国家自然科学青年基金项目No.81202659,福建省自然科学基金项目No.2014J01373,厦门大学新聘教师科研启动基金项目No.ZK1014,福建省大学生创新创业训练项目No.DC2013174;Young Scientists Fund of National Natural Science Foundation of China No.81202659,Natural Science Foundation of Fujian Province No.2014J01373,Scientific Research Staring Foundation for the Newly Appointed Teachers of Xiamen University No.ZK1014,Undergraduate Innovation and Pioneer Training Programs of Fujian Province No.DC2013174