(623h) Brownian Dynamic Simulation of the Motion of a Janus Particle Near a Boundary and Under Shear Flow

text-align:justify;text-justify:inter-ideograph"> mso-bidi-font-family:" times new roman>Brownian Dynamic
Simulation of the Motion of a Janus Particle Near " times new roman>  mso-bidi-font-family:" times new roman>a " times new roman>  mso-bidi-font-family:" times new roman>Boundary and Under Shear
Flow

text-align:justify;text-justify:inter-ideograph"> mso-bidi-font-family:" times new roman> 

text-align:justify;text-justify:inter-ideograph"> " times new roman>Zohreh Jalilvand ^{" times new roman>1} " times new roman>, Joel Koplik ^{" times new roman>2} " times new roman> and Ilona Kretzschmar ^{" times new roman>1} " times new roman>. mso-bidi-font-family:" times new roman>

text-align:justify;text-justify:inter-ideograph"> ^{mso-bidi-font-family:" times new roman>1} mso-bidi-font-family:" times new roman>Department of Chemical
Engineering, City College of the City University of New York.

text-align:justify;text-justify:inter-ideograph"> ^{mso-bidi-font-family:" times new roman>2} mso-bidi-font-family:" times new roman>Benjamin Levich institute City College of the City University
of New York. " times new roman>

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text-align:justify;text-justify:inter-ideograph;line-height:16.2pt"> mso-bidi-font-family:" times new roman>   Colloidal
particles dispersed in solutions play " times new roman>  mso-bidi-font-family:" times new roman>an " times new roman>  mso-bidi-font-family:" times new roman>important role in
many technological applications such as pharmaceuticals,
cosmetics, colloidal self-assembly and material design. Therefore, to
better understand the behavior of such systems knowing the
interaction between the particles and the boundaries is essential.

text-align:justify;text-justify:inter-ideograph;line-height:16.2pt"> mso-bidi-font-family:" times new roman>In this context, Janus
Particles with anisotropic surface properties possess biased interactions
including particle-particle interaction as well as interaction with the
boundaries due to dynamic orientation of the particle. Motivated " times new roman>  mso-bidi-font-family:" times new roman>by " times new roman>  mso-bidi-font-family:" times new roman>the potential
application, we aim to study the motion of Janus particles " times new roman>  mso-bidi-font-family:" times new roman>under different
conditions such as near a boundary including potential
interactions with  mso-bidi-font-family:" times new roman>a particle close by
and under shear flow. mso-bidi-font-family:" times new roman>

text-align:justify;text-justify:inter-ideograph;line-height:16.2pt"> 

text-align:justify;text-justify:inter-ideograph;line-height:16.2pt"> mso-bidi-font-family:" times new roman>  We " times new roman>  mso-bidi-font-family:" times new roman>have implemented " times new roman>  mso-bidi-font-family:" times new roman>a Brownian dynamic
simulation to study the motion of a Janus particle near a wall and under
different shear flow conditions  mso-bidi-font-family:" times new roman>while
further investigation  mso-bidi-font-family:" times new roman>will " times new roman>  mso-bidi-font-family:" times new roman>focus
on particle-particle interactions. The stochastic motion of a Janus
particle impacted by surface forces is described " times new roman>  mso-bidi-font-family:" times new roman>using the " times new roman>  mso-bidi-font-family:" times new roman>Langevin mso-bidi-font-family:" times new roman> equation. " times new roman>  mso-bidi-font-family:" times new roman>An adapted " times new roman>  mso-bidi-font-family:" times new roman>Kern-Frankel model is
employed to take into account the orientation of the particle. We observe
that 14.0pt;mso-bidi-font-family:" times new roman>  mso-bidi-font-family:" times new roman>interactions arising
through surface potentials depend on the separation distance between the
particle and the surface and the properties of the surfaces.