Date of Award

2023

Document Type

Thesis

Degree Name

Master of Science in Engineering (MSE)

Department

Chemical and Materials Engineering

Committee Chair

Isaac Torres-Díaz

Committee Member

Anuradha Subramanian

Committee Member

Agnieszka Truszkowska

Committee Member

Jeffrey Weimer

Subject(s)

Colloids, Surfaces (Technology), Adhesion, Biomimicry

Abstract

Synthetic spiky colloids are attractive for different technologies, but quantifying the effect of orientation on the particle-surface interactions is still lacking and hinders the use of spiky colloids in different applications. This thesis tackles one of the main challenges in colloid science and engineering to describe the electrostatic and van der Waals interaction energies of a dilute suspension of spiky anisotropic colloids with a planar wall. The model reported here quantifies the DLVO interactions of a spiky particle with a planar wall, extending the surface element integration method and including the effects of particle position and orientation. The effect of spike distribution, spike aspect ratio, particle-wall distance and orientation on the interaction energy, force, and rolling torque are also analyzed. Results show that the DLVO interaction energy and force have a topological correlation with the tessellated orientational space of the spiky particle and a dual effect in adhesion energy.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.