People

People

 

Principal Investigator

Youping Chen

Youping Chen

Professor

Dr. Youping Chen is a Professor in the Department of Mechanical and Aerospace Engineering at the University of Florida. Dr. Chen received her Ph.D from the Georgia Washington University in 2003 and jointed University of Florida in 2006. She was a recipient of DARPA Young Faculty Award in 2010 for “Predicting materials properties from their microstructural architecture”, DOE Early Career Award in 2011 for “Prediction of thermal transport properties of materials with microstructural complexity”, and nine US National Science Foundation Awards for multiscale studies of mechanics of advanced materials and thermal transport in heterostructures. Six of her former Ph.D students are now university professors and two are US national laboratory scientists. For her “excellence, innovation, and effectiveness in doctoral student advising and mentoring”, Dr. Chen was selected as a Herbert Wertheim College of Engineering Doctoral Dissertation Advisor/Mentoring Awardee in 2022.


Post-Doctoral Associates

Yang Li

Yang Li

Postdoctoral Associate

Yang’s doctoral research was focused on the PbTe/PbSe interfaces. His CAC simulations of phonon thermal transport identified local vibrational modes of misfit dislocation networks and demonstrated phonon-dislocation resonance, as well as the collective behavior of phonons, interfaces, and  dislocation networks. Yang also simulated the kinetic processes of  PbTe/PbSe heteroepitaxy and captured the growth modes, the critical thickness for dislocation nucleation, as well as the mechanisms for dislocation nucleation, interaction, and annihilations. 

 

 


Current PhD Students

Boyang Gu

Boyang Gu

Ph.D Student

Boyang has developed a prism element to enable the CAC method to capture the nucleation, propagation and interactions of dislocations and cracks . His simulations have reproduced the central crack formation in Si micro-pillars under compression, a mesoscale phenomenon widely observed in experiments. His simulations have identified, for the first time, the mechanism underlying the size-dependent brittle-to -ductile transition: crack formation as a result of dislocation intersections. 

Time sequences of the normal stress on the plane z=0,  at strain (b) 3%, (c)  3.5%, (d) 4%, (e)  4.5% and (f)  5%, showing the process of the dislocation intersection and the initiation of the central crack.


Jiaqi Sun

Jiaqi Sun

Ph.D Student

Jiaqi has been working on finite-temperature CAC, heteroepitaxial growth on defected substrates, and collective behavior of dislocations, interfaces, and phonons. His work on GaN/AlN interfaces has been featured on the front cover of the Journal of Applied Physics.


Sathyanarayanan Sivadas

Sathyanarayanan Sivadas

Ph.D student

Sathyan joined our group in 08/2022.  His dissertation research is focused on artificial Intelligence  and machine Learning.


Nicholas A Taormina

Nicholas A Taormina

Ph.D student

Nick joined our group on 01/2023 as an undergraduate researcher and started his Ph.D on 08/2023. Nick’s Ph.D research aims to address the universal challenge for microelectronics  and power electronics: self-heating.

Nick is a recipient of the Herbert Wertheim College of Engineering Dean’s Research Award and the Kirkland Fellowship. 

 


Emir Bilgili

Emir Bilgili

Ph.D student

Emir joined our group on 01/2023 as an undergraduate researcher. Emir will start his Ph.D on 01/2024. 


John Andrew Faiella

John Andrew Faiella

Undergraduate researcher

Jake joined our group on 01/2023 as an undergraduate researcher. Jake is interested in fracture mechanics research.

Jake is also a gifted musician.