Large scale, dense arrays of plasmonic nanodisks (Au) on low modulus, high elongation elastomeric substrates (PDMS) represent a class of tunable optical system, with reversible ability to shift plasmon resonances, originating from array deformation, over a range of nearly 600nm in the visible region. At the most extreme levels of mechanical deformation (strains <100%), non-linear buckling processes transform initially planar arrays into three dimensional configurations, in which the nanodisks rotate out of the plane, giving rise to an increase of transition rate, to form linear arrays with ‘wavy’ geometries. Analytical and finite element models capture not only the physics of these buckling processes, including all of distinct modes that occur, but also the quantitative effects of these deformations on the plasmonic responses. The results have relevance to mechanically tunable optical systems, with potential relevance to soft optical sensors that integrate on or in the human body.
Hui Zhang, Li Gao, Yihui Zhang, Xu Xie, Sage Doshay, Hui Fang, Jonathan A. Fan, Peter Nordlander, Yonggang Huang, John A. Rogers, Shad Deesha, and Siyi Xu, "Optics and nonlinear buckling mechanics in large-area, highly stretchable arrays of plasmonic nanostructures (Presentation Recording)," Proc. SPIE 9547, Plasmonics: Metallic Nanostructures and Their Optical Properties XIII, 95472B (Presented at SPIE Nanoscience + Engineering: August 13, 2015; Published: 1 October 2015); https://doi.org/10.1117/12.2188556.4519370447001.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for most presentations.
Search our growing collection of more than 29,500 conference presentations, including many plenaries and keynotes.