Publications by Hsiang-Chu Wang

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In this thesis, we mainly utilize silver to construct the meta-atoms. Although suffering from easily oxidized, its excellent lossless property throughout the visible range makes it suitable for study. When preserved properly, silver-made metasurfaces can s ...

The material and exact shape of a nanostructure determine its optical response, which is especially strong for plasmonic metals. Unfortunately, only a few plasmonic metals are available, which limits the spectral range where these strong optical effects ca ...

Optical metasurfaces rely on subwavelength scale nanostructures, which puts significant constraints on nanofabrication accuracies. These constraints are becoming increasingly important, as metasurfaces are maturing toward real applications that require the ...

The response of simple plasmonic nanorods to polarized illumination is studied in detail. Depending on the orientation of that polarization with respect to the symmetry axes of the nanostructure, a chiral response can occur, which can be analyzed through a ...

While interference colors have been known for a longtime, conventionalcolor filters have large spatial dimensions and cannot be used tocreate compact pixelized color pictures. Here we report a simple yetelegant interference-based method of creating microsc ...

Metasurfaces rely on the resonances of nanostructures with dimensions in the nanometer range for devices working in the visible regime. The corresponding fabrication technology requires E-beam exposure and can be quite challenging. It is prone to defects a ...

Hsiang-Chu Wang

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Optical metasurfaces: synthesis, nanofabrication, and colorful applications

A Low-Temperature Annealing Method for Alloy Nanostructures and Metasurfaces: Unlocking a Novel Degree of Freedom

Robustness Analysis of Metasurfaces: Perfect Structures Are Not Always the Best

Polarization-Controlled Chromo-Encryption

Aperture-Controlled Fabrication of All-Dielectric Structural Color Pixels

Extending the limits of conventional plasmonics with low temperature alloying of noble metals

Tailoring upconversion luminescence with multi-resonant antennas

Hologram generated by alloy metasurfaces

Perfect gradient metasurfaces are not the most efficient

Upconversion luminescence enhanced by optical antennas

Robustness analysis of metasurfaces

Extending limits of plasmonics with unconventional metasurfaces