First Flow Chip Pictures
We’ve been moving to a new format for chips, trying to standardize an active area that has good yield and allows fluidic access through the chip itself. The SEPCON outer dimensions have been reused (5.4 mm x 5.4 mm). It’s a 1.5 mm^2 single slot chip area (2 mm x 0.7 mm) with vias that are 0.2 mm squares. Below, I’ve stained the bottom channel Green and the top channel Red, filling up the channels by hand with a 18 gauge blunt needle. The channel heights were cut with the Silhouette (300 microns tall), and are rougher than what we would ideally like, but demonstrate good ozone bonding (10 minutes in the UR UV-Ozone system). To make the roof, I cut a 1 mm gasket with circular vias, again ozone bonding to the top channel. The floor of the devices is a glass coverslip.
We should be able to use these chips for a number of different functions (integrated EO pumps, flow sensors, cell culture).
There’s no way that the quarter image is really to scale. Otherwise, cool stuff!