Journal
ACS NANO
Volume 10, Issue 1, Pages 181-187Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b06632
Keywords
molecular dynamics; in situ microscopy; nanoparticles; attachment
Categories
Funding
- United States Department of Energy (DOE) through the University of California at Davis [DE-FG02-03ER46057]
- Laboratory Directed Research and Development (LDRD) Program: Chemical Imaging Initiative at Pacific Northwest National Laboratory (PNNL)
- Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility - DOE's Office of Biological and Environmental Research
- DOE [DE-AC05-76RL01830]
- National Science Foundation [NSF-1334012]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1334012] Funding Source: National Science Foundation
Ask authors/readers for more resources
Optimization of colloidal nanoparticle synthesis techniques requires an understanding of underlying particle growth mechanisms. Nonclassical growth mechanisms are particularly important as they affect nanoparticle, size and shape distributions, which in turn influence functional properties. For example, preferential attachment of nanoparticles is known to lead to the formation of mesocrystals, although the formation mechanism is currently not well-understood: Here we employ in situ liquid cell scanning transmission electron microscopy and steered molecular dynamics (SMD) simulations to demonstrate that the experimentally observed preference for end-to-end attachment, of silver nanorods is a result of weaker solvation forces occurring at rod ends. SMD reveals that when the side of a nanorod approaches another rod, perturbation in the surface-bound water, at the nanorod surface creates significant energy barriers to attachment. Additionally, rod morphology (i.e., facet shape) effects can explain the majority of the side attachment effects that are observed experimentally.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available