Here are images of actin filaments on Formvar coated 200 mesh nickel grid. Actin filaments were polymerized exactly as before. TEM sample preparation procedure is: 1. add actin solution on Formvar grid and wait 90 sec 2. remove liquid, add…

Last week I attempted to use the ozone cleaner and RTP to grow an oxide on bare 4″ wafers. I used the spectroscopic ellipsometer to measure the film thickness. I found that ~4 min. in the RTP @ 1150 C…

Production this week yielded mixed results. We ran eight wafers through four different RTP temperatures with/without the susceptor. We wanted to test our theory that temperature non-uniformity inside the chamber was causing the morphology change across the wafer. This proved…

Last week I reported wafer 403 showed uniformity across all positions but had a huge amount of pinholes. Wafer 404 (TEOS process & thermal oxide base) was initially annealed at 1000 C and then annealed again at 1000 C for…

Because our membranes are not mono-disperse, we often debate the relative contribution of large pores vs small pores in both diffusive and convective separations. Indeed it is possible that the way pores contribute to transport in these two modes is…

I think some of us have been confusing each other in our discussions of the dependence of flow rate on pore radius. Jim thinks in terms of a single pore, and I agree that there is an r^4 dependence. Therefore,…

15um beads on discolored membrane surface, having some slits where the beads are not found The localization of microbeads suggest that they have fallen across the slits in the membrane Transparent membrane with microbeads on its surface These membranes are…

Dave and I characterized the membrane samples using the 4-point probe system at Kodak research Lab. It is NOT the previously discussed micro-4-point probe. The spacing between two probes is about 2mm. We first tested a quarter bare wafer#388 at…

5nm BSA-Au appears to be 12.7nm.10nm BSA-Au is 18nm. Dilution dependent size change of 5nm BSA-Au. One theory for the size change was that residual BSA was combining with the Au peak and for some reason dilution of the BSA…

The Ozone generator works very nicely. Dave is going to be providing an in-depth user manual for us, so I’ll be somewhat brief. In this first picture, I compare an ozone treated sample against a control. Both ‘droplets’ are 3uL…