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From caseysj at umich.edu Sat Apr 1 10:23:32 2023 |
From: caseysj at umich.edu (Casey Jackson) |
Date: Sat, 1 Apr 2023 10:23:32 -0400 |
Subject: [labnetwork] Anodic Bonding |
In-Reply-To: <627376754.216534.1680208714984@webmail2b.networksolutionsemail.com> |
References: <627376754.216534.1680208714984@webmail2b.networksolutionsemail.com> |
Message-ID: <CANJOU1eoikELQkfgEJoXo2559esaObVu=0RD7xKuREXK8gywUw@mail.gmail.com> |
Hi Edward, |
I'm a but of a novice no both of these fronts but I do have a little |
experience with both so I'll share my thoughts: |
First my assumptions: |
- Raman spectroscopy is tuned to respond to symetrically bonded electron |
pairs ei will give a signal for Si-Si but wont for Si-O. |
-Anodic bonding creates a bond by charge separating ions from the ion rich |
SiO2 glass into the ion deficient native SiO2 on the Si surface. |
If both these assumption are true then running your anodic bonding process |
for a reduced period of time may eliminate your issue. |
If you are pushing your ions through the entirety of your native oxide such |
that the ions are now positioned directly on top of your Si layer, you may |
have some Si-Si bonded electrons that have slightly different resonance due |
to the presence of local ions. This would create broader peaks in your |
Raman and possibly the excess fluorescence your seeing. |
Again my experience with this is limited on both Raman and Anodic bonding |
but my first guess would be to reduce the time you allow the bond to form. |
I hope this helps and good luck! |
*Best,* |
*Casey Jackson - UM Staff & Student* |
*Equipment Engineer | **LNF * |
*MPA Class 2026 | FSPP* |
On Fri, Mar 31, 2023 at 5:47?AM edward.gonzales < |
edward.gonzales at armonicatech.com> wrote: |
> Does anyone have experience with anodic bonding? I have successful bonds |
> with various thickness of SiO2 on Si, 300nm to 1um. The problem is the |
> fluorescence seen duing Raman Spectroscopy. Would anyone know what may |
> cause this? |
> |
> Thanks, |
> Edward |
> _______________________________________________ |
> labnetwork mailing list |
> labnetwork at mtl.mit.edu |
> https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork |
> |
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From James.Grant at glasgow.ac.uk Mon Apr 3 08:38:54 2023 |
From: James.Grant at glasgow.ac.uk (James Grant) |
Date: Mon, 3 Apr 2023 12:38:54 +0000 |
Subject: [labnetwork] HBr Gas Cabinets - UK Vendors for Purchase/Service? |
Message-ID: <LO2P302MB0043E732174B029DD94C0E4CB0929@LO2P302MB0043.GBRP302.PROD.OUTLOOK.COM> |
Hello, |
We are looking to purchase a replacement gas cabinet for our HBr supply. We've not had to purchase a gas cabinet ourselves for many a year. Additionally we have found it very difficult to find vendors who will service/maintain our existing gas cabinets. |
In the course of my, very brief and very incomplete research, came across a helpful labnetwork email exchange from 2016: |
https://mtl.mit.edu/pipermail/labnetwork/2016-April/002170.html |
I have found that Matheson (https://store.mathesongas.com/gas-cabinets/) also have very useful literature on the topic. |
We have found several UK based companies who do supply cabinets (Eb gas<https://ebgasservices.com/>, Spectron<https://www.cambridge-fluid.com/products/chemical-and-gas-delivery/default.aspx>, Gas Control Technologies<https://www.cambridge-fluid.com/products/chemical-and-gas-delivery/default.aspx>, Cambridge Fluid Systems<https://www.cambridge-fluid.com/products/chemical-and-gas-delivery/default.aspx>). |
My question is, can anyone recommend any UK based vendors of gas cabinets? Would appreciate if people could share their experiences/thoughts on the topic. |
Cheers, |
James |
Dr. James Paul Grant |
Research Engineer in Plasma Processing |
Plasma Processing Group |
james.grant at glasgow.ac.uk<mailto:james.grant at glasgow.ac.uk> |
[cid:image001.png at 01D96630.AB34D510] |
www.JWNC.gla.ac.uk<http://www.jwnc.gla.ac.uk/> |
[cid:image002.png at 01D96630.AB34D510] LinkedIn.com/company/JWNC |
[cid:image003.png at 01D96630.AB34D510] @UofG_JWNC<https://twitter.com/uofg_jwnc> |
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From mccleery.7 at osu.edu Mon Apr 3 12:35:14 2023 |
From: mccleery.7 at osu.edu (McCleery, Mary) |
Date: Mon, 3 Apr 2023 16:35:14 +0000 |
Subject: [labnetwork] FW: Habitual late payments from external clients |
In-Reply-To: <CH2PR01MB57527A13FB8B710637E3DC15B6819@CH2PR01MB5752.prod.exchangelabs.com> |
References: <DM5PR03MB30987B3B2F18AFA721871A2786809@DM5PR03MB3098.namprd03.prod.outlook.com> |
<CH2PR01MB57527A13FB8B710637E3DC15B6819@CH2PR01MB5752.prod.exchangelabs.com> |
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