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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation
Published on: February 25, 2017
Tunable photonic crystal based on capillary attraction and repulsion.
Chia-Tsung Chan1, J Andrew Yeh
1Institute of NanoEngineering and MicroSystems, National Tsing Hua University, Hsinchu, Taiwan.
Optics Express
|October 14, 2010
Summary
This study demonstrates a tunable photonic crystal (PhC) using liquid capillary action. Changing liquid mixtures dynamically tunes the reflective color of porous silicon photonic crystals (PSiPhCs).
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Photonic crystals (PhCs) offer unique light manipulation properties.
- Tunable PhCs are crucial for advanced optical devices.
- Controlling PhC properties with external stimuli remains a challenge.
Purpose of the Study:
- To demonstrate a tunable photonic crystal (PhC) utilizing liquid capillary action.
- To achieve dynamic tuning of the reflective color in porous silicon-based photonic crystals (PSiPhCs).
Main Methods:
- Fabrication of porous silicon-based photonic crystals (PSiPhCs) via electrochemical etching.
- Surface modification for hydrophobic properties.
- Utilizing capillary action by varying liquid mixtures (surface tension) to fill/empty nanoscale voids.
Main Results:
- Demonstrated dynamic tuning of reflective color in PSiPhCs.
- Achieved tunable capillary attraction and repulsion within the PhC structure.
- Successfully controlled PhC optical properties by liquid delivery.
Conclusions:
- Liquid-induced capillary action provides an effective method for tuning PSiPhC optical properties.
- This approach enables dynamic color tuning in photonic devices.
- The demonstrated PSiPhC offers potential for novel optical applications.
