The Michigan Engineer News Center

Parag Deotare receives AFOSR Award for research in Nanoscale Exciton-Mechanical Systems (NEXMS)

Prof. Deotare's work will deepen our understanding of the underlying physics of exciton-mechanics interactions and help engineer novel devices for energy harvesting and up-conversion.| Short Read
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Prof. Parag Deotare received a Young Investigator Award from the Air Force Office of Scientific Research (AFOSR) to support basic scientific research in Nanoscale Exciton-Mechanical Systems (NEXMS). In this project, Prof. Deotare will investigate the interactions between exciton and mechanics, which will lead to a better understanding of exciton dynamics.

An exciton is an excited state of matter that is capable of transporting energy. Matter-mechanics interactions is an untrespassed area of research, yet holds the promise of significantly improving the performance of energy conversion excitonic devices, such as organic photovoltaics and light emitting diodes (LEDs).

This work will deepen our understanding of the underlying physics of exciton-mechanics interactions and help engineer novel devices for energy harvesting and up-conversion. The work will also help to layout a platform for next generation optoexcitonic circuits with applications in data communications as well as biochemical sensing.

Additional information

AFOSR Press Release (10/11/16)

The AFOSR Young Investigator Program was initiated in 2006. It is open to scientists and engineers who have received their PhD or equivalent within the past five years, and show exceptional ability and promise for conducting basic research. The objective of the program is to foster creative basic research in science and engineering, enhance early career development of outstanding young investigators, and increase opportunities for the young investigators to recognize the Air Force mission and the related challenges in science and engineering.

This year, 58 scientists and engineers from 41 research institutions will receive $20.8M in grants.

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Researchers
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