Porous TEM windows fabrication using CsCl self-assembly
The competition keeps coming at us …
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Air Permeability (w 318, 319, 320, 307) and Updated Burst Pressures
There is some non-uniformity in air permeability based on the position but it is not very clear for wafers 318 and 319. The full wafer measurement in future will make this dependence more obvious.Permeability of w319 is much higher then of w318 (RTP 1000C and 900C) as expected from TEM images where w319 has higher…
PDMS-Membrane Bonding Update
ByMike HThis is just an update on the progress being made towards creating a closed flow cell by bonding PDMS to our membrane chips. For those who were not at the meeting on Tuesday we have successfully bonded PDMS to both glass cover slips as well as out membrane chips using the UV Ozone cleaner. Yesterday…
Porous nanocrystalline germanium (pnc-Ge) membranes
ByJoe QiHello everyone! I’d like to show you some recent result about pnc-Ge membrane. We have been thinking to replace Si with Ge for a long time to see whether we can transfer pore formation to another materials other than silicon. In this post, I’m gonna show you some exciting pnc-Ge membrane images! The fabrication process…
BBB V2.8 @ Vaccinex Adhesion Molecule Testing
I created some quick open air devices to test the viability of different adhesion molecules. The basal well has a volume around 150 uL, and the apical well has a volume around 15 uL. I made 6 devices in this format. On 5/14/13, Alan and I filled the basal chamber with PBS and then…
HUVEC Adhesion with controls (repeat)
HUVEC adhesion was tested on different substrates. This time solid chips w/o membrane slits were used and expected results were obtained. I think from all the adhesion studies done, it could be concluded that initial adhesion on pncSi is as good as any other favorable substrate. Hence, the initial low density on pncSi was due…
Electrodes: electrical measurements and EO tryouts
In continuation of work on ultrathin metal electrodes on pnc-Si, I tried changing metal thicknesses at different positions inside the chamber. In this experiment, on the front side of the 30 nm thick membrane the 22 nm metal layer was deposited from three different positions in the same run. The back sides of all the…