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Digital metamaterials.

Cristian Della Giovampaola1, Nader Engheta1

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This summary is machine-generated.

Inspired by binary principles, this study introduces digital metamaterials. By mixing two basic

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Area of Science:

  • Metamaterials Science
  • Electromagnetics
  • Optical Engineering

Background:

  • The principle of balancing complexity and simplicity is crucial in science and engineering.
  • Boolean algebra and binary systems (0s and 1s) revolutionized digital electronics and information technology.
  • Metamaterials offer unique electromagnetic properties but often involve complex designs.

Purpose of the Study:

  • To propose and develop the concept of digital metamaterials inspired by binary systems.
  • To investigate the synthesis of electromagnetic metamaterials with desired permittivity using two elemental materials.
  • To demonstrate the application of this digital approach in designing various optical elements.

Main Methods:

  • Defining 'metamaterial bits' as elemental building blocks with distinct permittivity functions.
  • Employing spatial mixtures of these metamaterial bits to create 'metamaterial bytes' with effective parameters.
  • Analytical and numerical simulations to validate the proposed methodology.

Main Results:

  • Demonstrated that spatial mixtures of metamaterial bits yield effective material parameters distinct from the constituent bits.
  • Successfully designed digital optical elements including convex lenses, graded-index lenses, epsilon-near-zero (ENZ) supercoupling structures, and hyperlenses.
  • Validated the effectiveness of the digital metamaterial approach through simulations.

Conclusions:

  • The digital metamaterial concept offers a powerful and simple method for designing advanced optical components.
  • This approach leverages binary principles for precise control over material properties.
  • Digital metamaterials pave the way for simplified fabrication and novel functionalities in optics and electromagnetics.