These are cross sections of my comsol diffusion model. Each chip has 6 square wells terminated in a membrane. This cross section cuts across the two middle wells. Concentration contours are in 0.025 intervals.
6 hours:
12 hours:
18 hours:
24 hours:
W502 and 504 were tested for burst pressure and air permeability. Only one sample from W502 was tested for burst pressure (the other broke while setting up and I wanted to conserve samples) with a burst pressure of 4.46 psi. The burst pressures for W504 ranged from 2.06 to 6.57 (n=3). Air permeability is shown…
Some time before I noticed that placing the membrane in the metal deposition chamber at slight angle to the incoming metal atoms stream makes thin metal layer only on one side of the pore, shadowing the rest of it. Rotating the membrane sample after the metal layer was deposited on the front and making sure…
Dear McGrath Lab members, I would like to notify you that BME245 (Biomaterials Lab) students will be coming at following times (see below) to use the plate reader. They will be accompanied with experienced TAs at all times. Wednesday- 3/26- 3:25 pm-9pm Thursday- 3/27- 9:30 am-12:25 pm and 3:25 pm- 6:05 pm. My apologies for…
In recent posts we have tested the total volume of filtrate as a function of time in the centrifuge. We used NPN with different average pore sizes and we studied 100 nm and 20 nm NPs as well as IgG. We showed that while 100 nm NPs were completely blocked 20 nm NPs and the…
A group published a paper in Lab on a Chip (2012) using track-etched membranes for electro-osmosis. There are a lot of eerily familiar terms and concepts in the paper. The title even sounds familiar: Low-voltage electroosmotic pumps fabricated from track-etched polymer membranes They created a device with metal mesh electrodes on the opposite sides of…
Introduction Etaluma is a company that builds high resolution microscopes in a compact format for integration into cell culture incubators. This shifts from the traditional stage top or incubator cage approach to live cell imaging to allow for steady time-lapse imaging over extended periods of time without issues of focus or worries of temperature or…