Maryna told me the UV/ozone cleaner did not work (the blue light in front of the chamber did not light up) when she was working with Dave today. I quickly checked the machine and it is actually working properly.
The trick is to make sure you trigger the “safety lock” behind the chamber before you switch on the lamp. The “safety lock” should be in contact with the inner wall of the hole, as indicated in the schematic below.
Previous Post We discussed in meeting having Maryna also calculating the permeabilities for this figure. Here is a figure with the experimental, theoretical permeabilities from Dave’s, Maryna’s, and my processing, and an average of the three theoretical permeabilities. I then took this average and made the following figure. I did omit w312, as the super…
I few weeks ago, I had a couple wafers made with different size squares and slits. I posted my first results here and here. In that experiment, I showed pretty dramatic 2D structures over both supported and free-standing membranes with rectangle shapes. Also, I showed vacuole formation at (almost) the single cell level on square…
We’ve made a few academic inquiries so far into the theory which governs our nanoporous membrane transfer, but engineers as we are, the pace of our practical knowledge has outstripped that of our theoretical understanding. Here, I want to share a summary of what we know about these transferred membranes from a practical perspective, oriented…
Dave gave me some carbonized samples several weeks ago to test stability/discoloration. I measured the contact angles right after I got the samples (posted here) and then started the discoloration. These are SC141 chips. Controls were untreated (1st column) and RTP’ed only (2nd column) chips. Two carbonization conditions were tested – 5 minutes of 1…
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From my last two posts (Anodic Bonding, Ozone Bonding), it is clear that we have some sort of bonding going on between the freestanding membrane and the posts intended to support the membrane. However, we do not understand the nature of the transfer. To gain more insight into this process, I took more SEMs of…