Wavy semiconductor nanomaterials for stretchable electronics

PMSE 145

John A. Rogers, jrogers@uiuc.edu, Department of Materials Science and Engineering, University of Illinois, Urbana-Champaign, 1304 W. Green Street, Urbana, IL 61801
This talk will describe the synthesis and physics of semiconductor nanomaterials -- inorganic ribbons/membranes and single walled carbon nanotubes – that are structured into ‘wavy' geometries via controlled mechanically nonlinear buckling instabilities. Experimental measurements on various systems of this general type, together with analytical and finite element modeling of their responses, reveal the essential physics and materials aspects. Use of these ‘wavy' semiconductors in high performance field effect transistors, pn junction and Schottky diodes and full integrated circuits on elastomeric supports illustrates pathways to electronic systems that offer full stretchability, with purely elastic responses to applied strains of up to ~100%. Hemispherical electronic eye imagers, conformable sensor skins and other devices that rely on this type of approach will be discussed.