Timothy Andrew Sipkens

Postdoctoral Fellow


Timothy's research is aimed at developing novel approaches to characterize soot morphology, focusing on the inversion techniques used to interpret tandem centrifugal partial mass analyzer (CPMA) and differential mobility analyzer (DMA) measurements. Simultaneous use of these devices allows one not only to distinguish between different populations of particles but also to determine how the properties of the particles are distributed in the aerosol as a whole. His research will consider Bayesian treatments of the problem, which have the capacity to greatly improve reconstructions of particle characteristics. Applications range from characterization of aerosol-based nanomaterials to quantification of particulate pollution in flares, engines, and lab-scale flames. 

Timothy is also working on applications of transmission electron microscopy of nanoparticle aggregates and Schlieren imaging. 

Timothy received his master’s and doctoral degrees in Mechanical Engineering from the University of Waterloo in 2014 and 2018, respectively. His graduate work with Dr. Kyle Daun examined various facets of the laser-induced incandescence (LII) technique, including its extension from soot to characterize engineered nanoparticles, such as silicon, iron, and molybdenum nanoparticles; detailed investigations of nanoscale cooling mechanisms using molecular dynamics (MD); and Bayesian treatments of the analysis.



Research Classification

Atmospheric Pollutants
Energy Networks and Distribution
Fossil Fuels

Research Interests

Aerosol Science
Nanoparticle Characterization
Bayesian Methods
Data Inversion
Time-resolved laser-induced incandescence
Transmission electron micropscopy

Research Methodology

Mobility Analysis
Bayesian Data Inversion
Light Scattering
Laser-induced Incandescence
Tandem Mass-Mobility Measurements

Research Centres, Clusters, Institutes




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