Crystallization Behaviors of Polydisperse Ultra⁃soft Spherical System

doi:10.7503/cjcu20240388

Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (12): 20240388.doi: 10.7503/cjcu20240388

• Physical Chemistry • Previous Articles Next Articles

Crystallization Behaviors of Polydisperse Ultra⁃soft Spherical System

ZHAO Can¹(), SUN Guangkai¹, LEI Bocheng¹, ZHANG Lili¹, SUN Zhaoyan¹^,², ZHU Youliang¹^,³()

^1.Xinjiang Laboratory of Phase Transitions and Microstructures of Condensed Matter Physics，College of Physical Science and Technology，Yili Normal University，Yining 835000，China
^2.State Key Laboratory of Polymer Physics and Chemistry，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China
^3.State Key Laboratory of Supramolecular Structure and Materials，College of Chemistry，Jilin University，Changchun 130012，China

Received:2024-08-15 Online:2024-12-10 Published:2024-10-25
Contact: ZHAO Can, ZHU Youliang E-mail:zhaocanqq@sina.com;youliangzhu@ jlu.edu.cn
Supported by:
the General Scientific Research Projects of Yili Normal University, China(2021YSYB104);the College Student Innovation and Entrepreneurship Project, China(S202210764017);the Special Project of Yili Normal University to Enhance the Comprehensive Strength, China(22XKZY17)

Abstract

Abstract:

The systems of particles with ultra-soft potential interactions show complex phase behaviors， such as micro phase separation， reentrant melting and single phase change. In recent years， ultra-soft interaction system draws broad interest of research， but the crystallization behavior of this kind of material is still an open question. In this work， we use the molecular dynamics simulation method to investigate the static structures， diffusion and cluster living time of the ultra-soft spherical systems. By increasing dispersion of sphere size， the crystal structure gradually alters from cluster crystal to cluster glass. By analyzing the diffusion behavior of the polydisperse system and the lifetime of the dimer， it is found that the system has no long-range diffusion at low temperature， but obvious diffusion phenomenon occurs at high temperature. The lifetime of the dimer decreases upon the increase of temperature， or the increase of dispersion.

Key words: Ultrasoft particle, Crystallization, Molecular dynamics, Polydispersion

CLC Number:

O648

TrendMD:

ZHAO Can, SUN Guangkai, LEI Bocheng, ZHANG Lili, SUN Zhaoyan, ZHU Youliang. Crystallization Behaviors of Polydisperse Ultra⁃soft Spherical System[J]. Chem. J. Chinese Universities, 2024, 45(12): 20240388.

Figures/Tables 9

References 22

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Crystallization Behaviors of Polydisperse Ultra⁃soft Spherical System

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