scholarly journals Conformations and Effective Interactions of Polymer-Coated Nanoparticles at Liquid Interfaces

Langmuir ◽  
2014 ◽  
Vol 30 (42) ◽  
pp. 12578-12586 ◽  
Author(s):  
Konrad Schwenke ◽  
Lucio Isa ◽  
David L. Cheung ◽  
Emanuela Del Gado
Keyword(s):  
Liquid Interfaces ◽  
Effective Interactions ◽  
Coated Nanoparticles

scholarly journals Modeling of effective interactions between ligand coated nanoparticles through symmetry functions

2021 ◽  
Author(s):  
Dinesh Chintha ◽  
Shivanand Kumar Veesam ◽  
Emanuele Boattini ◽  
Laura Filion ◽  
Sudeep Neelakantan Punnathanam
Keyword(s):  
Effective Interactions ◽  
Coated Nanoparticles

Soft repulsive interactions, particle rearrangements and size selection in the self-assembly of nanoparticles at liquid interfaces

2015 ◽  
Vol 181 ◽  
pp. 261-280 ◽  
Author(s):  
Konrad Schwenke ◽  
Emanuela Del Gado
Keyword(s):  
Adsorption Kinetics ◽  
Self Assembly ◽  
High Surface ◽  
Qualitative Change ◽  
Model Potential ◽  
Liquid Interfaces ◽  
Slow Dynamics ◽  
Irreversible Adsorption ◽  
Effective Interactions ◽  
Size Selection

In the adsorption of nanoparticles at liquid interfaces, soft and short ranged repulsive effective interactions between the nanoparticles at the interface may eventually induce crowding, slow dynamics and jamming at high surface coverage. These phenomena can interfere during the adsorption process, significantly slowing down its kinetics. Here, by means of numerical simulations, we find that modifying the effective interactions, which can be achieved for example by grafting differently functionalized polymer shells on the bare nanoparticles, may qualitatively change such interplay. In particular our results suggest that, in the presence of ultrasoft particle interactions such as the ones described by a Gaussian Core Model potential, a small size polydispersity can be sufficient to decouple the adsorption kinetics from the slow dynamics that develops at the interface, due to a qualitative change from an irreversible adsorption controlled by particle rearrangements at the interface to one dominated by size selection mechanisms. These findings may be useful to achieve higher surface coverages and faster adsorption kinetics.

EFFECTIVE INTERACTIONS AND THE EXCITATION OF GIANT RESONANCES

1984 ◽  
Vol 45 (C4) ◽  
pp. C4-231-C4-249
Author(s):  
W. G. Love ◽  
M. A. Franey
Keyword(s):  
Giant Resonances ◽  
Effective Interactions

Effective Interactions Approach to Phase Stability in Alloys Under Irradiation

1998 ◽  
Vol 538 ◽  
Author(s):  
Raúl A. Enrique ◽  
Pascal Bellon
Keyword(s):  
Phase Diagram ◽  
Phase Stability ◽  
Kinetic Monte Carlo ◽  
Theoretical Frameworks ◽  
Effective Interactions ◽  
Dynamical Phase ◽  
Thermodynamic Potentials ◽  
Simple Kinetic Model ◽  
Kinetic Monte Carlo Simulations ◽  
Competing Dynamics

AbstractPhase stability in alloys under irradiation is studied considering effective thermodynamic potentials. A simple kinetic model of a binary alloy with phase separation is investigated. Time evolution in the alloy results from two competing dynamics: thermal diffusion, and irradiation induced ballistic exchanges. The dynamical (steady state) phase diagram is evaluated exactly performing Kinetic Monte Carlo simulations. The solution is then compared to two theoretical frameworks: the effective quasi-interactions model as proposed by Vaks and Kamishenko, and the effective free energy model as proposed by Martin. New developments of these models are proposed to allow for quantitative comparisons. Both theoretical frameworks yield fairly good approximations to the dynamical phase diagram.

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