(Meghan Kazanski actually did all the work, but she didn’t have a login when this post was started.) The calculated porosity is 16.4 % with an average pore diameter of 417 nm. SepCon assembly was performed with chips from…

The following data is from analysis of Wafer #1059, consisting of 30nm pnc-Si with 7% porosity and an average pore diameter of 28nm. Square window sizes with sides lengths of 0.1mm, 0.3mm, 0.5mm, 0.7mm, and 0.9mm were tested. For 1.1mm…

Over winter break I put together some posters to hang up in the lab. I tried to represent in an clever way a few key areas of research that NRG is interested in:   If anyone has any ideas for…

The overall aim of the small animal dialysis is to evaluate the dialysis membranes and compare their urea clearance to commercial materials. The specific aim of this study was to go through the process of ordering and receiving rats, setting…

  Background: In a prior post I showed that we had seeded cells on both nano- and micro-porous SiN Liftoff Membranes. The nanoporous proved to be rather weak and showed numerous broken windows after seeding the cells.   Summary/Conclusions: In this follow up post,…

In all of the below graphs, the x-axis has the same scale for easy comparison (-10 nm to 80 nm diameter). The Y-axis varies from plot to plot, but since we care more about pore density than actual numbers of…

The basic principle of inducing the osmotic pressure to suppress back pressure is based on the counterbalance of the opposing flows of solvent.  Consider an electrolytic cell composed of a pair of Ag/AgCl electrodes and a Nafion-coated pnc-Si membrane separating…

Aminosilane has been used widely to derivatize the surface of silica for the applications in analytical chemistry, biochemistry, and biomedicine. It also plays an important role in providing adhesion for Nafion coating on silica surface. The basic principle is described…

Previous posts: Theory Deposition Etching Imaging I have tinkered with the etch recipe some more, adding Argon to help prevent polymer formation (adding 5% O2 was not enough). The current recipe is 200 mTorr (100 mTorr Ar, 5 mTorr O2, 95 mTorr CHF3) at…

In the field of gas permeance there is a plot called the “Robeson Plot” (the paper that debuted it) that is used to compare the separation behavior of various membranes made of different materials and measured in different systems. An…