Designing Nanodimple Arrays for Plasmonic Color Patterning
발표자
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초록
내용
Stained glass or Lycurgus cups exhibit plasmonic colors produced by surface plasmon resonance (SPR) in which the incident light is absorbed at the surface of the metallic nanoparticles at resonant wavelength. Single metallic nanoparticles smaller than wavelength can function as a monochromatic color pixel, allowing high-resolution imaging below the diffraction limit. Although E-beam lithography or FIB lithography can create nanostructures in nanoscale, this process suffers from complex and expensive procedure and limited scale of imaging. Here, colloidal lithography is introduced to fabricate a large-scale plasmonic nanostructure composed of a polymer film having a nanodimple arrays and a metal deposited on top of the nanodimple arrays. Furthermore, plasmonic color patterning can be realized using photolithographic process combined with creep deformation of the polymer films by a thermal input.