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For this experiment, I looked into the stability of RTP treatment.  Specifically, I tested discoloration rates for chips at different time points after I did RTP.  The idea was to see if the beneficial effects of RTP depended on the time that chips were stored after RTP processing.  Here’s the data: All chips were from…

As a continuation of the substrate bias series, I deposited a 15 nm film with 05 W substrate bias and annealed at 1000 C. TEM shows that this condition generates a 13.4% porosity and a max pore size of ~40 nm! Here is a comparison of all the bias conditions tested thus far: I believe…

Here is a slightly enhanced version of Mike’s latest hydraulic permeability data for commercial devices with PES membranes. The data at 22 and/or 34 PSI are a bit strange. Still the long-term trend seems downward. Similar data for PNC-Si membranes should show no pressure dependence. We need to get a version of this figure that…

Sarah and I did some more gold separations with 10, 20, 40, 50, 60, 80 and 100 nm Au particles.  We used the “clean” water purchased from the medical center.  Same as last time, we diluted the “as-bought” gold 3 parts to 1 and loaded each cell with 300 uL before pressurizing at 5 psi…

Introduction Aline and SiMPore are producing devices at much higher manufacturing rates than we were capable of in the McGrath lab. In order to verify that these manufactured devices are capable of growing cells and allowing for cell survival, live/dead assays were performed on human umbilical vein endothelial cells (HUVECs) grown 48 hours on either…

When the HUVECs were first brought up, the first test for me to perform was to see how they reacted to CMFDA and repeated fluorescent excitations.  Based on the implications from previous research (summarized here), there is the possibility of harm or phototoxicity from the dye.  Since HUVECs are more valuable and ‘fragile’ than either…