Recent Advances in Micro/Nano Manufacturing Technologies and Micro Devices

School of Mechanical and Manufacturing Engineering– UNSW Contestable Funding Activity Modelling of the machining characteristics in cutting of ductile, composite and brittle materials based on continuum mechanics, micromechanics and molecular dynamics Professor Xiaoping Li Department of Mechanical Engineering and Division of Bioengineering, National University of Singapore, Singapore ABSTRACT In manufacturing, the fundamentals for modeling of machining characteristics are different according to the workpiece materials. In this seminar, some cases of modeling of machining characteristics, including the chip formation, cutting forces, temperature and tool wear, are presented to show how the fundamentals for modeling of the machining characteristics have to be different for cutting of different materials. It is interesting to see that as the workpiece materials vary from metals to composites and then to silicon wafers, the dimensional scale for the analysis and modeling gets smaller and smaller. A similar trend can be seen in neuroengineering, where two categories of researches are to be carried out: neural sensing and neural modulation. BIO Dr Xiaoping Li received his PhD from UNSW in 1991 and joined the National University of Singapore in 1992, where he is currently Professor and Director of the Neuroengineering Lab with the Department of Mechanical Engineering and Division of Bioengineering. He is internationally known for his broad research contributions to manufacturing and neuroengineering. He has been serving as the Guest Editor for International Journal of Computer Application in Technology, International Journal of Intelligent Systems Technologies and Applications, International Journal of Manufacturing and Management, and Functional Materials Letters. His scholarly accomplishments have been documented in over 380 referred archival papers and book chapters and 15 patents granted or in pending.

Micromanipulation for Cell Injection and Tissue Engineering Professor XiaoQi Chen Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand ABSTRACT The advancement of technologies in micro devices and assistive technologies plays increasing roles in biomedical study and tissue engineering, which draw a synergy from multiple engineering disciplines and bioengineering. This talk present micromanipulation and micro-robotics for biomedical application. Specifically it focuses on haptics-assisted force feedback in cell injection and micromanipulation. Precision cell manipulation can be achieved based on biological cellular model and haptics rendering. The speaker further presents a new concept for automated 3D scaffold printing, cell singulation, channeling and seeding. Potentially this new method is able to build artificial tissue with greater bio-compatibility and uniformity.

BIO Dr XiaoQi Chen is a professor in the Department of Mechanical Engineering, University of Canterbury. He was a recipient of China-UK Technical Co-Operation Award for his PhD study in Electrical Engineering, the University of Liverpool (1986 – 1989). Dr Chen was Senior Scientist at Singapore Institute of Manufacturing Technology (1992-2006), where he won the prestigious “Singapore National Technology Award” in 1999. Dr Chen has been the founding Chair of IEEE Robotics and Automation New Zealand Chapter. He has served as Associate Editor for several technical journals. His research interests cover bio-mechatronics, mobile robotics, assistive device and technology. He has published over 170 referred conference and journal papers, edited two books; and is inventor of 6 patents.

Manufacturing of Freeform Optics Professor F. Z. Fang State Key Laboratory of Precision Measuring Technology & Instruments, Centre of MicroNano Manufacturing Technology, Tianjin University, China ABSTRACT Optical freeform surfaces find wide applications in optics, photonics, telecommunication, and commercial products. Due to the geometrical complexity and optical particularity, machining of optical freeform surfaces is more difficult comparing to conventional machining. The freeform feature points are designed according to the application requirement, and fitted to the NURBS formula. The tool path of machining can be generated by the formula derivation of fitting surface considering the mechanism of three-axis lathe. It is important to get the cutting tool path with the radius compensation, and to avoid the cutting interrelation. The solution is to determine the right parameters of cutting tool in advance according to the surface feature. The feature of freeform surface is analyzed using the proposed sectional curve method.

BIO Dr F. Z. Fang is currently a professor at Tianjin University. He has been involved as a project leader or principal investigator in more than 80 projects in the fields of ultra-precision machining, freeform machining, micro/nano machining and metrology funded by government or industrial partners. He is also the principal investigator for the national key program of 973 on fundamentals of manufacturing freeform optics. Dr Fang as the pioneer initiated the series of international conferences on nanomanufacturing (nanoMan), which is one of the leading conferences in the field of manufacturing. He is a fellow of CIRP, the president of the International Society for Nanomanufacturing (ISNM), the editor-in-chief of the International Journal of Nanomanufacturing (IJNM).

Thursday, 5th July 2012, 10:00 am – 12:00 pm Room 101, School of Mechanical and Manufacturing Engineering, UNSW

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All Welcome Convenor: Dr Huaizhong Li

Tel. 9385 5587

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