These are low burst results but samples have lots of pinholes on them many of which are on the edges.
I also checked porosity of the wafers 338 and 340. They indeed have porosities close to 7%.
Wafer 340 (0,5) 0.0656 porosity
I few weeks ago I posted some flow rate data based on the 100K microcons in which three of the four membranes worked fine and the other appeared to be a “dud”. I pulled the four systems apart and used the digital calipers to measure the membrane thicknesses and found the following. – The three…
Following up on our previous work with SiN-NP with varied RIE times, Sarah and I measured permeability and permeance using a new measuring system better suited to the higher permeance and permeability we expect with the larger pores and higher porosity. Using the pressure regulator pictured above, we can set pressures of 3 psi and above…
I made a small presentaion for tomorow. Promise to upload it on the web tomorrow (can’t make ftp work right now). polymer2
In Josh’s forthcoming paper about clogging in forward and reverse configurations using 20 nm and 100 nm sepcons, we thought there was reason to discuss how the data agrees with the already existing models of membrane fouling. In this post, Josh discusses some of his efforts to model the data without accounting for the fact…
I have wondered if it were possible to create free-standing, nanoporous nanomembranes out of other materials (rather than my MgF2 process). The process is general enough that it should work. The major factors are Etch Selectivity between the substrate and the deposited material Film Mechanics (some films tear themselves apart due to the relative sizes…
1-5-2018 Final tRNA Presentation – By Jon Flax (Beckham Group) Modulated Expression of Specific tRNAs Drives Gene Expression and Cancer Progression
