The Michigan Engineer News Center

Philip Park receives Rackham Predoctoral Fellowship

CEE graduate student, Philip Park, was selected to receive a Rackham Predoctoral Fellowship for the year 2011-2012.| Short Read

The Rackham Predoctoral Fellowships support outstanding doctoral students who have achieved candidacy and are actively working on dissertation research and writing. Philip’s research aims to develop a high performance fiber reinforced asphalt concrete (HPFRAC) for pavement application. The innovative use of randomly oriented discrete steel fibers is expected to improve mechanical performance and electrical conductivity of asphalt concrete. Improved mechanical performance can extend the service life of pavements while electrical conductivity has potential for various multifunctional applications such as self-healing, self monitoring, and snow and ice removal on the pavement surface. Professors Sherif El-Tawil and Professor Antoine E. Naaman are the academic advisors of Philip.

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