Heterogeneous rotational dynamics of imidazolium-based organic ionic plastic crystals

CB Park, BJ Sung - The Journal of Physical Chemistry B, 2020 - ACS Publications
Organic ionic plastic crystals (OIPCs) are a unique class of materials that undergo
orientational and conformational motions while maintaining a long-range ordered lattice …

The effects of vacancies and their mobility on the dynamic heterogeneity in 1, 3-dimethylimidazolium hexafluorophosphate organic ionic plastic crystals

H Park, CB Park, BJ Sung - Physical Chemistry Chemical Physics, 2021 - pubs.rsc.org
Organic ionic plastic crystals (OIPCs) are the crystals of electrolytes with a long-range
translational order. The rotational modes of ions in OIPCs are, however, activated even in …

The linear relationship between diffusivity and crystallization kinetics in a deeply supercooled liquid Ni50Ti50 alloy

S An, Y Li, J Li, S Zhao, B Liu, P Guan - Acta Materialia, 2018 - Elsevier
The NiTi amorphous alloys are heated to melting (just above T g) using pulsed laser
irradiation to manufacture NiTi shape memory alloys (SMAs). It has been found that the …

Influence of chain stiffness on the dynamical heterogeneity and fragility of polymer melts

D Pan, ZY Sun - The Journal of chemical physics, 2018 - pubs.aip.org
It is well accepted that stiffer polymers have higher glass transition temperatures. However,
the influence of chain stiffness on the slow dynamics and dynamical heterogeneity when …

Machine learning predicts the glass transition of two-dimensional colloids besides medium-range crystalline order

EC Kim, DJ Chun, CB Park, BJ Sung - Physical Review E, 2023 - APS
We employ only the positions of colloidal particles and construct machine learning (ML)
models to test the presence of structural order in glass transition for two kinds of two …

History-dependent nonequilibrium conformations of a highly confined polymer globule in a sphere

S Kwon, BJ Sung - Physical Review E, 2020 - APS
Chromatin undergoes condensation-decondensation processes repeatedly during its cell
lifetime. The spatial organization of chromatin in nucleus resembles the fractal globule, of …

Translational dynamics of a rod-like probe in supercooled liquids: an experimentally realizable method to study Stokes–Einstein breakdown, dynamic heterogeneity …

A Mutneja, S Karmakar - Soft Matter, 2021 - pubs.rsc.org
The use of probe molecules to extract the local dynamical and structural properties of
complex dynamical systems is an age-old technique both in simulations and in experiments …

The non-classical kinetics and the mutual information of polymer loop formation

YR Lee, S Kwon, BJ Sung - The Journal of Chemical Physics, 2020 - pubs.aip.org
The loop formation of a single polymer chain has served as a model system for various
biological and chemical processes. Theories based on the Smoluchowski equation …

Random first order transition theory for glassy dynamics in a single condensed polymer

HW Cho, G Shi, TR Kirkpatrick, D Thirumalai - Physical Review Letters, 2021 - APS
The number of compact structures of a single condensed polymer (SCP), with similar free
energies, grows exponentially with the degree of polymerization. In analogy with structural …

Role of α and β relaxations in collapsing dynamics of a polymer chain in supercooled glass-forming liquid

M Mukherjee, J Mondal, S Karmakar - The Journal of Chemical …, 2019 - pubs.aip.org
Understanding the effect of glassy dynamics on the stability of bio-macromolecules and
investigating the underlying relaxation processes governing degradation processes of these …