Abstract
The use of cellular elastomer substrates not only reduces its restriction on natural diffusion or convection of biofluids in the realm of stretchable electronics but also enhances the stretchability of the electronic systems. An analytical model of "zigzag"cellular substrates under finite deformation is established and validated in this paper. The deformed shape, nonlinear stress-strain curve, and Poisson's ratio-strain curve of the cellular elastomer substrate calculated using the reported analytical model agree well with those from finite element analysis (FEA). Results show that lower restriction on the natural motion of human skin could be achieved by the proposed zigzag cellular substrates compared with the previously reported hexagonal cellular substrates, manifesting another leap toward mechanically "invisible"wearable, stretchable electronic systems.
| Original language | English (US) |
|---|---|
| Article number | 061006 |
| Journal | Journal of Applied Mechanics, Transactions ASME |
| Volume | 87 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2020 |
Funding
The authors gratefully acknowledge the support from the National Natural Science Foundation of China under Grant Nos. 11972059 and 11572023. Y. H. acknowledges the support from the National Science Foundation, USA (Grant No. CMMI1635443).
Keywords
- Cellular materials
- Elasticity
- Finite deformation
- Stress-strain curve
- Stretchable electronics
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering