Can We Treat the China Smog? Lessons Learned from the Exquisite Design of Microcirculation for Super Lubrication

讲座名称: Can We Treat the China Smog? Lessons Learned from the Exquisite Design of Microcirculation for Super Lubrication
讲座时间 2017-01-05
讲座地点 北二楼1402室
讲座人 吴千红

应热动力工程系李军教授邀请,美国宾夕法尼亚州维拉诺瓦大学(Villanova University)机械工程系吴千红(Qianhong WU)副教授来访我校,并做学术讲座


讲座名称:Can We Treat the China Smog?
Lessons Learned from the Exquisite Design of Microcirculation for Super Lubrication
讲座人:吴千红(Qianhong WU)副教授
Biological scientists have wondered, since the motion of red cells was first observed in capillaries, how a red cell, with an 8µm diameter, can move with so little friction in tightly fitting microvessels, only 5-6 µm in diameter, and survive 105 passages through microcirculation during a typical lifetime of 120 days without being damaged or undergoing hemolysis. Recent studies (Feng and Weinbaum, JFM, 2000; Weinbaum et al., PNAS, 2003; Wu et al., PRL, 2004) attributed this frictionless motion to the dramatically enhanced hydrodynamic lifting force generated inside the endothelial glycocalyx layer (EGL), a soft porous layer that covers the inner surfaces of our capillaries, as a red blood cell glides over it. Lift generation inside highly compressible porous media is a new concept for porous media flow. In this talk, a systematic study of this concept is presented. Its diverse applications, from red cells moving in a tightly fitting capillary, to human skiing or snowboarding, to a next generation high speed train that glides on a soft porous track made of goose down pillow will be discussed as examples. These applications are chosen for their novelty, but the basic concepts could have important application in the design of soft porous bearings with greatly increased lubrication pressures and long life.



Dr. Qianhong Wu is a tenured Associate Professor of Mechanical Engineering at Villanova University. He is the founding director of Villanova Cellular Biomechanics and Sports Science Laboratory (CBMSS). Dr. Wu received his Ph.D. in Mechanical and Biomedical Engineering in 2005, from The City College of The City University of New York & New York Center for Biomedical Engineering (NYCBE), working with CUNY distinguished Professor, Dr. Sheldon Weinbaum. Before joining NYCBE in 1999, Dr. Wu had a B.S. in mechanical engineering from Huazhong University of Science and Technology (HUST), and a M.S. in electrical engineering from the Institute of Electrical Engineering, The Chinese Academy of Sciences. In August 2005, Dr. Wu started his faculty career as an Assistant Professor at Villanova University. He was promoted to an Associate Professor with tenure in May 2011.

Dr. Wu applies fundamental principles of fluid dynamics to the bio and bio-inspired applications. His research interests include porous medial flow, fluid dynamic and transport aspects of biological systems, cardiovascular engineering, brain biomechanics, cellular mechanisms for mechanotransduction, bone fluid flow, hemodynamics, sports biomechanics, and soft/super lubrication. He has published extensively on these topics. Especially, Dr. Wu’s group is widely recognized for developing a novel experimental and theoretical approach to study the lift generation inside soft porous media. This approach was successfully applied to such diverse problems as the frictionless motion of a red cell in a tightly fitting capillary, the lift forces generated during skiing or snowboarding, the design of a futuristic train track, in addition to classical lubrication theory applications. This research was reported extensively in Science®, Nature®, Scientific American®, PhysicsWeb®, Discover Channel ® and hundreds of public media world widely. These research projects are supported by the National Science Foundation of US (NSF), the National Institute of Health (NIH) and the Office of Naval Research (ONR).

Synergistic Activities

· Member of American Society of Mechanical Engineers (ASME), Biomedical Engineering Society (BMES), American Physical Society (APS), American Society of Engineering Education (ASEE), International Sports Engineering Association (ISEA);

· Reviewer for multiple peer-reviewed journals, including Journal of Porous Media, Journal of Sports Engineering, Journal of Biomechanics, Chemical Engineering Sciences, Journal of Sports Science, European Biophysics Journal, Microvascular Research etc.

· Being invited to give talks in multiple institutions around the world for the pioneering work in soft porous media transport. These institutions include the Chinese Academy of Sciences, Northwestern Polytechnical University of China, Northwest University of China, Lanzhou University, Zhejiang University, Peking University, Beijing Normal University and University of Delaware, etc.

· Organizing symposiums for 8th International Conference on Porous Media & Annual Meeting; chairing technical sessions in professional conferences.

· Faculty advisor to Pi Tau Sigma Honor Society and Bioengineering Minor. Serving on the Laboratory Committee, Graduate Committee, Curriculum Committee and Faculty Search Committee of the Mechanical Department; Serving on the College of Engineering Committee to develop an Interdisciplinary Bioengineering Laboratory for Teaching and Research; Serving on the University Committee to develop a Bioengineering minor at Villanova University, The Villanova Institute for Teaching and Learning (VITAL) Engineering Advisory Committee; and the Faculty Congress Elections and Credentials Committee; chairing the thermal-fluids cluster of Mechanical Engineering Department of Villanova University.

· Attended CCNY Teaching Workshop for Engineering Faculty-2004(sponsored by NSF); Attended Air Force Research Lab Thermal Management workshop, Dayton, Ohio, October 27-28, 2009; Attended the AAC&U (Association of American Colleges and Universities) "Faculty Roles in High-Impact Practices" Conference, Philadelphia, Pennsylvania, March 25-27, 2010; Attended 2010 NIH Regional Seminar on Program Funding and Grants Administration, Philadelphia, Pennsylvania, April 14-16, 2010. Attended 2013 NSF Proposal Writing workshop, Philadelphia, Pennsylvania, October 2nd, 2013.

About Villanova University: Villanova is a private research university and offers BS, MS and PhD degrees.  The Mechanical Engineering Department has 22 full-time faculty members, approximately 350 undergraduate students, and 150 graduate students, The ME faculty are internationally recognized for their research achievements. Villanova university is located 12 miles from Philadelphia along the historic Main Line.  From its founding in 1842 to its position today as a nationally recognized leading university, Villanova is ranked by U.S. News & World Report as the 50th best National University in the U.S. for 2017.

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