I tested ozone treatment influence on the membrane strength and air permeability. The result: didn’t see any difference between ozone treated and non-treated samples.
Burst pressure experiments description: tried wafers 391, 393, 344, and 345. Ozone treatment for 5 and 15 min didn’t show any difference.
Air permeability: tested samples from wafers 344, 345 with different porosities before treatment and after.
Thanks to Kilean for the TEMs. One of the properties that influences strong SERS behavior is surface roughness; rougher metals produce a better SERS effect. People have electrochemically roughened surfaces before to make better SERS sensors. The following quote is from a review paper (SERS Materials Review Paper, 5 years old now) After decades of debate,…
I’ve made some modifications to my V2 design such that it allows total vertical access, among other things: This design utilizes embedded electrodes and filter within gasket layers to create a tight fluidic seal for each channel. Here, the slot is pointed upward, so the endothelials will be on the bottom side and the…
Hi all, a quick update in case you want to know what we are up too. This summer it will be just me at the McGrath lab; the main goal is to produce some preliminary data with an eye on submitting an NSF grant in the fall. The topic is nano-biosensing, using Henry’s shear-free…
I repeated the first degradation experiment (posted here) to confirm the results. I also tracked discoloration of the samples this time. As before, I used 1X PBS, but this time, the entire assay was performed in the 37C oven. Discoloration pictures: The PSi sample starts with a new rainbow coloration and then completely discolors to…
This post describes my second attempt at developing a protocol for viral genome extraction in large volumes of waste water. Like our first attempt, described here, we looked to improve upon the protocol Direct wastewater RNA extraction via the “Milk of Silica (MoS)” method – A companion method to “Sewage, Salt, Silica and SARS-CoV-2 (4S)”….
Background For the in vitro portion of our dialysis project here at UR, we have settled on using two major experiments to test our devices for eventual transition to an in vivo model. These experiments include a single pass system using multiple syringe pumps to observe the effects of fouling on our membrane as well…
