Berlin 2024 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

DY: Fachverband Dynamik und Statistische Physik

DY 48: Granular Matter and Contact Dynamics

DY 48.1: Talk

Thursday, March 21, 2024, 15:00–15:15, BH-N 128

Columnar Structures of Spheres: Fundamentals and Applications — •Jens Winkelmann¹ and Ho-Kei Chan² — ¹Trinity College Dublin, Dublin, Ireland — ²Harbin Institute of Technology, Shenzhen, China

Columnar structures, many of which are helical, refer to dense cylindrical packings of particles. They are ubiquitous; for example, they exist in the contexts of botany, foams, and nanoscience. There have been in-depth investigations of columnar structures of both hard spheres (e.g., ball bearings) and soft spheres (e.g., wet foams), through computer simulations, analytic derivations, or simple experiments. In this talk, I will present you an overview of the fundamentals and applications of such structures, based on our recently published book on this subject. I will review some of the theoretical and experimental methods employed to assemble such structures, and then discuss some of the latest findings related to the structural transitions and hysteretic behaviour of such systems.

Keywords: helical structures; dense cylindrical packings; hysteresis; structural transition; hard and soft spheres