W620: Mechanical Testing

Hello Everyone, Here is an update of our meeting in Strong Hospital: So They are working in an urology lab, We met Sam who is a technician in Dr. Carla Beckham’s lab, he is responsible for cell culture part of the project. The cell line that they are working with is T24 with 80 -95% confluency….

Hi Guys, I thought this might be interesting, especially with the interest in SiN filters. While playing around with the SiN membranes for my project over in ChemE, I fought that the 1 micron SiN is surprisingly strong and that I can place our silicone gaskets onto the membrane and remove it without damage. By placing the…

Hi all, Presented here is a prototype of an “all purpose” SiN chip system for use in cell studies. The reason it was called “all purpose” because it is intended for simple cell culture and migration/chemotaxis studies. This prototype is essentially a less complicated and cheaper version of the device that was showcased in our…

Sarah recently attempted to build a prototype voltage-gated drug release mechanism using one of my standard nanofluidic transistors. When she turned on her circuit (pictured below), instead of getting voltage-dependent diffusion behavior, she instead saw electro-osmosis. We’ve been debating what this means, but I contend that this means the insulating alumina film coating the silver…

Previous posts: Theory Deposition Etching Imaging I have tinkered with the etch recipe some more, adding Argon to help prevent polymer formation (adding 5% O2 was not enough). The current recipe is 200 mTorr (100 mTorr Ar, 5 mTorr O2, 95 mTorr CHF3) at 120-125 W (6-12 W reflected). The plasma color is initially rosy (Argon), settling into a…

I think the consistently low flow rates are a real bottleneck for all our fluid based experiments and must be overcome. On the production side, we are really pushing the limits of our capabilities to produce the current membrane geometry, which I consider to be crazy big at 0.1 x 2 mm!! Considering the 15…