NRG

Let’s get a blast-from-the-past and go through a bunch of drawers in the lab!  I spoke with Jim and it seems like it might be best to schedule it during next regularly slotted Tuesday NRG mtg.  So let’s plan on meeting downstairs in the lab on 2-19 at 9:45 am. Also, I bought an assortment…

Using the remaining 10nm EA-treated chips (all of the 15nm EA-treated and all of the PEG-lyated chips had either been used or broken) I was able to pass cytochrome C through Sepcons. As usual, yields were low (~8-12uL) but the curves were of high quality. The passage of Cytochrome C is not surprising because we…

We have re-started the PEG x-linking project at RIT. One of the goals is to create microwells made of PEG on top of a membrane in order to culture individual cells or small colonies of cells with the potential for a co-culture with a confluent monolayer on the opposite side. PEG is available as PEG-Diacrylate…

We wanted to test the effects of changing the substrate bias during the Si deposition step similar to what Dave Fang had done so many years ago.  Attached is a couple of plots showing the effect of varying substrate bias on pore size and porosity.  He used 15 nm thick a-Si and an anneal at…

I’m not sure how many people in the current group have read all the papers that we have published, but a critical one was a JACS paper from Shigeru Amemiya where he used his Scanning ElectroChemical Microscopy (SECM) to probe the permeability of our membranes at the micron scale.  In the supplement to this paper,…

  On Wednesday we ran several separations using both the EA and PEG treated membranes. The treatment process had damaged many of the chips. Of the 10 treated 10nm PEG chips, 2 survived. Of the 10 treated 15nm PEG chips, 2 survived. Of the 10 treated 10nm EA chips 8 survived. Of the 10 treated…

Here is an aggregate of the recent posts/data on the Hemodialysis Project … Device Design/Demo Design idea for assembling multiple chips Gasket design for counter flow dialysis chip Peclet chip demo – > Dialysis Membrane modifications to prevent protein binding (HD PEG) Protein binding is reduced by both Adarza and Shestopolov treatments Damage of pnc-Si by…

Hi all, A while back (in the link below) I have posted the analytical solution that allows us to solve the flow rate distribution in our shear-free system. shear stress reduction via pnc-Si: analytical solution However we do not have a closed-form solution at that time. After a brief discussion we believe that there should…