Over the last few months, I have been trying to reestablish my SERS measurements, and generate a paper based on SERS sensing with our nanomembranes. Previously, I have created magnesium fluoride coated substrates that seem to have better SERS performance…

Thanks to Dan Ahmad for performing the filtrations. Introduction I want to see if we can improve the sample preparation method for the recovery of SARS-COV-2 from wastewater filtration using our nanomembrane technology. Currently, raw samples are ultracentrifuged against a…

This post is a continuation of the project found here:  Fabricating 500 nm Channels in Silicon Wafers. The chief limitation of the previous device design was that the long narrow nanochannels were not effectively wetted. To combat this problem, we…

Summary There’s a lot to be desired in counting pores in grayscale images, especially when the contrast differences are low. A human eye is usually much better at picking out slight differences in contrast, and this can mean the difference…

Summary This post complements Fabricating 0.5 um Channels in Microscope Slides for Staph Invasion Assays. Challenges in the etch transfer process necessitated switching to a different substrate that had stronger selectivity. With that in mind, we set out to create 500×500…

Summary: The fabrication of NPN relies on the formation of pnc-Si over a non-porous SiN film, then etching the pattern of the pnc-Si into the SiN. I used the same concept to replicate the dual-scale nanomembrane style (microporous+nanoporous) featured in…

Summary: Dan and I went to Woods Hole Oceanographic Institute to learn about the current state of microplastics research. There were a number of things that we learned that we did not know. The common sentiment among researchers agreed climate…

Thanks to Ian Krout for the data. As covered in our last post, we hope to distinguish between different kinds of microdebris caught on silicon nanomembranes through the material’s different melting points. Plastics can have a wide range of melting…

Document: Ian’s Presentation Thanks to Ian Krout for the experiment and the writeup, which I have organized here. The purpose of this set-up was to develop a tool to melt plastic particles collected on the silicon nanomembranes membranes. Due to…