Quantitatively investigates optical properties of colloidal lead sulfide (PbS) quantum dots. Utilizes absorbance equations (Beer's Law, aka Beer-Lambert) and mentions helpful formulas for my own work (how bandgap theoretically relates to quantum dot size).
With all the packing behind me and the unpacking half done, I hope to type up the proposal tomorrow. I've been mulling this over for a few days, and I think the most pressing questions I have all are in regards to what equipment I'll have acess to.
Ideally, I could go out during tomorrow's period and scout out the places where I'll be taking samples. I'll also send an email reminder to Mike asking him about maps of the watershed/stream.
Take a look at the attached file: this is an example of a DNA sequence trace file.
In this pdf, we see part of a DNA sequence of a mutant plasmid (about 1180 nucleotides). The purpose of this trace file is to check if the insert (mutation) was transferred into the plasmid or not.
To verify this, we just need to know that there is a nice, tall peak at the spot where the mutation is supposed to be. Then, based on the color of the peak, we can also see if the correct nucleotide (A, T, C, or G) was replaced.
(black=G, red=T, blue=C, green=A)
Ruland, Andres, Schulz-Drost, Christian, Sgobba, Vito, and Guldi, Dirk M. (2011). "Enhancing Photocurrent Efficiencies by Resonance Energy Transfer in CdTe Quantum Dot Multilayers: Towards Rainbow Solar Cells" in Advanced Materials.
Motivation of the paper:
- want a "low-cost, easily producible, and efficient" solar cell
- because current designs are not yet commercially viable, these researchers are trying to find a solution
- they decided to jump on the quantum dot (nanocrystal) bandwagon
Over the weekend, I read over the long packet I got from Marion. Most of it was specific sampling procedures for different types of things that might be in streams. Chemical components, biotic factors, and physical factors will be the three things I'll be focusing on.
The basic chemical measurements that I want to take in the field are the following:
dissolved O2 --> biochemical O2 demand?
Tomorrow, I need to figure out what we have in terms of equipment for measuring these.