As per Chris request, here is a photo with a brief description. Sorry the image is still not good… the surface of the plastic reflects lights and it is transparent, plus I am using a poor camera. But I hope the description is useful and anyway tomorrow we can check it out in the meeting!
Since Paul sent an email saying he will be on leave from this week, I spent some time in the hopeman metal workshop with Paul working on our second diffusion chamber before he leaves. We actually failed four substrates before we made it. Here is the enhanced version. First, we made the hole through the…
Last week Jess and I did some diffusion tests using the prototype chamber. We observed there was some fluorescence background noise from the plastic substrate. So we decided to make the buffer well (the hole on the substrate) all the way through the Polycarbonate sheet and seal the well with a slide. We can see…
The only problem is the diffusion is very fast with defects in there.
I worked with Paul this afternoon and finally we highly suspect the raw material used for the prototype diffusion chamber could be Polycarbonate. Paul could not provide direct evidence for the material source since he did not keep any purchase orders or materials data sheet… However, we did check our chamber with another plastic board…
Attached are the photos taken under DIC and Rhodamine channels, using the new diffusion chamber. I can clearly observe Rhodamine pass to the lower hole of the chamber, under the Rhodamine channel by eye ball. But from what I got using the Matlab software, it looks weird because both DIC and Rhodamine photos look very…
I have tested the new diffusion chamber shown in a yesterday’s post. The idea of our original design works. But there are several problems with this prototype: – Paul used a very thick material to build the clamp, which blocks the objective of the microscope system; – The upper hole in the substrate, designed for…
Our new diffusion chamber is finally here. Take a look at the photos first – in our next group meeting you can see the real thing. Today I will test its usability and reliability. Please keep in mind this is only the prototype, there must be upside space for improvement.
Electron Beam Evaporator Protocol (V_1.0) – Lingyun Here is the first version protocol of the electron beam evaporator at RIT clean room. There is not too much to put down here – the best way to learn this is to attend the training facing the real machine tool. I will try to provide some photos…
Wafer#502 was coated with 10nm_Ti & 15nm_Au on Friday. I will pick out pinhole free membranes later today. I will also try to get TEM images at Karen’s lab (medical center). // The RIT clean room is closed this week.