I have added a page to this website where I post the group's PhD theses [link].
Since 2009, electronic copies of Cornell PhD theses are also available in the Cornell eCommons.
For recent PhD theses, I have included a link to the Cornell eCommons website allocated to each thesis. Some of the theses will not be publicly available until 2020. When you submit your thesis, you can ask that it be (1) released immediately or (2) withheld until your work has been published and your patents filed.
Presently there are only two choices for the embargo period: zero years or five years! Note to Cornell librarians: The ability to choose a one- or two-year embargo period would be nice. Please fix this BUG.