Similar Posts
Control Experiments for NPN Translocation Project
Just a quick update this time – since my last post I have been doing control experiments to demonstrate the effect of the filters. For the controls I have been using the chips without the nitride cap, since I am running low on the nitride ones (current I have 23 left, 7 with filters already…
Does pnc-Si follow EO theory?
Back a year or more ago, we had analyzed the EO flow rates from pnc-Si and determined that the flow was much higher than any other material. We then went on to try to calculate the zeta potential using the Helmholtz-Smoluchowski equation: We figured out the velocity of the fluid, v, from our flow rate…
Partially Etched 100nm NPN (Wafer 2238) Crossections + Porosity
As the title states, I partially etched some different material (Wafer 2238, 100 nm NPN) to create nanofeatures with blown out holes. With a thicker membrane, we can blow out the pores more (etch longer) without compromising the strength of the material (with regard to templating purposes). These membranes were fractured and coated with 6…
Microfluidic control over millimeter scale alignment of collagen fibers
Type I collagen is a fibrous protein and the largest constituent of the ECM by mass. Collagen fibers are aligned across several millimeters to centimeters within load-bearing tissues, like the musculoskeletal tissue, cardiac tissue, and the cornea. Millimeter scale regions of fiber alignment are also observed in the tumor stroma and fibrotictissue. At the cell scale,…
Predicting the failure of silicon nanomembranes in burst pressure studies
ByJimAfter years of on again/ off again work – dating all the way back to the earliest days of the NRG – we have finally submitted a manuscript on membrane mechanics. The story of this manuscript is a remarkable one: it was willed into existence by a UR Mechanical Engineering PhD student who developed a…
DLS vs. Crystal protein sizes
UPDATE: A look at long and short crystal dimensions (9/1/10): DLS vs. Crystal Sizes – Newest version 8/30/10 Here is a comparison of sieving curves using DLS or estimated crystal dimensions of proteins. DLS: 24 hours sieving curve. 48 hours sieving curve. Estimated longest crystal dimension: 24 hours sieving curve. 48 hours sieving curve.