Distinct Roles of Tensile and Compressive Stresses in Graphitizing and Properties of Carbon Nanofibers.

ABSTRACT: It is generally accepted that inducing molecular alignment in a polymer precursor via mechanical stresses influences its graphitization during pyrolysis. However, our understanding of how variations of the imposed mechanics can influence pyrolytic carbon microstructure and functionality is inadequate. Developing such insight is consequential for different aspects of carbon MEMS manufacturing and applicability, as pyrolytic carbons are the main building blocks of MEMS devices. Herein, we study the outcomes of contrasting routes of stress-induced graphitization by providing a comparative analysis of the effects of compressive stress versus standard tensile treatment of PAN-based carbon precursors. The results of different materials characterizations (including scanning electron microscopy, R

SUBMITTER: Liu Y 

PROVIDER: S-EPMC8466282 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature