Giant and Controllable Photoplasticity and Photoelasticity in Compound Semiconductors
In this project, I helped Prof Rafael Jaramillo’s group design a custom LED light fixture with a hand-machined adapter to match the dovetail brackets in a Hysitron Nanoindenter with five LED wavelengths (including UV) which was used to demonstrate photoplasticity in compound semiconductors. I used SolidWorks to optimize the optical angle of each LED in order to guarantee that they all hit the same location underneath the nanoindenter probe.
My contribution to this project includes extensive design effort to create the devices shown in these renderings and photographs, including a 5-channel computer controlled power supply, as well as to help determine if the effects are thermally driven or photoelastically driven.
“Giant and Controllable Photoplasticity and Photoelasticity in Compound Semiconductors” Dong, Jiahao and Li, Yifei and Zhou, Yuying and Schwartzman, Alan and Xu, Haowei and Azhar, Bilal and Bennett, Joseph and Li, Ju and Jaramillo, R., Phys. Rev. Lett. 129, 065501, https://doi.org/10.1103/PhysRevLett.129.065501