About the Authors

Renyun Zhang

renyun.zhang@miun.se

Affiliation Department of Natural Sciences, Engineering and Mathematics, Mid Sweden University, Sundsvall, Sweden

Magnus Hummelgård

Affiliation Department of Natural Sciences, Engineering and Mathematics, Mid Sweden University, Sundsvall, Sweden

Håkan Olin

Affiliation Department of Natural Sciences, Engineering and Mathematics, Mid Sweden University, Sundsvall, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RYZ HO. Performed the experiments: RYZ. Analyzed the data: RYZ MH HO. Wrote the paper: RYZ HO.