PhD Confirmation Seminar

11:00 am — 1:00 pm

Wednesday, 11th Dec 2019

VG02, Mathematics Building


Kyle Stevens

(CARMA, The University of Newcastle)

Continuum Modelling of Carbon Materials for Energy Applications

The production of intricate structures at the nanoscale has gone from fantasy to reality in just a few decades. This rapid speed of development in experimental techniques has left a large gap for mathematicians to fi􏰀ll, whether by optimising existing methods or developing predictive tools to lower to cost (both time and money) of experimentation and fabrication. In this seminar I will begin with a background and review including discussing carbon materials and polycyclic aromatic hydrocarbons and their uses; the Lennard-Jones potential and its use as an interatomic potential function to model van der Waals forces and why this potential is relevant to carbon materials; the continuum approximation of the Lennard-Jones potential and its usefulness when modelling intermolecular potentials and lastly an overview of molecular dynamics simulations.

I will then present my preliminary results which begins with a motivating problem of modelling a stack of coronene molecules encapsulated within a single walled carbon nanotube. I will then discuss how we model the system through picking appropriate surfaces and then solving integrals derived from the smaller coronene-coronene and coronene-nanotube interactions, which we then use to build up an analytic expression for the entire system.

Next I will consider the research I will undergo in the near future which includes investigating nonconstant attractive and repulsive coefficients within the Lennard-Jones potential, analysing carbon nanomaterials and other nanostructures use for gas storage, and brie􏰁fly touch on modelling carbon capture.

Lastly I will go over my research plan including manuscripts I have submitted and aim to submit, conferences and events I have attended and will attend in the coming year, and fi􏰀nally a rough timeframe for the completion of my thesis.