EVENTS

Upcoming Events

December 5, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Yu Jin –  (Galli Group)
“Vibrationally resolved optical excitations of the nitrogen-vacancy center in diamond”

 

 

 

January 9, 2023

CCTCh Group Meeting

2:00 PM | Zoom

TBD –  (Roux Group)

 

 

February 6, 2023

CCTCh Seminar

2:00 PM | TBD and Zoom

Professor Anatole von Lilienfeld, University of Toronto

Anatole has been the inaugural Clark Chair in Advanced Materials at the Vector Institute and at University of Toronto since 2022. Prior to that he was a Full Professor for “Computational Materials Discovery” at the Faculty of Physics at the University of Vienna. From 2013-2020, Anatole held Associate and Assistant Professorship positions at the University of Basel, and the Free University of Brussels. Until 2013, he worked as an Assistant Computational Scientist at the Argonne National Laboratory’s Leadership Computing Facility. In spring 2011, he chaired the 3 months program, “Navigating Chemical Compound Space for Materials and Bio Design” at the Institute for Pure and Applied Mathematics at UCLA. From 2007 to 2010 Anatole was a Distinguished Harry S. Truman Fellow at Sandia National Laboratories. Anatole carried out postdoctoral research at the Max-Planck Institute for Polymer Research (2007) and at New York University (2006). He received a PhD in computational chemistry from EPF Lausanne in 2005. He performed his diploma thesis work within an Erasmus exchange program at ETH Zürich and the University of Cambridge. He studied chemistry as an undergraduate at ETH Zürich, the École de Chimie, Polymères, et Matériaux in Strasbourg, and at the University of Leipzig.

 

 

March 6, 2023

CCTCh Seminar

4:00 PM | Zoom

Professor William James Glover, New York University Shanghai

Will Glover received his PhD from the University of California, Los Angeles, in 2009 and has since held postdoctoral fellowships at Stanford and UCLA. In his research, Professor Glover uses the concepts and tools of statistical mechanics and quantum mechanics, in combination with high-performance computational simulation methods to understand condensed- and gas-phase dynamics—at the atomistic, “first principles” level—that produce testable predictions with regard to measurable (e.g. spectroscopic) phenomena. He is already quite widely published including in the prestigious journal Science.

 

 

April 3, 2023

CCTCh Group Meeting

2:00 PM | Zoom

TBD –  (Vaikuntanathan Group)

 

 

May 1, 2023

CCTCh Group Meeting

2:00 PM | Zoom

TBD –  (Voth Group)

 

 

June 5, 2023

CCTCh Group Meeting

2:00 PM | Zoom

TBD –  (Dinner Group)

 

 

Past Events

November 7, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Abhishek Mitra –  (Gagliardi Group)
“Local Excitations in Point Defects and Surface Binding using a Periodic Density Matrix Embedding Framework”

 

 

October 17, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Cal Floyd –  (Dinner and Vaikuntanathan Groups)

“Signatures of odd dynamics in viscoelastic systems: from spatiotemporal pattern formation to odd rheology”

 

 

September 19, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Leeann Sager-Smith –  (Mazziotti Group)

“Entangled phase of simultaneous fermion and exciton condensations realized”

 

 

June 17, 2022

CCTCh Seminar

11:00 AM | GCIS W301/W303

Professor Biman Bagchi, Solid State and Structural Chemistry Unit of the Indian Institute of Science

“Diffusion-Entropy Scaling through a Multidimensional Rate Theory”

Professor Biman Bagchi is currently serving as the India National Science Chair (DST-SERB) and holds a Honorary Professorship at the Solid State and Structural Chemistry Unit (SSCU), Indian Institute of Science (IISc), Bangalore. He received his PhD from Brown University, RI and carried out postdoctoral work at the University of Chicago and University of Maryland, before returning to India in 1984 to join the Indian Institute of Science. He is a Fellow of all the three National Science Academies of India, an elected Fellow of the third world academy of sciences (TWAS) and Elected Foreign Member of the American Academy of Arts and Sciences (2020) [AAA&S] He is the recipient of the 2021 Joel Henry Hildebrand Award from the American Chemical Society in Theoretical and Experimental Chemistry of Liquids, Humboldt Science Research Award of Alexander von Humboldt Foundation (2019). He has also received a fair number of Awards in India. And J. Physical Chemistry brought out a Festschrift special issue J. Phys. Chem. B, 2015, Vol.: 119, in his honour. Bagchi has authored three books on different aspects of statistical mechanics and currently writing a 4th book on nonequilibrium statistical mechanics. He has also published two non-technical books available at Amazon Kindle.

