Dominguez Ordonez, Ramon Camilo (2025) Generating Switchable Structural Colors in the Visible Range Using Phase-Change Materials. Research Paper, Nanoscience.
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Abstract
Phase-change materials (PCMs) have emerged as versatile platforms for reconfigurable photonics as a result of their tunable optical properties in amorphous and crystalline states. This review focuses on their application in generating switchable structural color in the visible spectrum, highlighting how abrupt changes in refractive index and absorption enable active control of interference-based coloration. We examine the optical behavior of widely studied PCMs, such as Ge2Sb2Te5 (GST), VO2, Sb2S3, and Sb2Se3, and assess their performance in terms of index contrast, optical loss, and spectral coverage. Switching mechanisms, including thermal, electrical, and all-optical actuation, are compared in the context of dynamic modulation and device integration. Finally, we present recent experimental demonstrations of structural color generation, ranging from multilayer interference stacks to nanoscale FIB-patterned metasurfaces, with particular emphasis on wide-bandgap PCMs that enable high-resolution, low-loss color rendering. We conclude by describing key challenges related to scalability, endurance, and addressability, and highlight future directions toward fully reconfigurable nanostructured photonic systems.
| Item Type: | Thesis (Research Paper) |
|---|---|
| Supervisor name: | Kooi, B.J. |
| Degree programme: | Nanoscience |
| Thesis type: | Research Paper |
| Language: | English |
| Date Deposited: | 31 Jul 2025 09:06 |
| Last Modified: | 05 Aug 2025 10:02 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/36516 |
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