8.Fang LM, Leng Y, Gao P. (2006) “In Vitro Study Bioactivity of HA/UHMWPE Nanocomposites”. 7th Asian Symposium on Biomedical Materials (ASBM-7). August 20-23, 2006. Jeju, Korea. 
    9、P. Gao Shilun Ruan and T.X. Yu (2007) “Carbon Nanotube Polymer Nanocomposites”, 46th Dornbirn Man-Made Fibers Congress, 19-21 September 2007, Austria. ( Invited lecture)
    10、P. Gao, Shilun Ruan and T.X. Yu (2007) “Ultra Strong Gel Spun Ultrahigh Molecular Weight Polyethylene Fiber Reinforced Using Multiwalled Carbon Nanotubes”. 2006 international conference on nanotechnology and advanced materials, 1-3 November 2007, Hong Kong. (invited lecture)
    11、Wenjing Zhang and Ping Gao (2006) “Self-humidifying Pt-Clay/Nafion Nanocomposite Proton Exchange Membr1ne for Low Temperature Fuel Cells”, 1st European 1st European Chemistry Congress: INTERNATIONAL SYMPOSIUM ON POLYMER ARCHITECTURE, Budapest, 30 Aug. – 1 Sept., 2006.
    12、Tang Youhong, Yang Hong Mei and P. Gao (2005). Microrheological studies on the thermotropic liquid crystalline copolyesters containing layered organo nanoclays.  77th Society of Rheology Conference,
    13、Tang Youhong, Yang Hong Mei and P. Gao (2005). TLCP-induced Viscosity Reduction in PE-nanoclay composite. 4th Pacific Rim Conference on Rheology, 7-11, August, 2005. Purple Mountain Hotel, Shanghai, China
    14、Martin Kasing Li, Ping GAO, Xijun HU and Polock YUE (2005). Synthesis of layered-silicate –carbon nanotubes nanocomposites by chemical vapor deposition method. Twelve International Conference on Composites/Nano Engineering, 1-6 August, 2005, Tenerife, Spain.
    15、Tang Youhong, Yang Hong Mei and P. Gao* (2005). Thermotropic LCP induced viscosity reduction in high molecular mass polyethylene-layered silicate nanocomposite. LCP 2005, 14-16 October 2005, Chengdu, China.
    16、Liming Fang,  Ping  Gao and Yang Leng (2004). “Processing HA/UHMWPE Composites for Orthopedic Applications”, 7th World Biomaterials Congress, 17-21 May 2004, Sydney, Australia.
    17、Shilun Ruan, Tongxi Yu and Ping Gao (2004). Toughening of UHMWPE Using Multiwalled Carbon Nanotubes, 4th Conference on Polymer Characterization. Hang Zhou, China. October 9-12, 2004. (keynote lecture)
    18、Michael HK Lee, Martin K.S. Li, Ping Gao, Po Lock Yue (2004). Photocatalytic Oxidation of Salicylic Acid with Novel Oscillatory Flow Photocatalytic Reactor. The 9th International Conference on TiO2 Photocatalysis: Fundamentals and Applications, Montreal, Quebec, Canada, October 24-28, 2004
    19、Martin  Ka Shing Li, Pauline Pui Ling Tang, Ping Gao and Po-Lock Yue (2003).  Photo-oxidation of Salicylic Acid in an Oscillatory Flow Photocatalytic Reactor (OFPR).  The Eighth Internal Conference on TiO2 Photocatalysis: Fundamentals and Applications.  October 26-29, 2003.  Montreal, Quebec, Canada.