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

• Verfasst von: Eivgi, Or [VerfasserIn]
• Verfasst von: Vázquez-Martel, Clara [VerfasserIn]
• Verfasst von: Lukeš, Jaroslav [VerfasserIn]
• Verfasst von: Blasco, Eva [VerfasserIn]
• Titel: Benchmarking mechanical properties of 3D printed elastomeric microstructures [data]
• Verf.angabe: Or Eivgi, Clara Vazquez-Martel, Jaroslav Lukeš, Eva Blasco
• Verlagsort: Heidelberg
• Verlag: Universität
• E-Jahr: 2025
• Jahr: 2025-05-09
• Umfang: 1 Online-Ressource (4 Files)
• Fussnoten: 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
• DOI: doi:10.11588/DATA/4OZZTW
• Datenträger: Online-Ressource
• Dokumenttyp: Forschungsdaten
• Dokumenttyp: Datenbank
• Sprache: eng
• Sonstige Nr.: Grant number: EXC-2082/1-390761711
• Sach-SW: Chemistry
• K10plus-PPN: 1926676068
• K10plus-PPN:
  Universitätsbibliothek
• Lokale URL UB: Zum Volltext

Abstract

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.