Hallac, FS orcid.org/0000-0001-6121-0608, Fragkopoulos, IS, Connell, SD et al. (1 more author) (2019) Micro-mechanical properties of single high aspect ratio crystals. CrystEngComm, 38. pp. 5738-5748. ISSN 1466-8033
Abstract
This work describes a new method to measure breakage strength and elastic modulus of single crystal cantilevers using atomic force microscopy. Crystal breakage is an important but poorly understood factor in mechanical processing of organic crystals. In this study, 300μm long beta glutamic acid, needle-shaped crystal cantilevers are bend and broken in an Atomic Force Microscope. We report the first directly measured distribution of breakage strength and Young’s modules of an organic crystal material. The distribution follows a Weibull distribution; 50% of the crystals break at less than 22.4MPa and have a Young’s modulus below 1.90GPa and we observed that stronger crystals are stiffer, and thicker crystals break easier. The data generated from the single crystal cantilever method provides fundamental material properties essential for understanding undesirable crystal fracture due to forces exerted on crystals in manufacturing processes such as crystallisation, filtration and drying.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2019. This is an author produced version of a paper published in CrystEngComm. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Breakage Strength; Youngís modulus; organic crystals; mechanical properties; Atomic Force Microscopy |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Aug 2019 10:53 |
Last Modified: | 05 Aug 2020 00:38 |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Identification Number: | 10.1039/C9CE00819E |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149357 |