Mechanical Designs for Inorganic Stretchable Circuits in Soft Electronics.
Mechanical concepts and designs in inorganic circuits for different levels of stretchability are reviewed in this paper, through discussions of the underlying mechanics and material theories, fabrication procedures for the constituent microscale/nanoscale devices, and experimental characterization. All of the designs reported here adopt heterogeneous structures ofrigidandbrittleinorganic materials onsoftandelasticelastomeric substrates, with mechanical design layouts that isolate large deformations to the elastomer, thereby avoiding potentially destructive plastic strains in the brittle materials. The overall stiffnesses of the electronics, their stretchability, and curvilinear shapes can be designed to match the mechanical properties of biological tissues. The result is a class of soft stretchable electronic systems that are compatible with traditional high-performance inorganic semiconductor technologies. These systems afford promising options for applications in portable biomedical and health-monitoring devices. Mechanics theories and modeling play a key role in understanding the underlining physics and optimization of these systems.
School of Mechanical and Aerospace Engineering, Oklahoma State University, Stillwater, OK 74078 USA.
Shuodao
S
Wang
Department of Civil and Environmental Engineering, and Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208 USA.
Yonggang
Y
Huang
Frederick Seitz Materials Research Laboratory, Department of Materials Science and Engineering, Department of Electrical and Computer Engineering, and the Department of Chemistry, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Champaign, IL 61820 USA.
John A
JA
Rogers
Biomimicking electronics; buckling; inorganic semiconductor; stretchable electronics
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