Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser
Abstract Internal and local modifications via ultrashort pulsed laser illumination to diamond are promising for manufacturing diamond electronic devices. The relationship between the diameter/electrical conductivity of modified regions and the laser fluence distribution was investigated. Picosecond...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-10-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-21432-9 |
| _version_ | 1811223520285294592 |
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| author | Daijiro Tokunaga Masataka Sato Sho Itoh Hirofumi Hidai Takashige Omatsu Souta Matsusaka |
| author_facet | Daijiro Tokunaga Masataka Sato Sho Itoh Hirofumi Hidai Takashige Omatsu Souta Matsusaka |
| author_sort | Daijiro Tokunaga |
| collection | DOAJ |
| description | Abstract Internal and local modifications via ultrashort pulsed laser illumination to diamond are promising for manufacturing diamond electronic devices. The relationship between the diameter/electrical conductivity of modified regions and the laser fluence distribution was investigated. Picosecond laser illumination without scanning the laser focus fabricated short modified regions in diamond. As a result, the calculated laser fluence distribution matches the distribution of the modified regions. Wire-shaped modified regions were fabricated via laser illumination with scanning of the laser focus, and the corresponding diameter and electrical conductivity were investigated by controlling the laser focus movement distance per pulse (V f ). The modified regions fabricated with varying V f were divided into three categories depending on the trend of the relationship between the diameter and electrical conductivity. The diameters of the modified regions were constant at the maximum values when V f was sufficiently small, decreased with increasing V f , and reached a minimum when V f was sufficiently large. The modified regions became more electrically conductive with increasing V f , even when the deposited energy per unit length decreased. Moreover, the electrical conductivity decreased significantly when the diameter became constant at the minimum value. Finally, the relationship between the diameter/electrical conductivity of the modified regions and the laser fluence distribution was elucidated. |
| first_indexed | 2024-04-12T08:34:04Z |
| format | Article |
| id | doaj.art-778abf4529b74973b4c8f6b2d2191c31 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-12T08:34:04Z |
| publishDate | 2022-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-778abf4529b74973b4c8f6b2d2191c312022-12-22T03:40:04ZengNature PortfolioScientific Reports2045-23222022-10-011211910.1038/s41598-022-21432-9Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laserDaijiro Tokunaga0Masataka Sato1Sho Itoh2Hirofumi Hidai3Takashige Omatsu4Souta Matsusaka5Department of Mechanical EngineeringDepartment of Mechanical EngineeringDepartment of Mechanical EngineeringDepartment of Mechanical EngineeringMolecular Chirality Research Center, Chiba UniversityDepartment of Mechanical EngineeringAbstract Internal and local modifications via ultrashort pulsed laser illumination to diamond are promising for manufacturing diamond electronic devices. The relationship between the diameter/electrical conductivity of modified regions and the laser fluence distribution was investigated. Picosecond laser illumination without scanning the laser focus fabricated short modified regions in diamond. As a result, the calculated laser fluence distribution matches the distribution of the modified regions. Wire-shaped modified regions were fabricated via laser illumination with scanning of the laser focus, and the corresponding diameter and electrical conductivity were investigated by controlling the laser focus movement distance per pulse (V f ). The modified regions fabricated with varying V f were divided into three categories depending on the trend of the relationship between the diameter and electrical conductivity. The diameters of the modified regions were constant at the maximum values when V f was sufficiently small, decreased with increasing V f , and reached a minimum when V f was sufficiently large. The modified regions became more electrically conductive with increasing V f , even when the deposited energy per unit length decreased. Moreover, the electrical conductivity decreased significantly when the diameter became constant at the minimum value. Finally, the relationship between the diameter/electrical conductivity of the modified regions and the laser fluence distribution was elucidated.https://doi.org/10.1038/s41598-022-21432-9 |
| spellingShingle | Daijiro Tokunaga Masataka Sato Sho Itoh Hirofumi Hidai Takashige Omatsu Souta Matsusaka Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser Scientific Reports |
| title | Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| title_full | Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| title_fullStr | Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| title_full_unstemmed | Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| title_short | Focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| title_sort | focus movement distance per pulse dependence of electrical conductivity and diameter of diamond internal modification induced by picosecond laser |
| url | https://doi.org/10.1038/s41598-022-21432-9 |
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