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Argonne National Laboratory, including the Center for Nanoscale Materials (CNM), is closed beginning December 20, 2019, at 5:00 pm CST and will reopen on January 2, 2020 at 7:00 am CST. The CNM suspends user operations during this closure; neither the CNM building nor CNM staff, including administrative support, is available to users at any time during the winter break.
 
The winter break will be followed by a preventive maintenance period from January 6 to January 12, 2020. During this period some capabilities may be unavailable at times and the servicing of some infrastructure systems may affect operations. More information will be sent as the date nears.