2026 CAP Congress / Congrès de l'ACP 2026

Session

(DCMMP) M2-4 Soft Matter 2: Rheology and Colloids | Matière molle 2 : Rhéologie et colloïdes (DPMCM)

M2-4

22 Jun 2026, 14:15

U. Ottawa - Learning Crossroads (CRX) Building

814. Physical Properties of Dextran Solutions as Model Crowding Media

Anand Yethiraj (University of Guelph)

22/06/2026, 14:15

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

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

The role of macromolecular excluded-volume effects in living systems (``macromolecular crowding'') is widely appreciated, but model crowders used in these studies are inadequately characterized. In this work, we examine viscosity, polymer self-diffusion and water diffusion in solutions crowded by dextran polymer of three different molecular weights. Solution viscosity and the reduced dextran...

720. Electrically-driven Microscale Turbulence

Majid Bahraminasr (Memorial University of Newfoundland)

22/06/2026, 14:30

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

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

Electrohydrodynamic flows in emulsions provide a controllable setting for studying driven non-equilibrium systems. In this work, we introduce an oil-in-oil emulsion that enables systematic control of EHD behavior by tuning the electrical conductivity of the continuous phase while maintaining nearly constant viscosity and dielectric contrast. At low electric fields, droplet deformations are...

893. Competition Between Electrostatics and Hydrophobicity in the Rheology of Modified Phytoglycogen Nanoparticles

Ricky Summerlin (University of Guelph)

22/06/2026, 14:45

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

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

Phytoglycogen (PG) is a highly branched biopolymer that occurs naturally as compact, soft, hydrated and hairy nanoparticles with an underlying dendritic architecture. Collectively, these properties make PG a unique soft colloidal nanoparticle for fundamental studies that is also desirable for personal care, nutrition, and biomedical applications. The functionality of PG can be modified through...

718. Kinetics of structure formation in colloids with controllable electrostatic and depletion interactions and toggled dipolar interactions

Ashish Joy (University of Guelph)

22/06/2026, 15:00

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)

Simulations by Sherman et al. (2016) [1] demonstrated that time-dependent, periodically toggled interparticle attractions in nanoparticles can anneal disorder, enable escape from kinetically arrested states, and promote the formation of well-ordered crystalline domains. In our work, we investigate a similar out-of-equilibrium pathway to structure formation in a density- and...

938. Active Transport as a Mechanism of Microphase Selection in Biomolecular Condensates

Le Qiao (Johannes Gutenberg University of Mainz)

22/06/2026, 15:15

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

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

Cells control the size and organization of biomolecular condensates formed by liquid-liquid phase separation (LLPS), yet the underlying physical principles remain incompletely understood. We propose a transport-driven mechanism in which undirected motor-mediated motion along cytoskeletal filaments redistributes phase-separating components, generating an effective non-equilibrium long-range...