Defense of thesis June 4th: Eivind Bering

Defense of thesis June 4th: Eivind Bering – Faculty of Natural Sciences



Eivind Bering has submitted the following academic thesis as part of the doctoral work at the Norwegian University of Science and Technology (NTNU):

“Stretching, breaking, and dissolution of polymeric nanofibres by computer experiments”

Assessment Committee

The Faculty of Natural Sciences has appointed the following Assessment Committee to assess the thesis:

1st opponent: Professor Daan Frenkel, Department of Chemistry, Cambridge University, UK

2nd opponent: Professor Ferenc Kun, Department of Theoretical Physics, University of Debrecen, Hungary

3rd opponent: Professor Randi Holmestad, Department of Physics, NTNU

Professor Randi Holmestad has been appointed Administrator of the Committee. The Committee recommends that the thesis is worthy of being publicly defended for the PhD degree. 


The doctoral work has been carried out at the Department of Physics, where Professor Alex Hansen has been the candidate’s supervisor. Associate Professor Astrid Silvia de Wijn, department of Mechanical and Industrial Engineering, Faculty of Engineering has been the candidate’s co-supervisor. 

Public trial lecture:

Time: 4th June at 10:15

Place: Disputas rommet, Main building, NTNU Gløshaugen


Meeting ID: 428 695 3193

Prescribed subject: “What makes a good glue? Theories behind and practical examples”

Public defence of the thesis:

Time: 4th June at 13:15

Place: Disputas rommet, Main building, NTNU Gløshaugen


Meeting ID: 428 695 3193

Summary of thesis:

Bundles of polymeric materials are ubiquitous and play essential roles in biological systems, and often display remarkable mechanical properties. With the never-ending experimental advances in control and manipulation of molecular properties on the nanometric level follows an increasing demand for a theoretical description that is valid at this scale. This regime of nano-scale bundles of small numbers of molecules has not been investigated much theoretically; here chain–chain interactions, surface effects, entropy, nonlinearities, and thermal fluctuations all play important roles.

In my thesis, I present a broad exploration by molecular-dynamics simulations of single chains and bundles under external loading. Stretching and rearrangements of chains are investigated, as well as their breaking and dissolution.