Dynamics of Nanoscale Dendrite Formation in Solution Growth Revealed Through in Situ Liquid Cell Electron Microscopy

Matthew R. Hauwiller, Xiaowei Zhang, Wen-I Liang, Chung-Hua Chiu, Qian Zhang, Wenjing Zheng, Colin Ophus, Emory M. Chan, Cory Czarnik, Ming Pan, Frances M. Ross, Wen-Wei Wu, Ying-Hao Chu, Mark Asta, Peter W. Voorhees, A. Paul Alivisatos, Haimei Zheng

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Formation mechanisms of dendrite structures have been extensively explored theoretically, and many theoretical predictions have been validated for micro-or macroscale dendrites. However, it is challenging to determine whether classical dendrite growth theories are applicable at the nanoscale due to the lack of detailed information on the nanodendrite growth dynamics. Here, we study iron oxide nanodendrite formation using liquid cell transmission electron microscopy (TEM). We observe "seaweed"-like iron oxide nanodendrites growing predominantly in two dimensions on the membrane of a liquid cell. By tracking the trajectories of their morphology development with high spatial and temporal resolution, it is possible to explore the relationship between the tip curvature and growth rate, tip splitting mechanisms, and the effects of precursor diffusion and depletion on the morphology evolution. We show that the growth of iron oxide nanodendrites is remarkably consistent with the existing theoretical predictions on dendritic morphology evolution during growth, despite occurring at the nanoscale.
Original languageEnglish (US)
Pages (from-to)6427-6433
Number of pages7
JournalNano Letters
Volume18
Issue number10
DOIs
StatePublished - Sep 26 2018
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Materials Science(all)
  • Chemistry(all)
  • Mechanical Engineering
  • Condensed Matter Physics

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