UC-Berkeley Faculty Expertise Database
http://vcresearch.berkeley.edu/faculty-expertise

A Rough Guide to Finding a Research Mentor in the Physical Sciences at Cal, by S.S. Rupa Datta
http://research.berkeley.edu/haas_scholars/documents/physcimentor.html

How to Find a Lab Position (MCB Undergraduate Program)
http://mcb.berkeley.edu/undergrad/research/research/lab/

Interview Advice from Employers, UCB Career Center (very applicable to preparing for a first meeting with a potential faculty mentor):
https://career.berkeley.edu/Article/020301b.stm