Time: 16:00, June 26, 2023, GMT+8

Venue: Room 303, Engineering Training Center at the East Area of Mafangshan Campus

Topic: Laser-Based High-Throughput Surface Nanostructuring for Functional Surface Patterning on Metal Alloys

Abstract：

Prof. DingHongtaowill present their latest research on a fast and efficient method for creating functional surface patterns on metal alloys using nanosecond laser-based high-throughput surface nanostructuring (nHSN). their nHSN method employs nanosecond laser pulses to treat large surface areas in just a few seconds, significantly reducing processing time from hundreds of minutes per square inch. In contrast to conventional understanding of surface silanization, theyhave discovered that the nHSN chemical treatment step induces not only silanization effects but also, more prominently, chemical etching of metal surfaces. By engineering random nanoscale structures on these surfaces, their method creates superhydrophobic surfaces with water repellent, anti-icing, self-cleaning, antiviral, and light-absorbing characteristics. Through careful selection of silane reagents and laser operation parameters, theyhave developed a powerful engineering method to tune surface wettability between superhydrophilicity and superhydrophobicity. their findings could lead to new and exciting opportunities for various surface engineering applications.

Biography:

Ding Hongtao is an associate professor of mechanical engineering at the University of Iowa, where he heads the Laser Materials Processing Laboratory and serves as the director of the Advanced Manufacturing & Materials Division at the Iowa Technology Institute. His research interests include high-throughput nanostructuring for superhydrophobic or superwicking surfaces, tunable THz metamaterials, metal additive manufacturing, joining, and machining via lasers, ultrasonics & friction stir processes, and data-driven modeling and simulations of materials processing & microstructures. With over 60 published technical articles in leading archival journals and four pending US patents, Dr. Ding is highly regarded for his expertise in advanced manufacturing & materials. His research has been supported by the National Science Foundation, the Department of Defense, the Department of Energy, and industry sponsors. Dr. Ding earned his bachelor’s degree from Shanghai Jiao Tong University, China, a master’s degree from the University of Michigan, and a doctorate from Purdue University, all in mechanical engineering. In recognition of his work, Dr. Ding received the SME Outstanding Young Manufacturing Engineer Award. He also serves as an associate editor of the Journal of Manufacturing Processes and Manufacturing Letters.

Source: School of Mechatronics Engineering

Edited by: Li Tiantian