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Today I looked at a wafer (391) that had been annealed in the RTP on top of a 6″ wafer substrate. The idea is that the six inch substrate would create a “shadow” around the 4″ wafer which would improve thermal uniformity by blocking the multiple reflections from the lamps inside the chamber. Here is…

This will be a very brief post, but kind of an interesting one. I have been attempting to get my identification of exosomes by immunogold labeling and that hasn’t been going terribly well. I think that it is due to a wealth of complications including a lack of fixed exosomes, salt contamination and other problems….

Last week I mentioned that a two step anneal may help with the tears that are forming on the membranes when they are annealed post-etch.  The recipe I used was a 10 C/s ramp to 600 C, hold 60 s, 10 C/s ramp to the setpoint, hold 60 s, ramp down.  I annealed membranes with…

Last week, I calculated the Young’s modulus and residual stress of several different membranes using the pressure-displacement technique. The measurements were performed on at least three different geometries (square and rectangle) and the results were averaged. Wafer Thick. (nm) Por. (%) Anneal Res. Stress (MPa) Young’s modulus (GPa) 532 15 2.59 1000 sus 4.17 31.67…

The aim of this work was to electrospin aligned polymeric fibers on parylene stencils as means to characterize the critical necessary total area and necessary opening sizes to elicit endothelial cell response in the form of cell alignment among other characteristics typically found in human cells that are adjacent to highly aligned ECM. For this…

In order to further test the model, I’ve set up additional rhodamine diffusion assays.  In each case, the setup is similar to the nanoparticle/protein/dna separations –  20 uL of .5 mM rhodamine on the top of a SepCon and 20 uL .1 M KCl on the bottom.  Two different membrane geometries were used so far…