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Mechanics of stretchable electronics on balloon catheter under extreme deformation

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Title
Mechanics of stretchable electronics on balloon catheter under extreme deformation
Author(s)
Yewang Su; Zhuangjian Liu; Shuodao Wang; Roozbeh Ghaffari; Dae-Hyeong Kim; Keh-Chih Hwang; John A. Rogers; Yonggang Huang
Publication Date
2014-01
Journal
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, v.51, no.7-8, pp.1555 - 1561
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Abstract
Stretchable electronics has been applied to balloon catheters for high-efficacy ablation, with tactile sensing integrated on the surface, to establish full and conformal contact with the endocardial surface for elimination of the heart sink caused by blood flow around their surfaces. The balloon of the catheter folds into uniform ‘clover’ patterns driven by the pressure mismatch inside (vacuum) and outside of the balloon (pressure 1 atm). The balloon catheter, on which microelectrodes and interconnects are printed, undergoes extreme mechanical deformation during its inflation and deflation. An analytic solution is obtained for balloon catheter inflation and deflation, which gives analytically the distribution of curvatures and the maximum strain in the microelectrodes and interconnects. The analytic solution is validated by the finite element analysis. It also accounts for the effect of inflated radius, and is very useful to the optimal design of balloon catheter.
URI
https://pr.ibs.re.kr/handle/8788114/1146
ISSN
0020-7683
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
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