Relationship between entropy and relaxation has been a subject of inquiry since the time of Boltzmann who introduced his famous H-Theorem and remarked on its relation with entropy. This relationship has been further established through Adam-Gibbs relation and also Rosenfeld scaling hypothesis. We shall discuss a derivation of the diffusion-entropy scaling in a two-dimensional periodic lattice, using the multidimensional rate theory. We shall discuss a two-dimensional periodic system that displays interesting coherences in trajectories, leading to a non-monotonic friction dependence of diffusion. We discuss a simple random walk model that surprisingly could capture the non-monotonicity of diffusion (partly) and the behaviour at large friction (quantitatively). We shall also discuss, if time permits, a few biophysical problems that we are studying in our group.

June 6, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Daniel Beckett (Voth Group)

“Multiscale Investigations of Microtubule Catastrophe”

 

May 2, 2022

CCTCh Seminar

2:00 PM | Zoom

Professor Shaama Sharada, University of Southern California

“The pursuit of free energies and free energy relationships”

Shaama Mallikarjun Sharada is the WiSE Gabilan Assistant Professor in the Mork Family Department of Chemical Engineering and Materials Science. Shaama completed her Bachelors and Masters degree in Chemical Engineering at the Indian Institute of  Technology, Bombay. After a brief stint in management consulting in Mumbai, she joined the PhD program at UC Berkeley, where she developed automated reaction path search methods and examined structure-activity relationships in zeolite catalysts using quantum chemistry. Her postdoctoral research at Stanford University involved the development of accurate benchmarking databases for surface chemistry, and density functional theory development using Bayesian learning approaches. She joined MFD in Fall 2017.

Shaama’s research focuses on developing catalysts and photocatalysts to meet energy-efficiency and sustainability goals. Her group utilizes quantum chemistry to find active, selective, and stable catalytic materials for efficient valorization of CH bonds and green conversion of anthropogenic carbon dioxide. Shaama is also keen on making quantum chemical predictions more reliable. She is developing algorithms inspired from signal processing to make otherwise prohibitive but accurate kinetics theories more tractable for routine studies.

April 4, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Benchen Huang (Galli Group)

“Simulating the Electronic Structure of Spin Defects on Quantum Computers”

 

March 7, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Agnish Behera (Vaikuntanathan Group)

“Enhancing associative memory recall in non-equilibrium materials through activity”

 

January 10, 2022

CCTCh Group Meeting

2:00 PM | Zoom

Adam Antoszewski (Dinner Group)

“Enhanced Sampling and Dynamical Analysis of Insulin Equilibria”

 

December 6, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Scott Smart (Mazziotti Group)

“Exploring Quantum Simulation on Noisy Intermediate-Scale Quantum Devices”

 

November 1, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Professor Stuart Rice, University of Chicago

Why/How Pinning Molecules in a 2D System Shifts the Solid-to-Hexatic Phase Transition”

Stuart A. Rice is the Frank P. Hixon Distinguished Service Professor, Emeritus, in the Department of Chemistry and The James Franck Institute of The University of Chicago. During his tenure at the University of Chicago, Professor Rice has trained more than 100 Ph.D. students and postdoctoral researchers. He received a B.S. degree from Brooklyn College in 1952 and A.M. and Ph.D. degrees from Harvard University in, respectively, 1954 and 1955. He has carried out theoretical and experimental research in diverse areas of physical chemistry, amongst which are: transport theory for dense liquids, exciton-exciton interactions, exciton and charge carrier band structures of molecular crystals and liquids, structure of the liquid metal-vapor interface, radiationless transitions, non-statistical behavior in unimolecular reactions, random network model of water, quantum and classical deterministic chaos, active control of molecular dynamics, structure, phase transitions and diffusive motion in quasi-one and quasi-two-dimensional colloid assemblies, and several other subjects. He has coauthored four books: Polyelectrolyte Solutions with Mitsuru Nagasawa, The Statistical Mechanics of Simple Liquids, with Peter Gray, Optical Control of Molecular Dynamics, with Meishan Zhao, and Physical Chemistry, with R. Steven Berry and John Ross. He has received the National Medal of Science (1999) and the Wolf Prize in Chemistry (2011), the American Chemical Society Pure Chemistry, Baekland, Debye and Hildebrand Awards, as well as the Hirschfelder Prize in Theoretical Chemistry, and the Centennial Medal of Harvard University.

