کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7129592 1461599 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature effects on the geometry during the formation of micro-holes fabricated by femtosecond laser in PMMA
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Temperature effects on the geometry during the formation of micro-holes fabricated by femtosecond laser in PMMA
چکیده انگلیسی
In this study, the temperature effects on hole geometry of the PMMA during micro-holes drilling by femtosecond laser has been studied under various pulse energy and number of pulse. The laser-induced hole's diameter is considerably increased by 73% as the temperature rises from 20 °C to 90 °C. Remarkable enhancement in the removal volume of micro-hole is also observed under high temperature. The possible mechanism for such changes is discussed in detail on account of optical absorption enhancement and higher density of surface plasma. The atomic percentage of oxygen obviously increases with the increase of temperature, which is beneficial to femtosecond laser fabrication of PMMA micro-hole. The spatter area of micro-hole has been found to tremendously extend with the increase of temperature, which is due to recoil pressure effect. These results demonstrate that temperature plays a crucial role to tailor micro-hole fabrication by femtosecond laser.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 100, 1 March 2018, Pages 256-260
نویسندگان
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