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Illusions and cloaks for surface waves.

T M McManus1, J A Valiente-Kroon2, S A R Horsley3

  • 1School of Electronic Engineering and Computer Science, Queen Mary University of London, E1 4NS, England, , UK.

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Summary
This summary is machine-generated.

Transformation Optics enables illusion devices by transforming electromagnetic waves between surfaces. This allows flat surfaces to mimic curved ones for optical illusions, and vice versa for cloaking.

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Area of Science:

  • Electromagnetics
  • Transformation Optics
  • Acoustics
  • Thermodynamics

Background:

  • Transformation Optics (TO) has expanded beyond electromagnetics into acoustics and thermodynamics.
  • While cloaking is a known application, TO also enables intriguing illusion devices.

Purpose of the Study:

  • To propose a general method for transforming electromagnetic waves between arbitrary surfaces.
  • To enable flat surfaces to replicate the scattering behavior of curved surfaces, and vice versa.

Main Methods:

  • Development of a general transformation method for electromagnetic waves.
  • Simulation of device performance using thin effective media with engineered material properties.

Main Results:

  • Demonstrated that a flat surface can reproduce the scattering of a curved surface, creating optical illusions.
  • Showcased the inverse capability: a curved surface mimicking a flat one for cloaking.

Conclusions:

  • The proposed method offers a versatile approach for both optical illusion and cloaking devices.
  • Engineered materials and thin effective media are key to achieving the simulated performance.