Stability of amphiphilic Janus dimers in shear flow: a molecular dynamics study

Abstract

<p>Amphiphilic Janus particles in a flow are thought to experience a torque due to the asymmetry in slip at their surfaces. This effect has the potential to destabilise self-assembled Janus...</p>

Self-assembly of curved aromatic molecules in nanoparticles

“…For example, covalent bonding between fPAHs and cPAHs may explain why soot particles do not form janus particles [76,77]. These results are also of interest in developing janus colloidal systems where interesting flow dynamics and self-assembly are predicted [78,79].…”

Asymmetric Assembly of Lennard-Jones Janus Dimers

“…MD studies of JPs can typically be categorised into those which model Janus particles as single 'atoms' using point potentials [17,20,22,46] or those which represent spherical JPs as collections of atoms distributed over the sphere's surface (Fig. 1(a)) [47][48][49][50][51]. A manyatom JP is important for the study of hydrodynamic effects such as the effect of slip on particle rotation and translation [51][52][53][54].…”

“…A manyatom JP is important for the study of hydrodynamic effects such as the effect of slip on particle rotation and translation [51][52][53][54]. Here we use the latter approach, with Janus spheres modelled as in our previous studies [50,51], where the atoms were distributed over the surface of the spheres with a surface density of 1.3 σ −2 . In each simulation, the positions of atoms on the JP surface were varied based on a randomised process [51], avoiding artefacts associated with regular structures (see the Supplemental Material [45]).…”