POSTED 11/03/2023

The CNF Cleanroom will be open Friday, 11/3/23 from 8 AM to 6PM Eastern.

We will open extended hours Tuesday and Wednesday, 11/7/23 and 11/8/23, until 8PM. Also, Tuesday and Wednesday, 11/14/23 and 11/15/23, we will extend our hours staying open until 8PM. 


CNF prides itself on providing a world-class, open user facility with flexible policies to meet the needs of our broad community. To comply with New York State’s updated building codes that impact Cornell’s Duffield Hall, the home of CNF’s cleanroom and select 3rd floor research labs, the CNF cleanroom will operate with a reduced evening and weekends schedule for a limited time.

Starting Tuesday, October 10th and continuing for 4-7 weeks, the following schedule will be in place:

• Cleanroom access Monday through Friday, 8:00 AM to 6:00 PM Eastern. No evening or weekend access.
• CNF 2nd floor labs, Phillips Hall packaging lab, and the CAD room are open 24/7 with no change.

We understand that this limits the availability of CNF resources for some of our users, and we apologize for the short notice. Cornell is working diligently on a long-term solution so that CNF can return to 24/7 operation as soon as possible.

A few more details are included below.

If you have questions, please contact Ron Olson (olson@cnf.cornell.edu).


All processes need to be completed by 6pm, if you need to perform a post-process clean, please allow time before 6 to do that. If your process requires a long deposition that extends beyond these work hours you will need to pause and restart the process the following day - please work with staff on this if you have questions regarding how to set this up on the tools.

These hours apply to all researchers and staff. Please understand that staff will not be able to swap targets, perform tool maintenance, or perform remote processes outside of these hours.

Lastly, the recent fire code updates require a slight change in our lab evacuation protocol:

Starting this week, in the event of a lab evacuation (TGMCS gas alarm or Fire alarm), all researchers that were inside the cleanroom at the time of the alarm need to check in with the CNF staff manning the Fire Control room once they exit the building. This room is located in the entrance vestibule at the north end of the Duffield Atrium (the Duffield Entrance that faces the Feeney Way/Campus road intersection.) We will use the lab occupancy screen to confirm that everyone did successfully exit the cleanroom space.

We understand this is a significant departure from our normal routine and ask for your co-operation and patience while Cornell management works on a longer term solution to the CNF operation availability.