Large-area Ultra-thin Membranes Using XeF2 Senior Design
Power Point for my Senior Design
https://docs.google.com/file/d/0B1AH05-mf_tQLTdSMHRWX0NjNGc/edit?usp=sharing
Similar Posts
Production from 2.28.08
Production this week yielded mixed results. We ran eight wafers through four different RTP temperatures with/without the susceptor. We wanted to test our theory that temperature non-uniformity inside the chamber was causing the morphology change across the wafer. This proved to not be the case! Wafers that were treated with and without susceptor showed the…
Surface-Charge-Dependent EO Pumping Behavior Persists (weakly) at Low Applied Voltages
In a previous post (link) I presented a video that showed that the voltage applied to a silver film changed the pumping behavior of a membrane. The key data is summarized by the following powerpoint slide: My most recent post (link – electrical characteristics…) showed, however, that the breakdown voltage of these silver and alumina NFTs is…
Review: Ultrathin Silica Membranes with Highly Ordered and Perpendicular Nanochannels for Precise and Fast Molecular Separation
ByJimXingyu et al; Supplement The authors of this submission to ACS Nano apply techniques for the creation of mesoporous silica thin films with vertically aligned nanochannels to create ultrathin (< 100 nm) silica membranes with ~ 2 nm nanochannels. The technique involves the growth of silica around surfactant templates followed by the removal of the…
Impact of membrane thickness on EO
ByJimOne of the surprising results of Jiracai’s studies with thick and thin membranes was that the thicker membranes had a lower capacity to support back pressure than the thinner membranes he used (see table in this post). This is counter to our original expectation; Since we know that much thicker EO membranes can support 50…
Total filtrate volume vs concentration
The following plot is an attempt to summarize recent work measuring rate of flow through a membrane as a function of concentration. We investigated 100 nm NPs, (totally blocked), 20 nm NPs (partially blocked) and IgG (mostly passed). In all cases, the buffer used was 1xPBS and 0.1% Tween 20. This plot mostly shows the total…
iBidi Microfluidic Integration Progress
As part of my work over at the University of Nottingham, I’ve been using iBidi devices to grow cells. Eventually, I will use their product to do Raman studies of cells grown on my MgF2 substrates. I’ve been making some progress towards that end using PDMS (I’ve been using 10:1 base to curing agent for…