By email(most direct way):
 

Departmental:	zliu@physics.umn.edu (For Research and Education)
Personal:	tarzanliu@hotmail.com(For Friends and et.c)

By phone:(See Available Time)
 

Lab:	1-612-6241876 (9:00am-5:00pm)
Home:	To be posted(Any time except 12:00am-8:00am)

By mail:
 

School:	Mr. Zengqiang Liu 116 Church ST SE Minneapolis, Minnesota 55455
Home:	Due to my frequent move, I never use it.