From mtang at snf.stanford.edu Tue May 1 20:15:26 2001 From: mtang at snf.stanford.edu (Mary Tang) Date: Tue, 01 May 2001 20:15:26 -0700 Subject: Wet Bench Retraining Message-ID: <3AEF7BCE.FEC17FF7@snf.stanford.edu> Wet Bench Users (wbdiff, wbsilicide, wbnonmetal, wbgeneral): I am sure most of you would agree that things have been getting a bit out of control at the wet benches. Many people are not certain of the proper procedures for handling chemicals, cassettes, and wafers. And a few people don't seem to be exercising common courtesy. There are going to be a number of changes to the wet benches, in terms of operating procedures, policies, and equipment (see below). These changes we hope will make the wet benches both safer and easier to use. The first thing we would like to do is to make sure everyone is starting from the same, basic understanding of how to use these benches. New operating procedures have been written for these wet benches. Everyone currently qualified on these wet benches will be required to read these operating procedures and take written tests to indicate their understanding of the procedures. This policy is effective immediately. There will be a one month grace period in which currently qualified users will be able to remain qualified. After May 31, anyone who has not turned in and passed the written test will lose their qualification. These tests will be available in Uli and Henry's office, CIS room 146, located next to the CIS Xerox/FAX room, under the stairs. A final word about the tests: there really is nothing to prevent you from sharing answers -- but please don't. The purpose of these tests is not to screen people from working at these benches, but to educate everyone on their proper and safe use. Please abide by the Stanford Honor Code (even if you are from Cal.) By submitting your tests you are saying that you understand and will follow these procedures -- and everyone will be expected to enforce them. Some of the other changes that are coming up: 1. The Nanostrip hot pot will be converted back to a sulfuric/peroxide hot pot. (We haven't given up on Nanostrip, but just put it aside until we understand it better.) The announcement is imminent. 2. We are in the process of reprogramming to controllers so that hot pots can be aspirated at a higher temperature. This also requires checking the facilities to make sure we can handle this. Acid changes will be much faster once this is done. 3. There is serious discussion about gloves, safety gear and general ergonomics. If you have any suggestions or ideas, the SNF staff would appreciate hearing them. If you have any questions regarding this requirement, or any of the specific wet bench procedures, don't hesitate to contact the SNF staff. Mary -- Mary X. Tang, Ph.D. National Nanofabrication Users' Network Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at snf.stanford.edu From jhaydon at snf.stanford.edu Mon May 7 16:46:07 2001 From: jhaydon at snf.stanford.edu (jhaydon) Date: Mon, 07 May 2001 16:46:07 -0700 Subject: Right hand hot pot Message-ID: <3AF733BF.6742CDE5@snf.stanford.edu> To all The right hand hot pot is now operational. the temperature set point is 120 degrees C it should not go above 130 degrees C after solution has stabilized. The hot pot can now be aspirated at 70 degrees C. Jim H From latta at snf.stanford.edu Tue May 8 11:35:43 2001 From: latta at snf.stanford.edu (Nancy Latta) Date: Tue, 08 May 2001 11:35:43 -0700 Subject: Changes at Nonmetal Wetbench Message-ID: <3AF83C7F.F4FDC6C@snf.stanford.edu> Folks, Due to popular demand, we have removed the Nanostrip from the right hand hot pot and replaced it with sulfuric acid hydrogen peroxide (piranha). The operating temp has been increased to 120C The right hand and left hand hotpots are now identical. Please note the the temp to drain either of the hot pots has been increased to 70C in an effort to decrease the amount of time needed to cool down to dump temp. The acid supply cart, or pass-through, will no longer stock Nanostrip. That space has been changed back to sulfuric acid. Nanostrip will be kept in the stckroom and is available by special request. It may be used at wbgeneral or wbgaas. From sanli at piezo.Stanford.EDU Sun May 13 21:16:57 2001 From: sanli at piezo.Stanford.EDU (Sanli Ergun) Date: Sun, 13 May 2001 21:16:57 -0700 (PDT) Subject: 4 inch casettes Message-ID: There are only 2 casettes left at the bench. Please return them. Sanli From jhaydon at snf.stanford.edu Tue May 15 07:37:37 2001 From: jhaydon at snf.stanford.edu (jhaydon) Date: Tue, 15 May 2001 07:37:37 -0700 Subject: Aspiration temp Message-ID: <3B013F31.21CA943F@snf.stanford.edu> To all: The aspiration temperature setting for the hot pots on wb nonmetals has been increased to 120 degrees C. this is also the set point temperature. The other wet benches still have a lower setting but will be changed when we are able to do so. Jim H From uli at snf.stanford.edu Wed May 16 17:21:42 2001 From: uli at snf.stanford.edu (Uli Thumser) Date: Wed, 16 May 2001 17:21:42 -0700 Subject: Reminder References: <3AEF7BCE.FEC17FF7@snf.stanford.edu> Message-ID: <3B031996.13072FD7@snf.stanford.edu> Mary Tang wrote: > Wet Bench Users (wbdiff, wbsilicide, wbnonmetal, wbgeneral): > > I am sure most of you would agree that things have been getting a bit > out of control at the wet benches. Many people are not certain of the > proper procedures for handling chemicals, cassettes, and wafers. And a > few people don't seem to be exercising common courtesy. > > There are going to be a number of changes to the wet benches, in terms > of operating procedures, policies, and equipment (see below). These > changes we hope will make the wet benches both safer and easier to use. > > The first thing we would like to do is to make sure everyone is starting > from the same, basic understanding of how to use these benches. New > operating procedures have been written for these wet benches. Everyone > currently