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method |
| title_full | Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method |
| title_fullStr | Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method |
| title_full_unstemmed | Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method |
| title_short | Spectral Characteristics Simulation of Topological Micro-Nano Structures Based on Finite Difference Time Domain Method |
| title_sort | spectral characteristics simulation of topological micro nano structures based on finite difference time domain method |
| topic | spectral characteristics FDTD simulations surface micro-nano structures |
| url | https://www.mdpi.com/2079-4991/11/10/2622 |
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