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Ian Krout Rotation: Microplastic Filtration and Raman Analysis
Word Document: Blog Write Up 4.8.19 Over the past two weeks I have been working on creating a protocol to eliminate the organic debris from environmental water samples, leaving only microplastics behind on the silicon filters. The goal for this is to be able to really isolate out just the plastic in environmental samples making…
Stabilizing Gold in Salts using Protein Adsorption
As mentioned previously, gold colloids are not stable in high salts because salts reduce the repulsive forces between particles and cause aggregation. I have been able to dissolve naked gold colloids in 10mM KCl without aggregation, but the particles crash out at 100mM KCl. There are a couple of strategies that can be used to…
AFM-newer material and high "magnification"
Earlier this week, Maryna and I did some AFM of her samples. She vapor-deposited parylene on the well-side of pnc-Si and was interested in whether/how well that polymer got through the pores. We got some really interesting-looking scans, but I’ll let her post those images. As controls, we looked at clean chips from the same…
Record of light transmitting through the waveguide across the porous membrane
ByJingkaiFrom the last post, I had successfully manufactured waveguide on top of our porous silicon nanomembrane chip. However, the proof that light can transmit through the waveguide was not accomplished until last week. The problems I was experiencing included insufficient thickness and wrong cladding layer refractive index. Thus, in order to prove that my waveguide…
COMSOL Model Files Download Page
This post is not an update on my research. I am creating this page to house download links to the COMSOL Multiphysics models I’ve constructed in the course of my work here in the McGrath Lab. This page is linked to in my thesis for legacy purposes. Important: these files have been uploaded with the…
Nanopore Battery Review
Nanobattery Paper Nanobattery Supplement I have long desired to make energy storage devices with our nanomembranes (supercapacitor post), mainly because they would be really great separators, having both excellent charge conduction and physical barrier resistance due to the porosity and material properties of silicon. Other groups have begun to take advantage of the increased…