scholarly journals Brownian Motion and Large Electric Polarizabilities Facilitate Dielectrophoretic Capture of Sub‐200 nm Gold Nanoparticles in Water

ChemPhysChem ◽  
2019 ◽  
Vol 20 (24) ◽  
pp. 3354-3365 ◽  
Author(s):  
Clyde Midelet ◽  
Bruno Le Pioufle ◽  
Martinus H. V. Werts
2017 ◽  
Author(s):  
Tali Ilovitsh ◽  
Asaf Ilovitsh ◽  
Omer Wagner ◽  
Zeev Zalevsky

2020 ◽  
pp. 59-69
Author(s):  
Babalola Faith U.

Nanoparticles are commonly synthesized in colloidal systems, a liquid with suspended macromolecules. By the Brownian motion, these particles can collide and aggregate, leading to larger particles. To stabilize the aggregation process, charges induced by ions cause repulsion among the particles. Through the works of researchers in the past, various models for describing particles aggregation and stabilization have been developed and modified. These models are based on the popular DLVO theory, named after Derjaguin, Landau, Verwey and Overbreek. In this work, evidence illustrating aggregation and stabilization in gold nanoparticles synthesis is reported. Thereafter, models for describing aggregation by the Brownian motion and stabilization by the electrostatic effect are reviewed. The electrostatic effect among the particles is mathematically expressed as the cumulative sum of the Van der Waal’s energy of interaction and the electrostatic energy of repulsion. As the resulting stabilization model is too complex to solve, past researchers reported a simplified stabilization submodel and employed it in describing gold nanoparticles synthesis. Unfortunately, as shown in this review, the submodel failed to describe the synthesis as the aggregation process never stopped, thus making a case for a new modelling approach.


2017 ◽  
Vol 56 (5) ◽  
pp. 1365 ◽  
Author(s):  
Tali Ilovitsh ◽  
Asaf Ilovitsh ◽  
Omer Wagner ◽  
Zeev Zalevsky

2007 ◽  
Vol 44 (02) ◽  
pp. 393-408 ◽  
Author(s):  
Allan Sly

Multifractional Brownian motion is a Gaussian process which has changing scaling properties generated by varying the local Hölder exponent. We show that multifractional Brownian motion is very sensitive to changes in the selected Hölder exponent and has extreme changes in magnitude. We suggest an alternative stochastic process, called integrated fractional white noise, which retains the important local properties but avoids the undesirable oscillations in magnitude. We also show how the Hölder exponent can be estimated locally from discrete data in this model.


1986 ◽  
Vol 23 (04) ◽  
pp. 893-903 ◽  
Author(s):  
Michael L. Wenocur

Brownian motion subject to a quadratic killing rate and its connection with the Weibull distribution is analyzed. The distribution obtained for the process killing time significantly generalizes the Weibull. The derivation involves the use of the Karhunen–Loève expansion for Brownian motion, special function theory, and the calculus of residues.


2013 ◽  
Vol 51 (01) ◽  
Author(s):  
N Fekete-Drimusz ◽  
J de la Roche ◽  
F Vondran ◽  
CL Sajti ◽  
MP Manns ◽  
...  

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