Coulter Project Timeline

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This is preliminary data for air permeability in track-etched membranes for membranes with different pore radius.For comparison here is a table of the performance characteristics for TE membranes Measured data is of the same order as official TE membranes data.

Small DNA oligomers behave like stiff cylindrical rods.  They have both rotational and translational diffusion, and this is of interest when considering how such a rod will diffuse through a nanopore.  In this post I briefly consider the effects of rotational and translational diffusion of cylinders of different lengths. The rotational diffusion coefficient can be…

On the 13th of September we reviewed our recent progress on EO. Maryna and Jirachai (Borkholder group) gave presentations. I’ve uploaded PDF files of each of their presentations. Maryna’s presentation: MarynaEO Jarachai’s presentation: EO_Testing_Report (PPT) EO_Testing_Report (PDF) Bubble formation in electrolytic cells

If protein is adsorbing to a surface, it’s leaving the solution.  We can indirectly measure how much protein is leaving the solution, and that may tell us something about how much these surfaces are adsorobing. For my first attempt, I used the Bradford Reagent to measure the concentration of the solution after protein has remained…

While Chris and I were in Boston we deposited our membrane stack on a patterned wafer.  It was annealed at 1000 C and then etched.  Because we didn’t have an accurate deposition rate for Silicon, we overestimated and put down 30 nm (instead of 15 nm).  Still, we can see in the TEM that pores…