Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering
The characterization of surface micro-roughness is investigated by using off-specular measurements of polarized optical scattering. In the measurement system, the detection angles of optical scattering are defined by the vertical and level scattering angles. The rotating mechanism of angles is contr...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sciendo
2019-12-01
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| Series: | Measurement Science Review |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/msr-2019-0033 |
| _version_ | 1818727940735631360 |
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| author | Liu Cheng-Yang Chang Li-Jen |
| author_facet | Liu Cheng-Yang Chang Li-Jen |
| author_sort | Liu Cheng-Yang |
| collection | DOAJ |
| description | The characterization of surface micro-roughness is investigated by using off-specular measurements of polarized optical scattering. In the measurement system, the detection angles of optical scattering are defined by the vertical and level scattering angles. The rotating mechanism of angles is controlled by stepper motors. Waveplate and polarizer are used to adjust light polarization and detection. We conduct the optical scattering measurements by using four standard metal sheets of surface roughness. The nominal values (Ra) of standard micro-roughness are 1.6 μm, 0.8 μm, 0.4 μm, and 0.1 μm, respectively. Samples with different surface roughness are evaluated with the utilization of laser sources at three incident wavelengths. These polarized images are analyzed using a computer program to obtain the distribution of light intensity. The results show great correlation between the metal surface roughness and polarization states. This measurement system can be used to quickly and accurately distinguish between different surfaces and properties. |
| first_indexed | 2024-12-17T22:22:05Z |
| format | Article |
| id | doaj.art-1d8467f6bb2b4396b526d2a7cabdc1f1 |
| institution | Directory Open Access Journal |
| issn | 1335-8871 |
| language | English |
| last_indexed | 2024-12-17T22:22:05Z |
| publishDate | 2019-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Measurement Science Review |
| spelling | doaj.art-1d8467f6bb2b4396b526d2a7cabdc1f12022-12-21T21:30:27ZengSciendoMeasurement Science Review1335-88712019-12-0119625726310.2478/msr-2019-0033msr-2019-0033Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical ScatteringLiu Cheng-Yang0Chang Li-Jen1Department of Biomedical Engineering, National Yang-Ming University, Taipei City, TaiwanDepartment of Biomedical Engineering, National Yang-Ming University, Taipei City, TaiwanThe characterization of surface micro-roughness is investigated by using off-specular measurements of polarized optical scattering. In the measurement system, the detection angles of optical scattering are defined by the vertical and level scattering angles. The rotating mechanism of angles is controlled by stepper motors. Waveplate and polarizer are used to adjust light polarization and detection. We conduct the optical scattering measurements by using four standard metal sheets of surface roughness. The nominal values (Ra) of standard micro-roughness are 1.6 μm, 0.8 μm, 0.4 μm, and 0.1 μm, respectively. Samples with different surface roughness are evaluated with the utilization of laser sources at three incident wavelengths. These polarized images are analyzed using a computer program to obtain the distribution of light intensity. The results show great correlation between the metal surface roughness and polarization states. This measurement system can be used to quickly and accurately distinguish between different surfaces and properties.https://doi.org/10.2478/msr-2019-0033optical scatteringpolarizationmicro-roughness |
| spellingShingle | Liu Cheng-Yang Chang Li-Jen Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering Measurement Science Review optical scattering polarization micro-roughness |
| title | Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering |
| title_full | Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering |
| title_fullStr | Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering |
| title_full_unstemmed | Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering |
| title_short | Characterization of Surface Micro-Roughness by Off-Specular Measurements of Polarized Optical Scattering |
| title_sort | characterization of surface micro roughness by off specular measurements of polarized optical scattering |
| topic | optical scattering polarization micro-roughness |
| url | https://doi.org/10.2478/msr-2019-0033 |
| work_keys_str_mv | AT liuchengyang characterizationofsurfacemicroroughnessbyoffspecularmeasurementsofpolarizedopticalscattering AT changlijen characterizationofsurfacemicroroughnessbyoffspecularmeasurementsofpolarizedopticalscattering |