I recently tested the burst pressures of samples from W510, 511, and 513. None of the membranes are pinhole free. Silicon thickness varies (15 nm, 10 nm, 20 nm). See Dave’s post for complete fabrication information. W513 has noticeably higher…

In the previous adsorption trials I compared SepCons to MicroCons and NanoSeps. The SepCons appeared to have higher adsorption, which we thought may have been a result of the plastic used in the SepCon. I then removed membranes from MicroCons…

This is the protocol I use to measure band intensities. At the end of the explanation I will post and review my recent results concerning silver stain densitometry. First load a digitized gel into ImageJ Select Image>Type>8 bit to make…

I recently attempted a fibroblast (L1 3T3 cell line) growth test. The cells were seeded at too high of a density, so growth curves can’t be produced. However I checked cell viability and pnc-Si discoloration. As expected RTP treated samples…

The following changes were made in this adsorption study: The MicroCons/NanoSeps were not spun. We will just characterize the differences between the materials. The pnc-Si membranes were assembled into SepCons because of the potential adsorption to the plastic surfaces. Mass…

Last week I etched three wafers of different silicon thicknesses (10 nm, 15 nm, 20 nm). All the wafers had a TEOS mask with the standard three layer sputtered film on the front. Not that surprising is the fact that…

Previously I have shown that sample buffer can be used to lift adsorbed proteins off polymer membranes, which can then be imaged on a gel. I have used a similar procedure to assay adsorption on pnc-Si membranes. I used 4…