PRISM Micro/Nano Fabrication Laboratory Rules
The PRISM MNFL rules evolved in the over 15 years of the lab's presence at Princeton. These rules were developed to ensure that the cleanroom is a safe place to conduct research, that the equipment is maintained so that all may use it, and that users have the freedom to explore new materials and processes.
As a new user, you must read through the information below and then sign a copy of it indicating that you have read and understood this information. If you have questions regarding the rules please contact Joe Palmer at jpalmer@Princeton.edu.
All operations must be undertaken with the safety of both the individual user and other users as the primary consideration. Ignorance of the rules, working under “pressure”, lack of common sense, language difficulties, carelessness, and haste are not adequate excuses for unsafe behavior.
The access of everyone to the cleanroom depends on maintaining a safe working environment. A series of thoughtless chemical violations or a single serious personal injury could result in severe restriction on the cleanroom use or closing of the cleanroom. Rule violations are to be reported to the staff.
The users are not allowed to change common recipes, leave vacuum chambers vented, process unusual samples in equipment restricted to a particular sample type, or leave the equipment in a state unfamiliar to the others. Users should reserve equipment time judiciously. All unattended chemical bottles, beakers, etc., must be labeled or otherwise warn other users of their contents. Users are required to clean up any work area (counters, equipment, floors) they have been using. This may mean cleaning up areas that have been dirtied by others. Users are expected to report immediately any problem with the equipment to the cleanroom management and note it in the logbook.
- The cleanroom will be entered and exited by the showers – using his/her OWN prox card, unless there is an alarm status (Toxic Gas Monitoring System or the Fire Alarm).
- One and only one user will enter the cleanroom shower at a time, taking the whole 15 s shower.
- Users will wear a full cleanroom suit.
- Appropriate eye protection will be worn. Splash goggles will be worn when working at any hood.
- Suits and hoods will be replaced every seven days of use, or if dirty or torn.
- Boots will not be stored in lockers.
- Undergraduate Hours: Monday - Friday, 9:00 am to 5:00 pm. Hours are extended if monitors are present.
- Other users can use the facility 24/7 based on restrictions in following sections.
Only authorized personnel are allowed to use the cleanroom equipment unsupervised. To become an authorized user you must be trained by a superuser, and given authorization by Joseph Palmer, Conrad Silvestre, Pat (George) Watson, Yong Sun, or Bert Harrop. No user will be held responsible for accidental equipment damage if he/she notifies PRISM staff of such damage in a timely manner. Whenever a piece of equipment is used, the logbook will be filled out without exception.
Authorized users must reserve equipment that they plan on using for longer than 15 minutes. Equipment reservation is limited to 3 consecutive hours of time on most machines. Refer to individual tools for exceptions.
Outside User Equipment Reservation
As the PRISM MNFL’s primary purpose is to serve Princeton students, industrial and outside academic cleanroom users may only reserve equipment Monday through Friday.
- 9:00 am to 5:00 pm a maximum of 3 hours total
- 5:00 pm to 11:00 pm a maximum of 2 hours total
- 11:00 pm to 9:00 am – no time limit
Extensions will be granted on a case-by-case basis, as some equipment and processes require more time.
Restricted Equipment & Use of Lab
All equipment can be used by authorized personnel during normal business hours, Monday through Friday, 9:00 am to 5:00 pm or if a Safety Monitor is present. Otherwise, some use of some equipment requires a Buddy, according to the following rules:
1. Anyone working in the hoods in PVD or the 790 Room shall required to have another cleanroom user to be in the room.
2. Anyone working in any other PRISM MNFL room on the Fourth Floor shall be required to have a designated cleanroom user to call or visit them approximately every 30 minutes.
3. All buddies must sign on the Buddy Sheet located in the Changing Room.
Monitors are available on a variable schedule that the user is expected to be aware of, as it is posted and announced periodically. The typical schedule is M-F from 5pm to 10pm and Saturday from 1pm to 6pm when fall and spring classes are in session. They are required to check all users in all cleanroom areas every 30 minutes and fill out a “Monitor sheet”. A monitor must be present in the room if any user is working in any solvent or acid hood, other than the hoods located in the photolithography room. No user is to simply assume that a monitor is on duty; they must make sure or assume that there is no monitor.
A Buddy must be a registered cleanroom user and must be located in the E-Quad, or in the cleanroom at the time of duty.
Additional User Duties
Interested users may serve as superusers or cleanroom committee members. The remaining users are obligated to spend 1 day a year helping out in the cleanroom during the periodic cleanings.
All guests must be cleared by the PRISM Lab Staff before entering the cleanroom. Guests are admitted to the cleanroom for the purposes of a tour or observation only; no guests are allowed to process devices or use equipment.
Breaking the Rules
The above are MINIMUM penalties.
For a pdf version of the rules click here