October 4, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Alvin Yu, Postdoc (Voth Group)
“Multiscale Simulation of Viruses”

September 13, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Paul Calio, Postdoc (Gagliardi Group)
“Incorporating MC-PDFT Gradients into ab initio molecular dynamics simulations”

 

 

August 2, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Chatipat Lorpaiboon, Graduate Student (Dinner Group)
“Improving transition path theory with extended committors”

TBD (Roux Group)

July 12, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Arpan Kundu, Postdoc & Tony Song, Undergraduate Researcher (Galli Group)
“Quantum vibronic effects on electronic properties of solid and molecular carbon”

 

June 7, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Matthew Hermes, Staff Scientist (Gagliardi Group)
“The localized active space approach to strong electron correlation using quantum computers”

Jan-Niklas Boyn, Graduate Student (Mazziotti Group)
“Quantum-Classical Hybrid Algorithm for the Simulation of All-Electron Correlation”

May 3, 2021

CCTCh Group Meeting

2:00 PM | Zoom

Jaehyeok Jin, Graduate Student (Voth Group)
“New Perspectives on the Dynamics of Coarse-Grained Models”

Alexandra Lamtyugina, Graduate Student (Vaikuntanathan Group)
“Relating Energy Dissipation to Effective Interactions and Structure Formation in Cross-Linked Biopolymers”

Pratyush Tiwary
April 5, 2021

CCTCh Seminar

Professor Pratyush Tiwary, University of Maryland, College Park

“Can artificial intelligence help understand and predict molecular dynamics?”

2:00 PM | Zoom

The ability to rapidly learn from high-dimensional data to make reliable predictions about the future is crucial to life. This could be a fly avoiding predators, or the retina processing terabytes of data guiding complex human actions. Modern day artificial intelligence (AI) aims to mimic this fidelity and has been successful in many domains. It is tempting to ask if AI could also be used to understand and predict the dynamics of complex molecules with millions of atoms. In this talk I will show that certain flavors of AI can indeed help us understand generic molecular dynamics and also predict it even in situations with arbitrary long memories. However this requires close integration of AI with old and new ideas in statistical mechanics. I will talk about such methods developed by my group (1-3). I will demonstrate the methods on different problems, where we predict mechanisms at timescales much longer than milliseconds while keeping all-atom/femtosecond resolution. These include ligand dissociation from flexible protein/RNA and crystal nucleation with competing polymorphs. I will conclude by discussing some generic challenges and solutions regarding reliability, interpretability and extrapolative powers of AI when used in molecular simulations.

References:

1. Wang, Y., Ribeiro, J.M.L. & Tiwary, P. Past–future information bottleneck for sampling molecular reaction coordinate simultaneously with thermodynamics and kinetics. Nat. Commun. 10, 3573 (2019). https://doi.org/10.1038/s41467-019-11405-4

2. Tsai, S.T, Kuo, E.J. & Tiwary, P.  Learning Molecular Dynamics with Simple Language Model built upon Long Short-Term Memory Neural Network. Nat. Commun. 11, 5115 (2020). https://doi.org/10.1038/s41467-020-18959-8

3. Wang, Y., Ribeiro, J.M.L. and Tiwary, P. Machine learning approaches for analyzing and enhancing molecular dynamics simulations. Curr. Op. Sruc. Bio., 61, 139 (2020). https://doi.org/10.1016/j.sbi.2019.12.016

