Wafer-Scale 3D Nanoplasmonics by Shadow Growth

Abstract

Nanoplasmonics provides powerful routes to engineer light–matter interactions beyond planar optics, particularly when three-dimensional geometry is combined with scalable fabrication. In this talk, I will introduce glancing angle deposition (GLAD) as a “shadow-growth” technique that enables wafer-scale production of 3D nanoplasmonic platforms. A key strength of GLAD is its flexible control over both materials and geometry, supported by a broad library of PVD-compatible materials and a wide range of 3D architectures, including nanorods and nanohelices. This structural and materials engineering provides an effective handle to tailor plasmonic resonances and polarization responses, opening opportunities for color-sensitive optical functions. I will highlight recent examples showing that GLAD-grown 3D nanoplasmonic structures enable controllable coloration and spectral conversion from the UV to the NIR, relevant to sensing and vision-oriented photonic systems. Overall, these results illustrate how scalable 3D nanoplasmonics can bridge fundamental light–matter interaction engineering and practical, system-relevant photonic functionalities