Air Permeability Update

New Lift-off setup, thanks to suggestions and concerns about flatness of the membrane after lift-off.   Floating SU8 – SiN membrane with superstructure submerged. Membrane after removal from water Membrane, dry on first version of lift-off super structure. Membrane after separation. SiN has adhered to the superstructure and the SU8 peeled off the top. The…

This is an update of the research on the on-chip EO pump. Due to a mistake in determining the direction of particle flow, it now looks like the particles in this post were moving by electrophoresis rather than electroosmosis.  The particles were negatively charged (-40 mV zeta potential) because of a COOH group on the…

This week, we explored the possible differences a thermal oxide making layer had versus a TEOS on membrane morphology. Here’s what we found: The top image shows wafer 410 @ (1,0) and the bottom wafer 503 @ (1,0). Both wafers were annealed, cleaned, sputtered using the same conditions. The only difference was the masking material….

Michael and I have been working to create cell channels of varying widths and heights to test out a concept used in a paper we recently read as a group. This work claims to see cell cords in 12 hours, so no media renewal is necessary.   The channels were made by layering and bonding…

Now that I am working on labeling my 5637 EVs, I have finally gotten around to getting a good labeled sample and a good negative control. The samples were prepared as follows: 5637 EVs were thawed from a frozen stock and 1 μL was diluted into 1 mL of labeling fluid. The labeling fluid contained…

Kevin was kind enough to share his presentation with us from his visit this July:   Here is the link on Owncloud:   http://drive.bbe.23a.myftpupload.com/public.php?service=files&t=c3eceae62439a478b4d1b676924e45ee