The Columbia University CISE (Center for Integrated Science and Engineering) Clean Room is open to all researchers at Columbia University, with the proper training, including undergraduates.  Since the Clean Room is largely funded by the Nanoscale Science and Engineering Center grant, students in the following programs will almost certainly make use of the facilities provided by the CISE Clean Room.

Nanoscale Science and Engineering Center Research Experiences for Undergraduates (REU)

http://www.cise.columbia.edu/nsec/outreach/courses/