128 0

Liquid Cell Electron Microscopy of Nanoparticle Self-Assembly Driven by Solvent Drying

Title
Liquid Cell Electron Microscopy of Nanoparticle Self-Assembly Driven by Solvent Drying
Author
이원철
Keywords
X-RAY-SCATTERING; NANOCRYSTAL SUPERLATTICE; GOLD NANOPARTICLES; RINGS; GROWTH; INTERFACE; NETWORKS; MODEL
Issue Date
2017-02
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY LETTERS, v. 8, No. 3, Page. 647-654
Abstract
Drying a colloidal solution of nanoparticles is a versatile method to construct self assembled structures of nanoparticles. However, mechanistic understanding has mostly relied on empirical knowledge obtained from the final structures of self-assembly as relevant processes during solvent drying are likely kinetic and far from equilibrium. Here, we present in situ TEM studies of nanoparticle self-assembly under various conditions, including the concentrations of the initial solution and the types of nanoparticles and substrates. The capability of tracking trajectories of individual nanoparticles enables us to understand the mechanisms of drying-mediated self assembly at the single-nanoparticle level. Our results consistently show that a solvent boundary primarily affects nanoparticle motions and the resulting self-assembly processes regardless of different conditions. The solvent boundary drives nanoparticles to form two-dimensional assembly mainly through two pathways, transporting scattered nanoparticles by lateral dragging and flattening aggregated nanoparticles by vertical pressing.
URI
https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.6b02859https://repository.hanyang.ac.kr/handle/20.500.11754/103147
ISSN
1948-7185
DOI
10.1021/acs.jpclett.6b02859
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE