Condensed Matter National Laboratory

Rheology as the toolbox for determining the processability of 2D materials


(Internal): Seyed Mohammad Reza Taheri
(External): Ali Sanjari (Jetco Co.)
Mohsen Moazzami Gudarzi (University of Manchester), Alexandara Satalov (Leibniz University)

Funded by

Swiss National Science Foundation (P400P2_186747 & 174952), Iran Science Elites Federation (11/66332) and international affairs and technological exchange centre of vice presidency for science and technology (99/200/4419)

Published Papers

1- Correlation of interfacial dilational rheology and processing of 2D Materials liquid crystals: A case-study of graphene oxide liquid crystal phases, Iranian Journal of Physics Research 20 (3), 515-524, 2020

2- Mechanical properties of graphene oxide: the impact of functional groups, Applied Surface Science, 525, 146554, 2020

3- Superflexibility of Graphene Oxide, PNAS, 2016, 113 (40), 11088-11093

4- Processable 2D materials beyond graphene: MoS2 liquid crystals and fibers, Nanoscale 2016, 8 (38), 16862-16867
5- Graphene oxide dispersions: tuning rheology to enable fabrication, Materials Horizons, 2014. 1 (3): p.326-331

6- Formation and processability of liquid crystalline dispersions of graphene oxide. Materials Horizons, 2014. 1(1): p. 87-91

Summary in English and Photo

Understanding the flow behavior of the mushrooming family of solution processed 2D macromolecule membranes serves as the key to large-scale processing and integration of these materials into already existing and accessible additive manufacturing routes for device fabrication. This knowledge, if accrued, can help us assess the feasibility of different processing routes based on the unique and enhanced physical properties of 2D materials of choice serving as an enabling platform to put the versatile properties of these atomically thin membranes into practical device applications. To this end, although many attempts have been made to provide technical guidelines for the processability of 2D materials, still there are many conflicting and even contradictory reports on the rheological behavior and conformational stability of 2D membranes. One critical and perhaps the most pressing issue here is the choice of the correct universal tool to extract the information needed to construct the rheological guideline with a clear physical meaning. Addressing this challenge then can help us construe and decipher the flow behavior of these technologically transformative materials using standardized procedures. Applying this understanding to processing routes can help us fabricate practical next-generation integrated devices spanning industrial, optoelectronics, energy storage and harvesting, and biomedical applications.



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