Reconstructing the Three-Dimensional Structure of the Double Gyroid Polymeric Materials by Electron Tomography

Yi Ching Wu^1*, Ying Chen¹, Jhih Heng Yang¹, Huai Yu Cao¹, Chien Chun Chen¹

¹Department of Engineering and System Science, National Tsing Hua University, Hsinchu, Taiwan

* Presenter:Yi Ching Wu, email:luca7356288@gmail.com

In order to explore the fine structure of double gyroid polymers, Polymethylmethacrylate-Poly(2-vinylpyridine) (PMMA-P2VP), we obtained the projection of the stained specimen at different angles by scanning transmission electron microscopes (STEM). The obtained images were pre-processed by alignment and background signal filtering. By combining the Fourier transform and phase retrieval iteration, a three-dimensional structure was successfully obtained. The internal fine structure of the sample in high resolution is able to explore whether the sample has a crystal-like structure, and also has a large potential for fine-structure determination.

Keywords: Electron tomography, Scanning transmission electron microscopes, Three-dimensional structure