David Limmer
March 1, 2021

CCTCh Seminar

Professor David Limmer, University of California, Berkeley

“Computing and decoding fluctuations in systems far from equilibrium”

3:00 PM | Zoom

In this talk, I will discuss some recent efforts to develop a set of theoretical and simulation tools to study many body systems driven away from equilibrium. This work leverages recent advancements in the study of large deviations and control theory, as well as the burgeoning area of stochastic thermodynamics. Generalizations of the fluctuation-dissipation theorem, and variational statements of stability for nonequilibrium systems, will be demonstrated. Specific questions concerning electrokinetic phenomena in ionic solutions confined to nanoscale dimensions and the self assembly of active and proliferating matter will be addressed.

Flyer_Symposium on Theoretical Chemistry
October to November 2020

Symposium on Theoretical Chemistry

PKU-UChicago Joint Lecture Series

Lecture 1 (October 19/20): Frontiers of Biomolecular Theory & Simulation
Speakers: Gregory Voth, University of Chicago & Yiqin Gao, Peking University
Moderator: Chen Li, Peking University

Lecture 2 (October 26/27): Quantum Simulations of Heterogeneous Materials on Classical and Near-term Quantum Computers & Ensemble-based Thermodynamics of the Fuzzy Binding between Intrinsically Disordered Proteins and Small Molecule Ligands: Principle and Application
Speakers: Giulia Galli, University of Chicago & Zhirong Liu, Peking University
Moderator: Chen Li, Peking University

Lecture 3 (November 2/3): Complex Reaction Mechanisms and Drug Design
Speakers: Aaron Dinner, University of Chicago & Luhua Lai, Peking University
Moderator: Chen Li, Peking University

Lecture 4 (November 9/10): When Quantum Computing Meets DFT
Speakers: David A. Mazziotti, University of Chicago & Chen Li, Peking University

Lecture 5 (November 16/17): Non-equilibrium Thermodynamic and Quantum Dynamics
Speakers: Suriyanarayanan Vaikuntanathan, University of Chicago & Jian Liu, Peking University
Moderator: Chen Li, Peking University

Lecture 6 (November 23/24): Strong Correlation and Band Structure
Speakers: Laura Gagliardi, University of Chicago & Hong Jiang, Peking University
Moderator: Chen Li, Peking University

John Weeks
December 10, 2019

2019 Rice-Berry Lecture of the CCTCh

Professor John D. Weeks, University of Maryland, College Park

“Solvation, Structure, and Simulations of Systems with Strong Coulomb Interactions: The Long and Short of It”

3:45 PM | GCIS W301/W303

John D. Weeks is a Distinguished University Professor in the Department of Chemistry and the Institute for Physical Science and Technology at the University of Maryland, College Park. He earned his bachelor’s degree from Harvard University (1965) and then completed his PhD at the University of Chicago working with Stuart Rice (1969). John then moved to the University of California, San Diego for a postdoctoral fellowship in the group of Kurt Shuler. There, along with another postdoc in the group, David Chandler, and Hans Andersen (then an assistant professor at Stanford), he put together an elegant, powerful, and definitive framework to understand the structure of strongly interacting uniform simple liquids. This framework—commonly referred to as WCA in honor of Weeks, Chandler, and Andersen—has been used for understanding the properties of many nonpolar molecular liquids. John then moved to AT&T Bell Labs and pioneered work on the statistical mechanics of interfaces. In particular, John and his co-workers developed a statistical mechanics framework to describe a new transition governing the roughness of crystal interface. They showed that this “roughening” transition falls in the same class as the KTHNY transition that governs topological defect formation in two-dimensional solids. In 1990, John moved to the University of Maryland, College Park where he has been ever since. His recent work focuses on the conceptual development of a general theory of nonuniform ionic and dipolar fluids, focusing on hydrophobic and ionic solvation properties in aqueous solutions. John’s work has been recognized by multiple awards and honors, including elections to the National Academy of Sciences and American Academy of Arts and Sciences, as well as the Joel Henry Hildebrand Award from the American Chemical Society.

Bruce Berne
May 6, 2019

Inaugural Rice-Berry Lecture of the CCTCh

Professor Bruce J. Berne, Columbia University