Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates
We experimented with two polymer materials with different ultraviolet (UV) wavelength absorption characteristics, which are commonly used in flexible devices, by applying an ultrashort-pulsed laser of a 355-nm UV wavelength for 10 ps. The laser parameters studied were pulse repetition rate, laser ir...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/9/2018 |
| _version_ | 1797554640249683968 |
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| author | Seung Sik Ham Ho Lee |
| author_facet | Seung Sik Ham Ho Lee |
| author_sort | Seung Sik Ham |
| collection | DOAJ |
| description | We experimented with two polymer materials with different ultraviolet (UV) wavelength absorption characteristics, which are commonly used in flexible devices, by applying an ultrashort-pulsed laser of a 355-nm UV wavelength for 10 ps. The laser parameters studied were pulse repetition rate, laser irradiation method, and laser power condition. Previous studies using polyethylene terephthalate (PET), which does not exhibit linear absorption at a UV wavelength, have focused on processing trends resulting in minimal collateral damage around the laser-induced ablation. However, our results showed a trend of accumulating such damage irrespective of the laser parameters. Meanwhile, polyimide (PI) exhibited a completely different behavior depending on the laser parameters. At low pulse repetition rates, minimal collateral damage was observed, whereas at high repetition rates, the morphology varied considerably. The electrical characteristics of the laser-processed materials were found to be correlated with the variations in morphology. In the case of PI, such variations in electrical resistance and morphology indicated that the material was carbonized. The findings of this study are expected to provide a useful reference when selecting parameters for the laser processing of similar polymer materials. |
| first_indexed | 2024-03-10T16:34:57Z |
| format | Article |
| id | doaj.art-80fe667f9c664169b732aa8ee081344e |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T16:34:57Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-80fe667f9c664169b732aa8ee081344e2023-11-20T12:34:19ZengMDPI AGPolymers2073-43602020-09-01129201810.3390/polym12092018Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition RatesSeung Sik Ham0Ho Lee1Institute for Nano Photonics Applications, Kyungpook National University, Daegu 41566, KoreaInstitute for Nano Photonics Applications, Kyungpook National University, Daegu 41566, KoreaWe experimented with two polymer materials with different ultraviolet (UV) wavelength absorption characteristics, which are commonly used in flexible devices, by applying an ultrashort-pulsed laser of a 355-nm UV wavelength for 10 ps. The laser parameters studied were pulse repetition rate, laser irradiation method, and laser power condition. Previous studies using polyethylene terephthalate (PET), which does not exhibit linear absorption at a UV wavelength, have focused on processing trends resulting in minimal collateral damage around the laser-induced ablation. However, our results showed a trend of accumulating such damage irrespective of the laser parameters. Meanwhile, polyimide (PI) exhibited a completely different behavior depending on the laser parameters. At low pulse repetition rates, minimal collateral damage was observed, whereas at high repetition rates, the morphology varied considerably. The electrical characteristics of the laser-processed materials were found to be correlated with the variations in morphology. In the case of PI, such variations in electrical resistance and morphology indicated that the material was carbonized. The findings of this study are expected to provide a useful reference when selecting parameters for the laser processing of similar polymer materials.https://www.mdpi.com/2073-4360/12/9/2018polyimidepolyethylene terephthalatepicosecond laserheat accumulation effectcarbonization phenomenon |
| spellingShingle | Seung Sik Ham Ho Lee Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates Polymers polyimide polyethylene terephthalate picosecond laser heat accumulation effect carbonization phenomenon |
| title | Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates |
| title_full | Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates |
| title_fullStr | Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates |
| title_full_unstemmed | Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates |
| title_short | Surface Characteristics of Polymers with Different Absorbance after UV Picosecond Pulsed Laser Processing Using Various Repetition Rates |
| title_sort | surface characteristics of polymers with different absorbance after uv picosecond pulsed laser processing using various repetition rates |
| topic | polyimide polyethylene terephthalate picosecond laser heat accumulation effect carbonization phenomenon |
| url | https://www.mdpi.com/2073-4360/12/9/2018 |
| work_keys_str_mv | AT seungsikham surfacecharacteristicsofpolymerswithdifferentabsorbanceafteruvpicosecondpulsedlaserprocessingusingvariousrepetitionrates AT holee surfacecharacteristicsofpolymerswithdifferentabsorbanceafteruvpicosecondpulsedlaserprocessingusingvariousrepetitionrates |