qualified on these wet benches will be required to read these > operating procedures and take written tests to indicate their > understanding of the procedures. This policy is effective immediately. > There will be a one month grace period in which currently qualified > users will be able to remain qualified. After May 31, anyone who has > not turned in and passed the written test will lose their qualification. > > These tests will be available in Uli and Henry's office, CIS room 146, > located next to the CIS Xerox/FAX room, under the stairs. > > A final word about the tests: there really is nothing to prevent you > from sharing answers -- but please don't. The purpose of these tests is > not to screen people from working at these benches, but to educate > everyone on their proper and safe use. Please abide by the Stanford > Honor Code (even if you are from Cal.) By submitting your tests you are > saying that you understand and will follow these procedures -- and > everyone will be expected to enforce them. > > Some of the other changes that are coming up: > 1. The Nanostrip hot pot will be converted back to a sulfuric/peroxide > hot pot. (We haven't given up on Nanostrip, but just put it aside until > we understand it better.) The announcement is imminent. > 2. We are in the process of reprogramming to controllers so that hot > pots can be aspirated at a higher temperature. This also requires > checking the facilities to make sure we can handle this. Acid changes > will be much faster once this is done. > 3. There is serious discussion about gloves, safety gear and general > ergonomics. If you have any suggestions or ideas, the SNF staff would > appreciate hearing them. > > If you have any questions regarding this requirement, or any of the > specific wet bench procedures, don't hesitate to contact the SNF staff. > > Mary > > -- > Mary X. Tang, Ph.D. > National Nanofabrication Users' Network > Stanford Nanofabrication Facility > CIS Room 136, Mail Code 4070 > Stanford, CA 94305 > (650)723-9980 > mtang at snf.stanford.edu From mtang at snf.stanford.edu Wed May 30 15:28:08 2001 From: mtang at snf.stanford.edu (Mary Tang) Date: Wed, 30 May 2001 15:28:08 -0700 Subject: Re-qualification Reminder Message-ID: <3B1573F8.50C1CF0A@snf.stanford.edu> Greetings wet bench users -- Just a reminder that tomorrow is June 1. No, your PC will not be hit by the sulfnbx.exe virus. But you may lose your ability to enable wbdiff, wbsilicide, or wbnonmetal, if you have not yet turned in the appropriate written tests (available in Uli & Henry's office). For uninterrupted access to these stations, please turn them in this week. After Monday, current users not on Uli's list of favorite people will be subject to losing their qualifications on these stations and will have to have jump through hoops (or at least take these tests and get them reviewed) before being requalified. Mary -- Mary X. Tang, Ph.D. National Nanofabrication Users' Network Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at snf.stanford.edu From mtang at snf.stanford.edu Wed May 30 17:32:16 2001 From: mtang at snf.stanford.edu (Mary Tang) Date: Wed, 30 May 2001 17:32:16 -0700 Subject: [Fwd: Re-qualification Reminder] Message-ID: <3B159110.4B94F581@snf.stanford.edu> Yes, me again -- As several people have pointed out, tomorrow is the 31st (darn, I was so hoping it was already Thursday!) and there's actually another day's reprieve. As also pointed out, I neglected to mention that requalification also applies to wbgeneral. To reiterate, there are a total of five tests for all these wet benches: - wbgeneral, wbdiff, wbsilicide, and wbnonmetal each have a station specific test. - in addition, there is a single test for wbdiff, wbsilicide, and wbnonmetal which covers those procedures and equipment which are the same for these stations. All tests are available in Uli & Henry's office and should be returned there when completed. Please [continue to!] direct questions, comments [and complaints] to me. Thanks, Mary -------------- next part -------------- An embedded message was scrubbed... From: Mary Tang Subject: Re-qualification Reminder Date: Wed, 30 May 2001 15:28:08 -0700 Size: 1327 URL: From mtang at snf.stanford.edu Thu May 31 08:56:58 2001 From: mtang at snf.stanford.edu (Mary Tang) Date: Thu, 31 May 2001 08:56:58 -0700 Subject: Wet Bench Requalification... Message-ID: <3B1669CA.C6A6EF3B@snf.stanford.edu> Hello all -- I've been inundated with emails regarding the wet bench tests! And yes, indeed, the new policy is that the "Multi-Wet Bench" test DOES cover wbsilicide, wbnonmetal, and wbdiff. Only wbgeneral has its own test. (My apologies for the misinformation in the last email -- I was on vacation when the policy change was made and was thus clueless. There are still individual tests for each wet bench -- and I invite you all to at least take a look at them [I see there's going to be a rush to Uli's now - yeah, right]. Future users WILL have to take these individual tests in addition to the Multi-Wet Bench test -- so lucky you!) By the way, Uli says that very few people are filling out the section correctly on what to write on the "blue cards" for the wbgeneral test. This is probably because the operating procedures are not explicit (but, rather, implicit) on this subject. The purpose of the blue cards is to let everyone know what chemicals are being used. The policy is to use chemical names, rather than jargon (like "BOE" or "Piranha") because everyone should know what nasties they've just poured into a beaker, and because some jargon just doesn't cut it ("Resist Stripper" -- yes, haven't we all seen this?) No, people are not going to be failed on the test because of this -- BUT, make sure your blue cards are correct at wbgeneral (you are forewarned!) Mary -- Mary X. Tang, Ph.D. National Nanofabrication Users' Network Stanford Nanofabrication Facility CIS Room 136, Mail Code 4070 Stanford, CA 94305 (650)723-9980 mtang at snf.stanford.edu