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Benchmarking mechanical properties of 3D printed elastomeric microstructures [data]

The characterization of mechanical properties in soft 3D printed materials at the microscale remains a significant challenge due to the lack of standardized methodologies. To address this issue, a microscale nanoindentation protocol for elastomeric 3D printed microstructures is developed, optimized,...

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Bibliographic Details
Main Authors: Eivgi, Or (Author) , Vázquez-Martel, Clara (Author) , Lukeš, Jaroslav (Author) , Blasco, Eva (Author)
Format: Database Research Data
Language:English
Published: Heidelberg Universität 2025-05-09
DOI:10.11588/DATA/4OZZTW
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Forschungsdaten
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Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.11588/DATA/4OZZTW
Verlag, kostenfrei, Volltext: https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/DATA/4OZZTW
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Author Notes:Or Eivgi, Clara Vazquez-Martel, Jaroslav Lukeš, Eva Blasco
Description
Summary:The characterization of mechanical properties in soft 3D printed materials at the microscale remains a significant challenge due to the lack of standardized methodologies. To address this issue, a microscale nanoindentation protocol for elastomeric 3D printed microstructures is developed, optimized, and benchmarked. Herein, a conospherical indenter tip (r = 10.26 µm), a modified trapezoidal displacement profile with lift-off segments to capture adhesion interactions, and the nano-Johnson-Kendall-Roberts model for data analysis are employed. The protocol is optimized and verified using four newly developed PDMS-based inks for two-photon 3D laser printing. The results are compared to a state-of-the-art literature protocol that uses a Berkovich tip and the Oliver-Pharr model. It is shown that adhesion forces play a significant role in mechanical properties overestimation, showing differences of up to 80% between the different protocols. This study highlights the importance of carefully selecting characterization protocol to yield comparable results between studies. By providing a standardized protocol, it paves the way for straightforward and accurate characterization of mechanical properties in soft 3D printed materials at the microscale.
Item Description:Gefördert durch: German Research Foundation (DFG): via the Excellence Cluster “3D Matter Made to Order” EXC-2082/1-390761711; Carl Zeiss Foundation: “Carl-Zeiss-Foundation-FocusHEiKA"
Gesehen am 27.05.2025
Physical Description:Online Resource
DOI:10.11588/DATA/4OZZTW

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