Pinhole Study: W510

As an introduction, my name is Alec Salminen. I received my BS in Biomedical Engineering at the University of Arkansas and am currently in my first year of the BME PhD program at the University of Rochester. As my rotation in the McGrath lab gets underway, I would like to share with the group my…

Here is a slightly enhanced version of Mike’s latest hydraulic permeability data for commercial devices with PES membranes. The data at 22 and/or 34 PSI are a bit strange. Still the long-term trend seems downward. Similar data for PNC-Si membranes should show no pressure dependence. We need to get a version of this figure that…

Because the Barcikowski lab intends to use the nanoparticles they sent us, relatively high yields are necessary for any step that cleans them up. This is unfortunate, because in every single separation that we’ve done (with one exception mentioned further on) we never see yields higher than about 5%. We’d thought that the problem was…

I would like to share a collection of high resolution SEM images of nanopores of polycarbonate track-etch (PCTE) membrane.  These nanopores have very high pore length-to-diameter aspect ratio of 6000 nm / 25 nm.  I hope you find them useful. Cross-section of PCTE membrane Cross-sectional view of long and straight nanopores with a close-up at…

Here is a PDF of the presentation I plan to give at BMES this year. The presentation is first an overview of our SiO2 membranes for cell barrier and co-culture models and then a brief summary of our cell-substrate and cell-cell interactions on porous and soft substrates. I am currently working on getting it under…

The CHA e-beam evaporator in RIT had been used traditionally for the deposition of metal on the pnc-Si membranes. The most important factor for metal deposition on the membranes is that the nanoholes must not be blocked. So the metal deposited needs to be smooth and continuous.  Ag or Au does not adhere onto Si…