This entry includes fabrication details and includes additions in the PDMS Chip Inventory sheet. According to this conversation regarding chip holder design, the goal is to fabricate chips with 5.5-6 mm height.

This entry integrates protocol changes mentioned in Fabrication_GB_MS_20240826 and follows the inserted protocol (see above.)

Glass petri dishes/grass beaker were sprayed with 70% ethanol and cleaned with a paper towel before use.

Fabrication details are provided below:

Chip1 (#141) -test 1

Very good mixing in a grass beaker for 5 minutes with a coffee mixer without creating many bubbles

10 minutes of peace (no fog)

10 minutes in the vaccum chamber (no fog)

15 minutes of peace and checking every 5 minutes if fog has appeared (no fog)

Purring of pdms in the wafer at the side of it untill before I have to use the scraper

After starting using the scraper there is almost immediate apperrence of a lot of fog at the center of the wafer where the scraped pdms falls

Chip2 (#142) -test 2

Mixing lighly in a glass petri dish for 3 minutes without creating many bubbles

8 minutes of peace (no fog)

15 minutes of peace and checking every 5 minutes if fog has appeared (no fog)

Purring of pdms in the wafer at the center of it untill before I have to use the scraper (no fog)

After starting using the scraper there is gradually apperrence of fog at the center of the wafer where the scraped pdms falls

Chip3 (#143) -test 3

Mixing hardly in a glass petri dish for 5 minutes creating many bubbles till the pdms has a light white colour

15 minutes of peace and checking every 5 minutes if fog has appeared (no fog)

Purring of pdms in the wafer at the center of it untill before I have to use the scraper (no fog)

After starting using the scraper there is gradually apperrence of fog at the top part of the wafer where the scraped pdms falls. However I did not scraped hardly the last pdms and therefore there was very little fog at the end.

The mixing does not affect the appeacense of fog, however the fog appears when I use the scraper (silicone spatula) to collect the last pdms portion from the glass petri dishes/grass baker. Specifically, at test 1 where very extensive scraping was needed in order to collect the last drops of pdms because of the grass beaker, the fog appearece was very intense. On the other hand at test 3 where I did not scraped hardly the last pdms there was very little to no fog.

Lint was detected within all cured PDMS chips due to insufficient cleaning of the glassware.

Chip #141 came out in medium condition with the chip height being around 5.54 mm

Chip #142 came out in medium condition with the chip height being around 5.61 mm

Chip #143 came out in medium condition with the chip height being around 5.69 mm