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                    | Four professors visited Xi's group during April-May |  
                    | During April-May, 2010, some professors from Europe and Suzhou visited our lab and gave a lecture to the department. Many our group members introduced their work to them and got lots of helpful suggestions. |  
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                              |  1. April 7th , 2010, Charl FJ Faul (University of Bristol, UK): Ionic Self-Assembly for the Production of Complex and Hierarchical  Functional Nanostructured Materials.
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                              |  2. April 30th, 2010, Prof. Gerhard Wilde and Prof. Yong Lei (University of Muenster,  Germany):                                 Interface-controlled materials and 3-D surface nano-patterning. |  
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                              |  3. May 19th, 2010, Hongwei Ma (Suzhou Institute of Nano-tech and Nano-bionics  (SINANO), CAS, China). |  |  |  |  |  |  |