Ryan HoganUniversity of Ottawa · Department of Physics
Ryan Hogan
Doctor of Physics
About
3
Publications
315
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1
Citation
Citations since 2017
Introduction
Ryan Hogan completed a Master’s Degree at l’Université de Moncton publishing work titled "Optical Measurement of phase transition induced by friction." He is now working towards his PhD candidacy at University of Ottawa.
He is currently studying Nonlinear response of thin films and nanocomposites at epsilon-near-zero conditions. This work is under the supervision of Robert Boyd.
Skills and Expertise
Additional affiliations
September 2018 - present
Education
September 2018 - December 2022
September 2016 - August 2018
September 2012 - May 2016
Publications
Publications (3)
Light propagating in a moving medium with refractive index other than unity is subject to light drag. While the light drag effect due to the linear refractive index is often negligibly small, it can be enhanced in materials with a large group index. Here we show that the nonlinear refractive index can also play a crucial role in propagation of ligh...
Optical effects are measured during the phase transition of vanadium dioxide (VO2) exposed to friction, thereby opening new possibilities for friction measurements and detection. Exposure to periodic cycles of kinetic friction yield measurable, repeatable and reversible changes in optical properties of the films. Changes in reflectance are detected...
Network
Projects
Projects (2)
Using multilayer stacks properties to control non-local phase to achieve spatial compression. (e.g. turning 100 mm of propagation to 10 mm)
An alternate way to induce the phase transition in VO2. Reflection as a function of time is monitored where the friction is applied periodically. Rotational friction is applied creating heat and the spinning is turned off for relaxation of the film.
