text stringlengths 1 2.97k |
|---|
-Dave |
Dave Hollingshead |
Manager, Research Operations |
The Ohio State University |
Nanotech West Labs |
Suite 100, 1381 Kinnear Rd, Columbus, OH 43212 |
614.292.1355 Office |
hollingshead.19 at osu.edu<mailto:hollingshead.19 at osu.edu> / nanotech.osu.edu<http://nanotech.osu.edu> |
Pronouns: he/him/his |
-------------- next part -------------- |
An HTML attachment was scrubbed... |
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20230622/acd4530b/attachment.html> |
From Howard.Northfield at uottawa.ca Thu Jun 22 13:48:49 2023 |
From: Howard.Northfield at uottawa.ca (Howard Northfield) |
Date: Thu, 22 Jun 2023 17:48:49 +0000 |
Subject: [labnetwork] Alternative distributor for SPR 955? |
In-Reply-To: <B34D6C12-EC1E-4029-B8C1-8A8639AFC5A2@ucsb.edu> |
References: <QB1PR01MB30250469B798A374EF50248E9F5DA@QB1PR01MB3025.CANPRD01.PROD.OUTLOOK.COM> |
<B34D6C12-EC1E-4029-B8C1-8A8639AFC5A2@ucsb.edu> |
Message-ID: <QB1PR01MB3025895B34259FD9FEE1BC0D9F22A@QB1PR01MB3025.CANPRD01.PROD.OUTLOOK.COM> |
Yes, I have a jug of SPR955 that is a couple of years past expiry. It has been kept refrigerated and decanted in 300ml amounts (after warming to room temp) for decanting to users ... and is working fine. |
Howard |
________________________________ |
From: Demis D. John <demis at ucsb.edu> |
Sent: Wednesday, June 21, 2023 6:42 PM |
To: Howard Northfield <Howard.Northfield at uottawa.ca> |
Cc: Price, Aimee <price.798 at osu.edu>; labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu>; Ramsey, Keith <ramsey.435 at osu.edu> |
Subject: Re: [labnetwork] Alternative distributor for SPR 955? |
Attention : courriel externe | external email |
We have got the ?extension of expiration? notices from manufacturer, and have done internal tests showing these PR?s work well beyond the expiration dates (when bulk is stored in refrigerator) - they appear to be good at least 1 year beyond expiration. We tested UV6, UVN30, and one of the SPR?s if I remember correctly. |
-- Demis |
On Jun 21, 2023, at 16:07, Howard Northfield <Howard.Northfield at uottawa.ca> wrote: |
? |
I am pretty much now used to getting materials only months from expiry from all sources. |
Howard Northfield |
Research Associate |
Advanced Research Complex (ARC) |
University of Ottawa |
________________________________ |
From: labnetwork <labnetwork-bounces at mtl.mit.edu> on behalf of Price, Aimee <price.798 at osu.edu> |
Sent: Tuesday, June 20, 2023 9:50 PM |
To: labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu> |
Cc: Ramsey, Keith <ramsey.435 at osu.edu> |
Subject: [labnetwork] Alternative distributor for SPR 955? |
Attention : courriel externe | external email |
Dear Labnetwork, |
Does anyone purchase SPR 955 (or any other Shipley/Dupont products) from a distributor other than Kayaku? We have had numerous issues with different materials. In this case, we need to either find a different distributor or begin qualifying another resist, probably both. The current issue is that we purchased a gallon of SPR955 which was ?in stock.? It arrived last week with an expiration date of 7/8/23. Kayaku?s response was that they were required to ship what they had on hand first and would ask for an extension to the expiration date from the manufacturer. I am still hoping for a better response and solution than that but need to find an alternative in the meantime. |
If anyone works with a different distributor for Shipley resists, I?d love to hear your experience. I?ll share the final solution from Kayaku and summarize any responses for alternatives. |
Thank you, |
Aimee Bross Price |
Manager, Nanofabrication |
The Ohio State University |
Nanotech West Lab |
Institute for Materials Research |
1381 Kinnear Road |
Suite 100 |
Columbus, OH 43212 |
614-292-2753 |
Price.798 at osu.edu<mailto:Price.798 at osu.edu> |
Nanotech.osu.edu |
Pronouns: she/her/hers |
Commercial Chair, 66th International Conference on Electron, Ion, Photon Beam Technology and Nanofabrication (EIPBN) |
May 30-June 2, 2023, San Francisco, CA |
Conference Chair, 67th International Conference on Electron, Ion, Photon Beam Technology and Nanofabrication (EIPBN) |
| https://eipbn.org<https://eipbn.org/> | |
_______________________________________________ |
labnetwork mailing list |
labnetwork at mtl.mit.edu |
https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork |
-------------- next part -------------- |
An HTML attachment was scrubbed... |
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20230622/9aa726f9/attachment.html> |
From hit.kamble at gmail.com Thu Jun 22 21:19:33 2023 |
From: hit.kamble at gmail.com (Hitesh Kamble) |
Date: Fri, 23 Jun 2023 06:49:33 +0530 |
Subject: [labnetwork] Heidelberg MLA150 SU-8 Exposure Dose |
In-Reply-To: <SA1PR01MB6544488F2AF7FBED45495CE2F322A@SA1PR01MB6544.prod.exchangelabs.com> |
References: <SA1PR01MB6544488F2AF7FBED45495CE2F322A@SA1PR01MB6544.prod.exchangelabs.com> |
Message-ID: <CANpP3DQdVjsfedgvuY-nUL1sfTgU0oWRArbxL48qehyDSJ70BQ@mail.gmail.com> |
Hello Dave, |
I do not know on which material you are coating and expose but certainly it |
behaves this way because of process conditions and energy absorption while |
exposure (down the line you need to tune parameters and understand UV |
penetration). |
Again if it is pre-diluted or diluted with T-thinner, store conditions and |
expiry matters. |
Regards, |
Hitesh |
On Fri, 23 Jun 2023 at 1:57 AM Hollingshead, Dave <hollingshead.19 at osu.edu> |
wrote: |
> Dear Labnetwork, |
> |
> |
> |
> We have found that exposure of SU-8 on our MLA150 tool (using the 375nm |
> laser) seems to require very high doses. Even thin ~500nm thick films |
> (using SU-8 2000.5) have required doses on the order of 1200mJ/cm2 to |
> fully expose. This is 15-20x the recommended dosage from both the datasheet |
> and what we estimate is the exposure dose used on our filtered contact |
> aligners. Thicker films follow the same trend, but not necessarily in a |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.