No individual meetings today …

Jamie asked me to post these images of our membranes taken by Dr. Xiao Zhang from Hitachi.  They used a 300 kV tool to acquire these micrographs. The spacing between the atoms (striations) tells us the crystallographic orientation; most of the nanocrystals we see are in a (111) orientation.  It’s interesting that the perimeter of…

With the help of Henry and Greg, the Fisher team has been busy learning the basics.  John and Ryan have learned some PDMS microfluidics-making and will have their first chips ready on Tuesday.  We have also been playing with the silhouette printer, studying our options for producing some simple devices.  Finally, we produced some chip designs to…

I ran another diffusion cell last week using Human Albumin and Cytochrome C. I increased the volume of PBS because the last time I ran the gel for this mixture, the band for cytochrome c was very prominent. Out of the three chambers of the diffusion cell that I ran, only one of them actually…

Below are drafts of all the figures I am planning on incorporating into my upcoming model paper. I believe I am done with data collection at this point. Data in figures not marked “NEW” probably needs to be updated. Note that all model curves are calculated with no fitting parameters. They are derived from base principles. That’s why…

This is a followup to my previous post, found here. Some of the data in that post is now outdated and will be replaced with newer data here. I’ve added to the comparison the diffusion of cytochrome C and urea through a polyethersulfone “high-flux” membrane. This material is commercially available just like the cellulose triacetate….