On May 28th, at the invitation of the School of Mechanical Engineering of our school, Prof. Martin Byung-Guk Jun of the School of Mechanical Engineering of Purdue University made a report entitled "Femtosecond laser machining for surface texturing and optical fiber sensor" at the lecture hall on the seventh floor of the School of Mechanical Engineering. The academic report. The report was hosted by Prof. Fu Yonghong from the School of Mechanical Engineering. Nearly a hundred teachers and students attended the report meeting.
Professor Jun detailed the femtosecond laser processing of surface texture and fiber optic sensors. Among them, the structure and application of the hydrophobic surface and the influence of the laser ablation of the hydrophobic surface on the structure of the hydrophobic surface are introduced. The advantages and disadvantages of the femtosecond laser and the micro-milling operation surface are also compared. Due to its structural characteristics, hydrophobic surfaces can be applied to waterproof coatings, self-cleaning metal surfaces, and anti-icing coatings on fabrics and papers. While using laser ablation of hydrophobic surfaces, under the influence of relatively low laser, laser ablation of carpets under vacuum results in uniform coating of the surface in microscopic and submicroscopic structures (about 166 after silanization), many using subsequent silanes To change the surface chemistry of the processed substrate. The ablated material will produce a micro-pattern with a single-scale structure. The micro-scale convex surface superimposed on the larger structure ensures a stable liquid/air interface because CA gradually decreases as the liquid sinks into the cavity. Causes a stable non-uniformity. Compared with micro-milling, femtosecond lasers are more adept at processing micro-scale surface textures and have broad prospects.
Martin Byung-Guk Jun received his bachelor's and master's degrees from the University of British Victoria in Canada. In 2005, he received a PhD in Engineering from the University of Illinois at Urbana-Champaign. Research expertise: cross-scale manufacturing, ultra-fast laser processing. In recent years, Professor Jun has devoted himself to advanced manufacturing. Research directions and interests include fiber optic sensors, additive manufacturing, and composite cutting theory. He successively presided over six research projects at the national and provincial level in Canada and the United States, participated in 5 US-Korean, Canadian-Korean, and US-China international cooperation projects; published more than 120 SCI papers; and also International Journal of Precision Engineering and Manufacturing-Green Technology, MSEC-ASME, Journal of Open Innovation, ASME Journal of Micro and Nano Manufacturing, Materials, and other editors in the manufacturing field.
