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Surface Wave Cloak from Graded Refractive Index Nanocomposites
L La Spada1, T M McManus1, A Dyke2
1School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, UK.
Scientific Reports
|July 16, 2016
Summary
Researchers demonstrate a novel dielectric surface wave cloak using gradient index materials and additive manufacturing. This breakthrough controls surface waves, with applications from microwave to optical frequencies.
Area of Science:
- Applied Electromagnetics
- Metamaterials
- Nanophotonics
Background:
- Surface wave manipulation is crucial for THz and optical applications.
- Transformation Optics (TO) and metamaterials are key enablers.
- Controlling surface wave propagation requires advanced material engineering.
Purpose of the Study:
- To experimentally demonstrate a dielectric surface wave cloak.
- To showcase the use of engineered gradient index materials.
- To illustrate the potential of nanocomposites for surface wave control.
Main Methods:
- Analytical design of a dielectric surface wave cloak.
- Validation through numerical simulations.
- Experimental measurements using advanced additive manufacturing.
Main Results:
- Successful experimental demonstration of a dielectric surface wave cloak.
- Good agreement between analytical design, simulations, and measurements.
- Effective control of surface wave propagation demonstrated.
Conclusions:
- Engineered gradient index materials can create effective surface wave cloaks.
- Advanced additive manufacturing enables precise control over nanocomposites.
- The design approach has broad applications in controlling surface plasmon polaritons (SPPs) and nanoantenna radiation from microwave to optical frequencies.
