2025 CAP Congress / Congrès de l'ACP 2025

Session

(DPMB/DCMMP) W2-1 Instabilities in Motion: Metastability, Mechanics, and Molecular Transitions | Instabilités en mouvement : métastabilité, mécanique et transitions moléculaires (DPMB/DPMCM)

W2-1

11 Jun 2025, 14:15

Conveners

(DPMB/DCMMP) W2-1 Instabilities in Motion: Metastability, Mechanics, and Molecular Transitions | Instabilités en mouvement : métastabilité, mécanique et transitions moléculaires (DPMB/DPMCM)

• Greg van Anders (Queen's University)
• Maria Kilfoil (University of Prince Edward Island / Physics)

Description

Soft Condensed Matter and Biological Physics (DPMB/DCMMP) – This symposium will highlight major foci for researchers at the interface between soft matter and biological physics. Topics will include biopolymers in confined environments, super-biomolecular assemblies, active soft matter, energy fluxes, budgets, and constraints in cells. Join us later at a networking gathering to discuss the exciting developments from the day’s presentations.

360. Single-molecule analysis of collagen’s metastability

Nancy Forde

11/06/2025, 14:15

Symposia Day (DPMB/DCMMP - DPMB/DPMCM) Soft Condensed Matter and Biological Physics / Matière condensée molle et physique biologique

Invited Speaker / Conférencier(ère) invité(e)

Collagen has been evolutionarily selected as the preferred building block of extracellular structures, where it constitutes approximately 20% of the body’s protein mass. Despite the inherent and surprising thermodynamic instability of individual proteins at body temperature, collagen manages to assemble into higher-order structures that provide mechanical support to tissues. We have been...

99. Hallmark of a liquid-liquid transition in supercooled water nanodroplets

Shahrazad Malek (University of the Fraser Valley)

11/06/2025, 14:45

Symposia Day (DPMB/DCMMP - DPMB/DPMCM) Soft Condensed Matter and Biological Physics / Matière condensée molle et physique biologique

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

Since the introduction of the liquid-liquid critical point (LLCP) hypothesis in 1992 to explain the anomalous properties of liquid water, numerous studies have been conducted to validate it. However, the LLCP’s occurrence at extremely supercooled temperatures and high pressures makes investigating the LLCP, and the associated liquid-liquid phase transition (LLPT) between a low-density liquid...

356. Mechanically informed identification of shear instabilities in disordered covalent network glass

Somar Shekh Alshabab (RWTH Aachen, Chair and Institute of General Mechanics)

11/06/2025, 15:00

Symposia Day (DPMB/DCMMP - DPMB/DPMCM) Soft Condensed Matter and Biological Physics / Matière condensée molle et physique biologique

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle)

The mechanical behavior of oxide glasses is governed by their disordered covalent networks. Using a local mechanical probing technique, we show that regions with low local stress thresholds correlate strongly with soft spots in two-dimensional network glass samples. Despite its accuracy, this approach is computationally intensive, requiring mechanical simulations at each atomic site. To...

202. Mucosal rheology in disease transmission

Caroline Wagner (Dept. of Bioengineering, McGill University)

11/06/2025, 15:15

Symposia Day (DPMB/DCMMP - DPMB/DPMCM) Soft Condensed Matter and Biological Physics / Matière condensée molle et physique biologique

Invited Speaker / Conférencier(ère) invité(e)

The biological complex fluid mucus plays a key role in the transmission of infectious diseases. In-host, mucus serves as a physical and biochemical barrier, excluding pathogens from reaching underlying susceptible cells. Externally, mucosalivary droplets transport pathogens between hosts, and transmission probability is intimately tied to the processes of aerosolization and virus stability in...