The following is a plot of rhodamine diffusion for the experimental system at various time point: In this figure, the rhodamine approaches equilibrium, as defined as a filtrate/retentate value of 1.  The 9x well chips have a larger active area…

Hi all, this is Henry. Leeanna Hyacinth, an undergraduate student from the McNair program, has recently completed a joint project between the Waugh, Palis, and McGrath Lab to create a bioreactor to amplify the number of mature red blood cells.…

I am having some problems with my electroosmosis device and I was hoping that people with more knowledge about the TEM chips might have some suggestions.  For these trials, I used membranes from a wafer labeled 412-S.  I am still…

Due to the discrepancies between the 1D model and experimental runs with rhodamine, I have switched over to using COMSOL to solve for a 3D model.  In this system, 200×200 um membrane squares with a 45 degree etch separate the two…

In the last month, we’ve run several sets of 15 nm pnc-Si wafers over a range of RTP temperatures.  Below is a chart that illustrates the current pore size control we have by tuning annealing temp. The 900 C, 950…

Building on my recent posts I ran an experiment with SC267 testing the ability of BSA and DDM to diffuse through UV-Ozone treated (20min at 150C) and untreated samples. I used four samples testing both BSA and DDM in the…

In order to further test the model, I’ve set up additional rhodamine diffusion assays.  In each case, the setup is similar to the nanoparticle/protein/dna separations –  20 uL of .5 mM rhodamine on the top of a SepCon and 20…

In my last post I presented the results of an experiment in which it appeared that BSA did not diffuse through a SC267 sample treated in the UV-Ozone system for 20min at 150C. As a control I also ran BSA…

Frustration with the lack of agreement with experimental device has led me to check if the diffusion in the wells within the model is physically relavent.  To do so I’ve solved a partial differential equation pertaining to a concentration of…

As mentioned in my previous few posts Justin and I have been working to characterize contact angles resultant from various exposures in the UV-Ozone system. Earlier this week we got our new oxygen tank installed and it appears that after…