Post-Doctoral Fellow

IEEE Member (1998)

SPIE Member (2004)

Mailing Address
National Research Council of Canada
Room 2083
100 Sussex Drive
Ottawa, Ontario, Canada
K1A 0R6

Other Contact Info
Phone: 613-998-4840
Fax: 613-991-3437
E-Mail: <first.last> <at> nrc-cnrc.gc.ca

Update on Current Activities:

Working as a post-doctoral fellow with Dr. Paul Corkum at the University of Ottawa/NRC in the Attosecond Science Group.

My first post-doctoral work was with Dr. Ian Mann in the Department of Physics at the University of Alberta on construction of a high-energy proton telescope (HEPT) to be launched on the ORBITALS satellite in 2010-2012. See the Orbitals Website for more details.

Brief Synopsis of Ph.D. Research:

My main project was with the Laser Plasma Interaction Group under the supervision of both Dr. Robert Fedosejevs and Dr. Ying Y. Tsui. The goal was to remove single nanometer scale thicknesses on a copper surface in the focal region of a femtosecond near-infrared laser. The process of nanomilling involved exploiting the incubation phenomenon established in nanosecond machining of metal surfaces and recently seen in all femtosecond multiple-shot laser ablation experiments with metal, semiconductor and dielectric surfaces.

One-dimensional two-temperature modeling of metal surfaces was done to visualize the macroscopic temperature dynamics of the electron and lattice subsystem to determine whether melting was occuring within the substrate during nanomilling. This was important since we need to understand the internal mechanisms leading to the removal of surface layers. To visualize microscopic effects of a femtosecond laser on a material surface, an avalanche ionization mechanism was added to our Molecular Dynamics model of silicon to increase its accuracy and is the next step before using the code to model a metal substrate.

I was involved in a side-project with Dr. Alidad Amirfazli in the Department of Mechanical Engineering with Dr. M. Reza Shadnam in the direct writing of molecular monolayer channels. The first phase of the project used an Argon CW laser to remove hydrophobic monolayers from an ultra-thin gold film on glass slide, and replacing the scanned zones with a hydrophilic monolayer has been completed. Extending the project to the femtosecond pulse regime showed that nanomilling was responsible for pattening and could achieve sub-diffraction limited (100's of nanometer) line widths.