C 2015 American Chemical Society Template-Stripped Tunable Plasmonic Devices on Stretchable and Rollable Substrates

etallic nanostructures such as nanoholes,1 nanoparticles,24 and sharp tips5 are key elements for plasmonics,6metamaterials,7,8 and near-field optics.5 Advanced top-down fabrication methods can produce precision-patterned metallic nanostructures on solid substrates such as silicon wafers.9 Placing these metal nanostructures on stretchable substrates can add a new degree of freedom to plasmonic devices and metamaterials to mechanically tune their optical properties. These func-tional films can also wrap around nonplanar surfaces for applications such as strain sen-sors,10,11 touch panels,12 curved displays,1