Optical Properties of Black Carbon Aerosols with Different Coating Models
Research on the optical properties of black carbon (BC) aerosols is highly important for investigating global climate change. A general inhomogeneous particle superposition model is developed. Inhomogeneous particles with arbitrary shapes can be constructed by this model. BC aerosols with core-shell...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/5/359 |
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| author | Yanxia Tang Yong Huang Keyong Zhu |
| author_facet | Yanxia Tang Yong Huang Keyong Zhu |
| author_sort | Yanxia Tang |
| collection | DOAJ |
| description | Research on the optical properties of black carbon (BC) aerosols is highly important for investigating global climate change. A general inhomogeneous particle superposition model is developed. Inhomogeneous particles with arbitrary shapes can be constructed by this model. BC aerosols with core-shell, spherical, ellipsoid, and irregular coating models are established to explore the impact of coating shape on their optical properties. The optical properties are studied employing the discrete dipole approximation method (DDA). The influences of the morphology of BC aerosols, the coating volume fractions, and the shape of coatings on the optical properties are analyzed. The irregular coating shape causes a higher forward scattering intensity and a lower extinction cross-section. The forward scattering intensity of the core-shell model is lower than other models. The effect of the coating shape on forward scattering intensity becomes smaller as coating volume and fractal dimension increase. Consequently, assuming irregular coating as spherical coating models considered in most studies leads to inaccuracy in the optical properties of BC aerosols. It is necessary to comprehensively consider the effects of aerosol morphology and coating volume for investigating the optical properties of black carbon aerosols. |
| first_indexed | 2024-03-10T03:04:06Z |
| format | Article |
| id | doaj.art-d59ee5309a2747118ad66ad40c722184 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T03:04:06Z |
| publishDate | 2022-05-01 |
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| record_format | Article |
| series | Photonics |
| spelling | doaj.art-d59ee5309a2747118ad66ad40c7221842023-11-23T12:41:22ZengMDPI AGPhotonics2304-67322022-05-019535910.3390/photonics9050359Optical Properties of Black Carbon Aerosols with Different Coating ModelsYanxia Tang0Yong Huang1Keyong Zhu2School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaResearch on the optical properties of black carbon (BC) aerosols is highly important for investigating global climate change. A general inhomogeneous particle superposition model is developed. Inhomogeneous particles with arbitrary shapes can be constructed by this model. BC aerosols with core-shell, spherical, ellipsoid, and irregular coating models are established to explore the impact of coating shape on their optical properties. The optical properties are studied employing the discrete dipole approximation method (DDA). The influences of the morphology of BC aerosols, the coating volume fractions, and the shape of coatings on the optical properties are analyzed. The irregular coating shape causes a higher forward scattering intensity and a lower extinction cross-section. The forward scattering intensity of the core-shell model is lower than other models. The effect of the coating shape on forward scattering intensity becomes smaller as coating volume and fractal dimension increase. Consequently, assuming irregular coating as spherical coating models considered in most studies leads to inaccuracy in the optical properties of BC aerosols. It is necessary to comprehensively consider the effects of aerosol morphology and coating volume for investigating the optical properties of black carbon aerosols.https://www.mdpi.com/2304-6732/9/5/359inhomogeneous particle superposition modelblack carbon aerosolsoptical propertiesdiscrete dipole approximation method |
| spellingShingle | Yanxia Tang Yong Huang Keyong Zhu Optical Properties of Black Carbon Aerosols with Different Coating Models Photonics inhomogeneous particle superposition model black carbon aerosols optical properties discrete dipole approximation method |
| title | Optical Properties of Black Carbon Aerosols with Different Coating Models |
| title_full | Optical Properties of Black Carbon Aerosols with Different Coating Models |
| title_fullStr | Optical Properties of Black Carbon Aerosols with Different Coating Models |
| title_full_unstemmed | Optical Properties of Black Carbon Aerosols with Different Coating Models |
| title_short | Optical Properties of Black Carbon Aerosols with Different Coating Models |
| title_sort | optical properties of black carbon aerosols with different coating models |
| topic | inhomogeneous particle superposition model black carbon aerosols optical properties discrete dipole approximation method |
| url | https://www.mdpi.com/2304-6732/9/5/359 |
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