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SiO2-deposited discoloration
Last week, Lingyun and I deposited 30nm SiO2 onto both sides of wafers 335, 341 and 345. Unfortunately, these wafers weren’t in too good shape, so there are only a few intact slits without pinholes. I then took a few chips from each wafer and did RTP (800C, 5 min, Ar). I’m doing discoloration studies…
AFM of SiO2 film roughness
Dave did a series of 20nm SiO2 film depositions at different temperatures (constant bias) and gave them to me to AFM. I guess he wanted to see if film roughness changed drastically over the range of ‘room temp – 400C’ in order to investigate this as a potential source of pinholes. I used a new…
Track-etched membrane permeability in transwell format
I finally got some MATLAB code working which calculates permeability coefficients (P, in cm/s) from a non-sink, generalized equation. This data is from (n=5) fluorescein (MW~370 Da) transport experiments in the Tecan (time vs. receiver well concentration (Cr) values). In this first set of data, I used polycarbonate and polyester transwells, at room temperature, without…
Adsorption tests on PEG1000 etc.
I was given three groups of chips to SEM. The first group had undergone the Diazerine and PEG1000 treatment followed by incubation with either PBS, IgG, or BSA. The second ‘group’ was a chip that had been treated with diazerine and PEG1000 but had not been incubated. The last group was a chip which had…
Articles for (Jun/06/2014)
ByHenryHi all, i have to present for a biomechanics journal club meet next Friday (Jun/06/2014) and figured that i might as well double-dip the presentation. Currently i am leaning forward to present this article: Takano (Futai) microfld nanofld 2012 [pocket-sized cell culture] which showcased a pocket-sized, stand-alone device for cell culture. No need for…
UV-Ozone treated SC267: DDM passes and BSA held back
ByMike HBuilding on my recent posts I ran an experiment with SC267 testing the ability of BSA and DDM to diffuse through UV-Ozone treated (20min at 150C) and untreated samples. I used four samples testing both BSA and DDM in the treated and untreated cases using Jess’ diffusion cell. Again 6uL was placed on the membranes…



