Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology
Cell gap thickness measurement on the scale of micrometers has been widely developed, due to its importance for applications such as display. In this paper, we propose and demonstrate a simple and precise method for measuring a millimeter-scaled cell gap by using a terahertz time-domain spectroscopy...
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| Format: | Article |
| Language: | English |
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IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7484854/ |
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| author | Chao-Kuei Lee Chung-Lun Wu Han-Wei Zhang Chun-Ta Wang Tsung-Hsien Lin |
| author_facet | Chao-Kuei Lee Chung-Lun Wu Han-Wei Zhang Chun-Ta Wang Tsung-Hsien Lin |
| author_sort | Chao-Kuei Lee |
| collection | DOAJ |
| description | Cell gap thickness measurement on the scale of micrometers has been widely developed, due to its importance for applications such as display. In this paper, we propose and demonstrate a simple and precise method for measuring a millimeter-scaled cell gap by using a terahertz time-domain spectroscopy system. Basically, it is a kind of spectrum scanning method with a light source of broadband terahertz radiation. This method allows us to measure the cell gap from 15 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula> to 1.5 mm. In addition, the accuracy of measured thickness for the proposed method is also discussed and analyzed. This is the first time, to our best knowledge, that we can precisely measure the cell gap thickness as high as millimeters by optical measurement. |
| format | Article |
| id | doaj-art-6f7952a0eb9f4486baaf8cdea1bc0875 |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-6f7952a0eb9f4486baaf8cdea1bc08752025-08-20T03:32:55ZengIEEEIEEE Photonics Journal1943-06552016-01-01831810.1109/JPHOT.2016.25719587484854Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy TechnologyChao-Kuei Lee0Chung-Lun Wu1Han-Wei Zhang2Chun-Ta Wang3Tsung-Hsien Lin4Department of Photonics, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Sun Yat-sen University, Kaohsiung, TaiwanDepartment of Photonics, National Sun Yat-sen University, Kaohsiung, TaiwanCell gap thickness measurement on the scale of micrometers has been widely developed, due to its importance for applications such as display. In this paper, we propose and demonstrate a simple and precise method for measuring a millimeter-scaled cell gap by using a terahertz time-domain spectroscopy system. Basically, it is a kind of spectrum scanning method with a light source of broadband terahertz radiation. This method allows us to measure the cell gap from 15 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula> to 1.5 mm. In addition, the accuracy of measured thickness for the proposed method is also discussed and analyzed. This is the first time, to our best knowledge, that we can precisely measure the cell gap thickness as high as millimeters by optical measurement.https://ieeexplore.ieee.org/document/7484854/Thickness measurementliquid crystalsubmilimeter wave technology |
| spellingShingle | Chao-Kuei Lee Chung-Lun Wu Han-Wei Zhang Chun-Ta Wang Tsung-Hsien Lin Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology IEEE Photonics Journal Thickness measurement liquid crystal submilimeter wave technology |
| title | Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology |
| title_full | Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology |
| title_fullStr | Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology |
| title_full_unstemmed | Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology |
| title_short | Millimeter-Scaled Thick Cell Gap Measurement by Terahertz Spectroscopy Technology |
| title_sort | millimeter scaled thick cell gap measurement by terahertz spectroscopy technology |
| topic | Thickness measurement liquid crystal submilimeter wave technology |
| url | https://ieeexplore.ieee.org/document/7484854/ |
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