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The equivalent medium of cellular substrate under large stretching, with applications to stretchable electronics
- The equivalent medium of cellular substrate under large stretching, with applications to stretchable electronics
- Chen, Hang; Zhu, Feng; Jang, Kyung-In; Feng, Xue; Rogers, John A.; Zhang, Yihui; Huang, Yonggang; Ma, Yinji
- DGIST Authors
- Jang, Kyung-In
- Issue Date
- Journal of the Mechanics and Physics of Solids, 120, 199-207
- Article Type
- Equivalent medium for cellular materials; Constitutive model under finite deformation; Stretchable electronics; Elastic stretchability; METAL INTERCONNECTS; BALLOON CATHETERS; DESIGN; SILICON; SOLIDS; CAPABILITIES; DEFORMATION; ABLATION; BEHAVIOR; SENSORS
- The concepts of open, cellular substrates for stretchable electronic systems are of interest partly due to their ability to minimize disruptions to the natural diffusive or convective flow of bio-fluids in advanced, bio-integrated implants. The overall elastic properties, and in particular the stretchability, of such systems are difficult to determine, however, because they depend strongly on the alignment and position of the serpentine interconnects relative to the openings in the cellular substrate, which is difficult to precisely control, even with the assistance of precision stages and visualization hardware. This paper establishes an analytic constitutive model for an equivalent medium for a cellular substrate under finite deformation. Results demonstrate that the elastic stretchability of a serpentine interconnect bonded to this equivalent medium represents a lower-bound estimate for the case of the actual cellular substrate, where the bonding adopts different alignments and positions. This finding provides a simple, conservative estimate of stretchability, which has general utility as an engineering design rule for platforms that exploit cellular substrates in stretchable electronics. (C) 2017 Elsevier Ltd. All rights reserved.
- Elsevier Ltd
- Related Researcher
Bio-integrated Electronics Lab
Extreme mechanics; Stand-alone electronics; Heterogeneous materials; Biocompatible interfaces
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- Department of Robotics EngineeringBio-integrated Electronics Lab1. Journal Articles
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