Mechanics of tunable hemispherical electronic eye camera systems that combine rigid device elements with soft elastomers

Chaofeng Lu, Ming Li, Jianliang Xiao*, Inhwa Jung, Jian Wu, Yonggang Huang, Keh Chih Hwang, John A. Rogers

*Corresponding author for this work

Research output: Contribution to journalArticle

32 Scopus citations


A tunable hemispherical imaging system with zoom capability was recently developed by exploiting heterogeneous integration of rigid silicon photodetectors on soft, elastomeric supports, in designs that can facilitate tunable curvature for both the lens and detector. This paper reports analytical mechanics models for the soft materials aspects of the tunable lenses and detector surfaces used in such devices. The results provide analytical expressions for the strain distributions, apex heights and detector positions, and have been validated by the experiments and finite element analysis. More broadly, they represent important design tools for advanced cameras that combine hard and soft materials into nonplanar layouts with adjustable geometries.

Original languageEnglish (US)
Article number061022
JournalJournal of Applied Mechanics, Transactions ASME
Issue number6
StatePublished - Nov 11 2013



  • Analytical solution
  • Finite strain
  • Hyperelastic material
  • Pressuredeflection relation
  • Tunable electronic eye camera

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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