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Recent Advances in Liquid Metal Photonics: Technologies and Applications.
Peter Q Liu1, Xianglong Miao1, Shreyan Datta1
1Department of Electrical Engineering, University at Buffalo, the State University of New York, Buffalo, NY 14260, USA.
Optical Materials Express
|January 22, 2024
Summary
Gallium-based liquid metals offer unique advantages for soft electronics and photonics due to their low melting point, low toxicity, and optical properties. This review covers their fabrication and diverse photonics applications.
Area of Science:
- Materials Science
- Photonics
- Nanotechnology
Background:
- Near-room-temperature liquid metals, especially gallium-based ones, are ideal for soft, stretchable, and reconfigurable devices.
- Their low melting points, minimal toxicity, and negligible vapor pressure enhance their suitability for various applications.
- Gallium-based liquid metals possess attractive optical properties for photonics.
Purpose of the Study:
- To review the material properties of gallium-based liquid metals.
- To highlight fabrication techniques for liquid-metal-based structures and devices.
- To explore photonics applications across different spectral regions.
Main Methods:
- Literature review of material properties.
- Summary of fabrication techniques (e.g., microfluidics, 3D printing).
- Analysis of photonic device performance in various spectral ranges.
Main Results:
- Gallium-based liquid metals demonstrate tunable optical properties.
- Successful fabrication of diverse photonic devices like waveguides, sensors, and modulators.
- Applications span from visible to infrared spectrum.
Conclusions:
- Gallium-based liquid metals are promising for advanced photonic applications.
- Further research is needed to overcome fabrication and integration challenges.
- The field presents significant opportunities for innovation in soft photonics.
