Introducing myself to a research mentor I am a PhD student and apart from academic supervisors I also have a mentor. This mentor I haven't met in person yet and have only communicated through email once. But I am going to meet the mentor in person in a conference. My question is how am I going to introduce myself to him? It is important for me to make a good connection with this mentor. Since I wrote that email  long time ago he might not remember me at all.

How do I approach him? Should I mention to him that he is my mentor and then explain to him what I am doing in my research?
Is it okay to say that he is being assigned as my mentor ? How can I say this politely?
Schedule a time to talk in advance.  Email him again, mention how he came to be identified as your mentor (as a reminder, in case he forgot), and ask if you could get lunch with him or meet whenever is convenient during the conference.  In my experience, many researchers have packed schedules during conferences and may not have the time to speak with you when you find him.