Slides for Jan 12th STTR Update

This is part three of a series of posts on constructing a mathematical model of the movement of gold through a porous membrane. In part one, I implemented William Deen’s mathematical model of the electrostatic and steric effects that contribute to whether a gold nanoparticle will translocate through a pore. The mathematica and matlab code…

I’ve been attempting to simulate protein sieving using the COMSOL model.  This first figure shows the comparison of the simulated separations to the actual results as determined by gel densitometry. The simulated separations tend to lag behind the experimental data for smaller proteins.  This is surprising since the simulation is faster than experimental results for…

Our two O2 regulators arrived this week (it figures we would have two to arrive within a day of each other after waiting for weeks to have one). Tom and Lingyun got to work right away. The image below shows that the UV/Ozone system does reduce the contact angle dramatically when used with oxygen (recall…

I did two tests using water straight out of the Barnstead and with water from the cleanroom in Hopeman.  I was able to maintain high permeability using the same membrane for at least three successive trials with both.  It looks like the culprit is the Nalgene container used to store the water.  For any sensitive…

The question arose last week about the affects of transport with use of the shaker in the Tecan, which led to a discussion about the current construction of the sepcon. The sepcon layout currently is as follows: The o-ring is 1 mm in diameter. Is this difference between the membrane and the receiver fluid dead…