2018 CAP Congress / Congrès de l'ACP 2018

Session

W1-1 Pattern Formation and Statistical Mechanics of Non-Equilibrium Systems (DCMMP) | Formation de motif et mécanique statistique des systèmes hors d'équilibre (DPMCM)

W1-1

Jun 13, 2018, 8:00 AM

Dalhousie University

Conveners

W1-1 Pattern Formation and Statistical Mechanics of Non-Equilibrium Systems (DCMMP) | Formation de motif et mécanique statistique des systèmes hors d'équilibre (DPMCM)

• Stephen Morris (University of Toronto)

2025. Experimental and Computational Studies of 1D and 2D Chimera States in Populations of Coupled Chemical Oscillators (I)

Prof. Ken Showalter (West Virginia University, USA)

6/13/18, 8:00 AM

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Invited Speaker / Conférencier(ère) invité(e)

We have studied chimera and chimera-like states in populations of photochemically coupled Belousov-Zhabotinsky (BZ) oscillators. Simple chimeras and chimera states with multiple and traveling phase clusters, phase-slip behavior, and chimera-like states with phase waves are described. Simulations with a realistic model of the discrete BZ system of populations of homogeneous and heterogeneous...

2224. Icicle Ripples: examining a phase transition with impurities (G)*

John Ladan (University of Toronto)

6/13/18, 8:30 AM

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

Icicles are an ideal test-case for understanding the free-boundary shape of "wet" ice growth. Icicles observed in nature and the laboratory often exhibit ribs or ripples with a wavelength close to 1cm around their circumference. Previous experiments on laboratory-grown icicles have shown that the existence of these ripples depends on the presence of (very small) concentrations of impurities in...

2214. Critical failure can be tuned by material rheology: A model and a case study.

Jordi Baro Urbea (University of Calgary)

6/13/18, 8:45 AM

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Oral (Non-Student) / Orale (non-étudiant(e))

The total energy of acoustic emission (AE) events in externally stressed materials diverges when approaching macroscopic failure. Avalanche models explain this accelerated seismic release (ASR) as the approach to a critical point that coincides with ultimate failure. However, not all empirical mechanical processes are critical at failure. As a case study, we show how the soft uniaxial...

2316. *** Withdrawn*** Nonlocal models in pattern formation (I)

Prof. Theodore Kolokolnikov (Dalhousie)

6/13/18, 9:00 AM

Invited Speaker / Conférencier(ère) invité(e)

abstract: In the first part of the talk, I will discuss a new agent-based model of wealth distribution in a society which incorporates spatial information. The key feature of the model is formation of wealth "hot-spots", region in space where wealth is concentrated. The continuum limit of this model leads an interesting integral equation.

In the second part of the talk, I discuss how a...

2377. Shinning light on surface reactions: Real Time Imaging and Control of Catalytic Reactions

Harm Rotermund (Dalhousie University)

6/13/18, 9:00 AM

2118. Effect of cross-linking on the size-distribution of collagen fibrils (G)*

Samuel Cameron (Dalhousie)

6/13/18, 9:30 AM

Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

We have shown that collagen fibrils have a preferred equilibrium fibril radius. However, the radial distribution of fibrils in tissues is typically polydisperse. Tendon fibrils in particular can exhibit a bimodal distribution of radii within the same tissue. This suggests non-equilibrium effects are important in fibril formation. To investigate these effects, we applied 2d coarsening dynamics...