Ph.D., Columbia University
, New York, NY
Exp. 2024
Department of Earth and Environmental Sciences
M.Sc., Columbia University
, New York, NY
Dec 2018
Department of Applied Physics and Applied Mathematics
B.Eng., Soochow University
, Suzhou, China
Jun 2017
College of Nano Science and Technology
Graduate Research Assistant & Software Developer, Columbia University
Sep 2019 - Present
Lamont-Doherty Earth Observatory
Graduate Researcher, Columbia University
Mar 2018 - May 2019
Department of Applied Physics and Applied Mathematics
Visting Student, Chinese Academy of Sciences
Mar 2017 - Jun 2017
Printable Electronics Research Center
Summer Research Intern, Chinese Academy of Sciences
Jul 2016 - Aug 2016
Advanced Thermal Interface Materials & Devices Lab
Undegraduate Researcher, Soochow University
Jan 2015 - Jun 2017
College of Nano Science and Technology
Fe partitioning among lower mantle phases has non-monotonic behavior owing to the high-spin to a low-spin crossover of iron in ferropericlase (Fp) at pressure-temperature conditions of this region.
First part: study the post-perovskite transition in Fe- and Al-bearing bridgmanite. Final target: organize ab initio results and engage in packages and database.
View Paper View Poster View TalkAdvanced free energy model exploring the HS-LS solid solution for iron spin crossover of Fe2+ in ferropericlase (Fp), impacting the lower mantle.
View Paper1 View Paper2 View Poster View TalkA useful tool to compute thermodynamic properties at extreme conditions, i.e., high temperature or pressure, by addressing effects: anharmonicity, electronic thermal excitations. Examples: CaPv, B8-type FeO.
View Paper View Code View PosterThe likely stable phase of Fe at extreme conditions of terrestrial planetary cores, and its thermodynamic calculations based on various physical models.
View Paper View BlogExplore our research group’s PAW pseudopotential library, showcasing mineralogy essentials (O, Na, Mg, Al, Si, etc) and rare Earth elements (La-Lu).
View Code Visit Lab's Site My AWS-hosted SiteIncluding multiple websites and webapps designs, i.e., group website for Wentzcovitch research group, github page for our lab organization, customized website designs.
Service and Milestones
L. Cobden, J. Zhuang, W. Lei, R. M. Wentzcovitch, J. Trampert, and J. Tromp, Full-waveform tomography reveals iron spin crossover in Earth’s lower mantle, Nature Communications, Under Review (2023).
H. Wang, J. Zhuang, Zhen Zhang, Qi Zhang, and R. M. Wentzcovitch, pgm: a phyton package for computation of free-energy using T-dependent phonon frequencies,Comp. Phys. Comm. (2023).
R. M. Wentzcovitch, J. Valencia Cardona, J. Zhuang, G. Shukla, K. Sarkar, The Post-Perovskite Transition in Fe- and Al-Bearing Bridgmanite: Effects on Seismic Observables, J. Geophys. Res. (2023).
Q. Zhang, C. Gu, J. Zhuang, and R. M. Wentzcovitch, express: extensible, high-level workflows for swifter ab initio materials modeling, Comp. Phys. Comm. (2022).
Y. Sun, J. Zhuang and R. M. Wentzcovitch, LDA+Usc calculation of spin crossover in ferropericlase, Electronic Structure (2022).
J. Zhuang, H. Wang, Q. Zhang, R. M. Wentzcovitch, Thermodynamic properties of ε-Fe with thermal electronic excitation effects on vibrational spectra, Phys. Rev. B (2021).
Dean’s fellowship, Columbia University
2019
17th Academic Research Scholarship, Soochow University
2015
Exchange Student Scholarship, Soochow University
2014
Graduate Teaching Assistant, Columbia University
Materials Thermodynamics and Phase Diagrams (grader)
May 2022
Dinosaurs and the History of Life (lecture & lab)
Sep 2021 - Dec 2021
Earth’s Environmental Systems: Solid Earth (lecture & lab)
Jan 2021 - May 2021
Spin crossover in ferropericlase: beyond ideal HS-LS ideal solid solution model, American Physical Society March Meeting in Las Vegas, NV, Mar 2023 (poster).
pgm: A Python package for free energy calculation, American Physical Society March Meeting in Las Vegas, NV, Mar 2023 (presentation).
The post-perovskite transition in Fe- and Al-bearing bridgmanite, American Geophysical Union Fall Meeting in Chicago, IL, Dec 2022.
The post-perovskite transition in Fe- and Al-bearing bridgmanite, American Physical Society March Meeting in Chicago, IL, Mar 2022 (focused session speaker).
Spin crossover in ferropericlase: beyond ideal solid solution model, American Physical Society March Meeting in Chicago, IL, Mar 2022 (poster).
pgm: A Python package for anharmonic free energy calculations, American Physical Society March Meeting in Chicago, IL, Mar 2022 (poster).
Spin crossover in ferropericlase in the Earth’s lower mantle from LDA + USC calculations, American Geophysical Union Fall Meeting in New Orleans, LA, Dec 2021 (poster).
pgm: A Python package for free energy calculation, American Physical Society March Meeting online, Mar 2021 (speaker).
pgm: A Python package for free energy calculation, American Geophysical Union Fall Meeting online, Dec 2020 (poster).
Thermodynamic properties of ε-iron with T-dependent phonons, American Physical Society March Meeting in Boston, MA, Mar 2019 (speaker).
Thermodynamic properties of ε-Fe at inner core conditions using T-dependent phonon dispersions, American Geophysical Union Fall Meeting in Washington, DC, Dec 2018 (poster).
Workshops Attended
Presenter, US-Africa Initiative in Electronic Structure Workshop
Mar 2021
Workshops Organized
Organizer, US-Africa Initiative in Electronic Structure Workshop
May 2022
Held virtually [site]
Organizer, 2022 Workshop on Recent Developments in Electronic Structure (ES22)
May - Jun 2022
Held by Columbia University, NY USA [site]
Sessions Chaired
American Physical Society March Meeting 2023
March 2023
Session chair of TT02 V: Computational Methods for Statistical Mechanics - Advances and Applications, APS March Meeting in Las Vegas, Nevada and Virtual.