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In situMeasurement of the Adhesion Strength and Effective Elastic Stiffness of Single Soft Micropillar
- Source :
- The Journal of Adhesion. 91:369-380
- Publication Year :
- 2014
- Publisher :
- Informa UK Limited, 2014.
-
Abstract
- We report the deformation behavior and mechanical properties of a polymeric micropillar, which measures approximately 10 μm by 30 μm in size by measuring the loading/unloading response using an in situ force measurement system. When the single poly(dimethylsiloxane) (PDMS) micropillar was subjected to compression, we observed a periodic wrinkle and global (Euler) buckling at the sidewall. During unloading, we found the pull-off force (adhesion force) to increase for higher values of preloading and also for lower loading/unloading rates. From the slope of the load–displacement curves measured in situ, we calculated the effective elastic stiffness of the PDMS micropillar to be about 2.03 MPa. In addition to the current work, we report that this method can be used more broadly for in situ measurement of the intrinsic mechanical and adhesion properties of polymers and other relatively soft materials.
- Subjects :
- chemistry.chemical_classification
Materials science
technology, industry, and agriculture
Stiffness
Surfaces and Interfaces
General Chemistry
Polymer
Dynamic mechanical analysis
Adhesion
Compression (physics)
Surfaces, Coatings and Films
chemistry
Buckling
Mechanics of Materials
Microscopy
Materials Chemistry
medicine
Deformation (engineering)
Composite material
medicine.symptom
Subjects
Details
- ISSN :
- 15455823 and 00218464
- Volume :
- 91
- Database :
- OpenAIRE
- Journal :
- The Journal of Adhesion
- Accession number :
- edsair.doi...........10f8b21b226ee980b270983f38fb077a