Size Effect in the Compression of 3D Polymerized Micro-Structures

Jiayu Li, Angelo Accardo, Shutian Liu*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

26 Downloads (Pure)

Abstract

Micro/nanoscale additive manufacturing provides a powerful tool for advanced materials and structures with complex and precise features. For instance, the feature resolution of two-photon polymerization (2PP) can reach 200 nm. At this scale, materials properties can change, and the influence of the size effect cannot be ignored. Therefore, it is necessary to assess changes in the material mechanical properties considering size effects. In this work, several micrometric polymeric specimens are printed via 2PP, and their mechanical properties are assessed using compression tests. Detailed printing and testing procedures and the effects of parameter settings are provided. The experimental results show that the changes in the microstructures size have a direct effect on Young s modulus. In particular, a large surface-volume ratio results in a higher Young s modulus. In other words, the smaller the structure size, the higher the stiffness. The reported findings play a significant role in the development of fabrication strategies for polymeric microstructures where high stiffness accuracy is fundamental.

Original languageEnglish
Article number011002
Number of pages7
JournalJournal of Applied Mechanics, Transactions ASME
Volume91
Issue number1
DOIs
Publication statusPublished - 2024

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • mechanical properties of materials
  • micro/nanoscale additive manufacturing
  • Size effect
  • two-photon polymerization resin
  • Young s modulus

Fingerprint

Dive into the research topics of 'Size Effect in the Compression of 3D Polymerized Micro-Structures'. Together they form a unique fingerprint.

Cite this