Collapse of liquid-overfilled strain-isolation substrates in wearable electronics Academic Article

abstract

• 2017 Elsevier Ltd Liquid that resides in a soft elastomer embedded between wearable electronics and biological tissue provides a strain-isolation effect, which enhances the wearability of the electronics. One potential drawback of this design is vulnerability to structural instability, e.g., roof collapse may lead to partial closure of the liquid-filled cavities. This issue is addressed here by overfilling liquid in the cavities to prevent roof collapse. Axisymmetric models of the roof collapse are developed to establish the scaling laws for liquid-overfilled cavities, as well as for air- and liquid-filled ones. It is established that the liquid-overfilled cavities are most effective to prevent roof collapse as compared to air- and liquid-filled ones.

authors

• Pharr, Matt

published proceedings

• INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

author list (cited authors)

• Wang, X., Ma, Y., Xue, Y., Luan, H., Pharr, M., Feng, X., Rogers, J. A., & Huang, Y.

citation count

• 14

complete list of authors

• Wang, Xiufeng||Ma, Yinji||Xue, Yeguang||Luan, Haiwen||Pharr, Matt||Feng, Xue||Rogers, John A||Huang, Yonggang

publication date

• January 2017

publisher

• Elsevier  Publisher

published in

• International Journal of Solids and Structures  Journal

keywords

• Air-filled
• Liquid-filled
• Liquid-overfilled Cavities
• Roof Collapse
• Strain Isolation
• Wearable Electronics

Digital Object Identifier (DOI)

• 10.1016/j.ijsolstr.2017.03.031

start page

• 137

end page

• 142

volume

• 117

URL

• http://dx.doi.org/10.1016/j.ijsolstr.2017.03.031