Mingda Li
Department of Nuclear Science & Engineering, Massachusetts Institute of Technology
LOW 3051, Rensselaer Polytechnic Institute
Wed, October 24, 2018 at 11:01 AM
A dislocation, just like a phonon, is a type of atomic lattice displacement but
subject to an extra topological constraint. However, unlike the phonon which has
been quantized for decades, the dislocation has long remained classical. This
presentation is a pedagogical introduction on our recent theoretical effort of
quantized dislocation, aka the "dislon" theory, with a focus on new
phenomena and predictive power. By establishing a central equation
"dislocation=quantum field", the influence of dislocations to materials
functionalities - such as electrical, optical, magnetic and thermal
properties - can be computed at a new level of clarity.
Mingda is an Assistant Professor of Nuclear Science and Engineering Department at MIT since 2018. He completed his B.S. in Engineering Physics from Tsinghua University in 2009, and his Ph.D. in Nuclear Science and Engineering from MIT in 2015. His research interest lies in quantum defect engineering, to use defects to tailor materials functionalities and quantum ordering, and to develop novel algorithms and spectroscopy to resolve defect information.