ICNMM Slides

Cellulose Membranes I set up a 24 hour diffusion experiment with Millipore 30kD cellulose membranes as shown in this picture: After 24 hours I collected retentate and filtrate and visualized on the following gel: I didn’t expect to see a separation so similar to our pnc-Si results in this format considering the extremely poor dialysis…

Anant and I found a protocol in Biomaterials a few weeks ago that allows colorimetric determination of silicic acid.  It was used to track the degradation of PSi samples in Tris-HCl buffer. I optimized this protocol and got standard linear curves, as reported in the protocols section of the blog here.  Here, I report the…

Sarah and I did some more gold separations with 10, 20, 40, 50, 60, 80 and 100 nm Au particles.  We used the “clean” water purchased from the medical center.  Same as last time, we diluted the “as-bought” gold 3 parts to 1 and loaded each cell with 300 uL before pressurizing at 5 psi…

So I think I have confirmed that PDMS is at least one of if not the major contributor to the contact angle problems in the UV-ozone system. Control image before any treatment: I then dried the chip and placed it in the UV-ozone system with two slides that each had two strips of PDMS. Since…

Introduction We are aiming to make device assembly easy and quick, particularly for distribution to non-engineering laboratories. We are collaborating with ALine to develop assembly via pressure-sensitive adhesion techniques. Assembly Process Modular Device Assembly Animation2 We made ten devices with porous membranes and ten with non-porous membranes to show no leakage. Current Issues and Potential…