接到wust的PhD program（MSE）面试，求经验

今早接到WUST 的面试邀请，全文如下：

Thank you for applying to the PhD program in the Institute of Materials Science and Engineering at Washington University in St. Louis. Our Graduate Admissions Committee was impressed by your application, and would like to invite you to meet with several members of our faculty via Skype.

Please let us know if you are interested in participating and if you have access to Skype facilities.

Regards,
Prof. Katharine Flores

有被Flores面试过的么？急求经验！博士项目面试会问一些比较专业的问题么？本人本科生，有一些忐忑！谢各位指导