W620: Mechanical Testing

As the title states, these are images from the monolithically fabricated devices used by Kyle and Vincent in Ottawa. These devices were fractured with tweezers, then tilted and metallized with 5 nm of Pt, mounted on carbon tape.      

Overview: The study of ADSC spreading on various surfaces was conducted to determine if porous surfaces and the porosity of the surfaces had any effect on cell spreading. Eight different surfaces were studied and each of the membranes were SiO2, these included: 0.5um low porosity (LP), 0.5um high porosity (HP), 3um LP, 3um HP, 5um…

My previous discoloration post showed that chips in the Sepcon format discolored much slower than flat chips.  A flat chip in the same well as a Sepcon chip seemed to accelerate discoloration.  One thing about the Sepcon format that I hadn’t thought of earlier was that pnc-Si in Sepcons is autoclaved for sterility.  So I…

This is a 12% SDS-PAGE gel of the human albumin (alb) and cytochrome c (cyt c) EQ tests. Both alb and cyt c passed through the membrane, while the cyt c impurity (middle band) and alb impurities (high bands) did not. The next step? I’d like to try an albumin/IgG separation with membranes of similar…

Jirachi has been working to make thin nafion films using our membranes as a support structure. Nafion is polymer that contains a sulfonate group, and as a result acts as a proton wire, allowing for cations (+) to be transported across a membrane, but not anions or electrons. Such a membrane can be used for filtering a…