The Michigan Engineer News Center

CEE Students participate in World Water Monitoring Day

Environmental and Water Resource Engineering students partnered with grade school students for World Water Monitoring Day (WWMD).| Short Read

Graduate students Adam Smith, Roya Gitiafroz, Dongjuan “Joan” Dai, and Professor Lut Raskin helped 50 third and fourth grade students from Angell Elementary School in Ann Arbor to participate in WWMD in June 2009. One of the student groups submitted a short report, which is featured on the WWMD website (http://www.worldwatermonitoringday.org/). While they were provided with background material before and after the sampling and analyses, the report was written by the students without our input!

The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read