Burst pressures for new wafers

I got some new data on the pnc-Si capacitive sensor that has not been published on the blog yet. All of the results are summarized in the Spring MRS Proceedings paper mrsspring09_kavalenka. I also uploaded presentation that I made on MRS in “Presentations ” section of the blog. I will talk more about this data…

Dave and I tested 8 wafers (187, 189, 310, 316, 318, 325, 327, 329) from the last 3 runs and traces of copper can be found within all the wells. However, the amount and position of this contamination varies greatly, with the most particles being located near the top of the well, away from the…

I had some old carbonized samples kicking around and decided to do some high res TEM yesterday to see what a completely occluded pore looked like.  Below is an image showing a blocked pore and adjacent Si nanocrystal. Inside the pore, you can see concentric “rings” of carbon atoms i.e. graphene sheets?  Here is a…

We have previously tested the effects on filtrate volume after a given time as a function of concentration. Moving forward we want to quantify the improvement in filtrate volume when using reverse centrifugation instead of forward centrifugation. Initially, we attempted to create similar plots to those in the preceding post but got the following gobbledeegook:…

Continuation of the work with the Borkholder group (see this post). We put together a couple of videos of EO flow in the streaming potential cell today.  Runs were performed using Ag/AgCl painted wires at ~2.5 V.  Lower voltages weren’t producing very convincing flow rates. Here’s the best video of pumping we obtained: Rec0003_comp The…

I made this post last week concerning testing this procedure to make sure that the resulting solution is in fact fluorescent BSA and not just a mixture of free BSA and free TRITC. Unfortunately, I exercised my right as a rookie to make silly mistakes and confused 5-TMRIA for 5-TRITC! The two particles are very similar…