Multiphasic size-dependent growth dynamics of nanoparticle ensembles
Abstract
Colloidal nanoparticles are of great interest in modern science and industry. However, the thermodynamic mechanism and dynamics of nanoparticle growth have yet to be understood. Addressing these issues, we tracked hundreds of in-situ growth trajectories of a nanoparticle ensemble using liquid-phase TEM and found that the nanoparticle growth, including coalescence, exhibits nanoparticle size-dependent multiphasic dynamics, unexplainable by current theories. Motivated by this finding, we developed a model and theory for an ensemble of growing nanoparticles, providing a unified, quantitative understanding of the time-dependent mean and fluctuation of nanoparticle size and size-dependent growth rate profiles across various nanoparticle systems and experimental conditions. Our work reveals that the chemical potential in a small nanoparticle strongly deviates from the Gibbs–Thomson equation, shedding light on how it governs the size-dependent growth dynamics of nanoparticles.
Article Details
Journal Info
Proceedings of the National Academy of Sciences
National Academy of Sciences
Authors (23)
Ji-Hyun Kim
Global Science Research Center for Systems Chemistry
Joodeok Kim
Department of Chemical and Biological Engineering, and Institute of Chemical Processes
Byung Hyo Kim
Center for Nanoparticle Research
Sanggeun Song
Department of Chemical and Biomolecular Engineering
Jingyu Kang
Global Science Research Center for Systems Chemistry
Jinho Rhee
Department of Chemical and Biological Engineering, and Institute of Chemical Processes
Donghee Kim
Global Science Research Center for Systems Chemistry
Hoje Chun
Department of Chemical and Biomolecular Engineering, Yonsei University
Hyesung Choi
Center for Nanoparticle Research, Institute for Basic Science
Hyungjin Cho
Department of Materials Science and Engineering, Soongsil University
Yongjoon Kim
Department of Materials Science and Engineering, Soongsil University
Jae Won Jung
Department of Materials Science and Engineering, Soongsil University
Youngju Son
Center for Nanoparticle Research, Institute for Basic Science
Junhyeok Jung
Center for Nanoparticle Research, Institute for Basic Science
Kunwoo Park
Center for Nanoparticle Research, Institute for Basic Science
Sungho Jeon
Department of Materials Science and Engineering, University of Pennsylvania, 3231 Walnut Street, Philadelphia, Pennsylvania 19104, United States
Minho Lee
Department of Chemistry, Global Science Research Center for Systems Chemistry, Chung-Ang University
Byungchan Han
Won Chul Lee
Department of Mechanical Engineering, Brain Korea 21 FOUR Education Research Industry Cluster at Ansan-Advanced Materials, Components, Manufacturing Equipment Research Center, Hanyang University
Dongjun Kim
Center for Nanoparticle Research, Institute for Basic Science
Taeghwan Hyeon
Center for Nanoparticle Research
Jaeyoung Sung
Global Science Research Center for Systems Chemistry
Jungwon Park