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A flat lens with tunable phase gradient by using random access reconfigurable metamaterial.

Weiming Zhu1, Qinghua Song2, Libin Yan1

  • 1School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798.

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|July 18, 2015
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Summary

Researchers demonstrate the first optofluidic metamaterial, enabling individual control over metamolecule properties. This random-access reconfigurable metamaterial leads to the first tunable flat lens with wavefront-reshaping abilities.

Keywords:
metamaterialsmicrofluidicsoptofluidicstunable flat lens

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Area of Science:

  • Optofluidics
  • Metamaterials
  • Nanophotonics

Background:

  • Metamaterials offer unique electromagnetic properties.
  • Controlling metamaterial properties dynamically remains a challenge.

Purpose of the Study:

  • To demonstrate the first optofluidic metamaterial.
  • To enable continuous tuning of individual metamolecule resonant properties.
  • To develop a tunable flat lens with wavefront-reshaping capabilities.

Main Methods:

  • Integration of microfluidic systems with metamaterial fabrication.
  • Utilizing fluid dynamics to alter metamolecule resonant frequencies.
  • Characterization of the optofluidic metamaterial's optical response.

Main Results:

  • Successful demonstration of an optofluidic metamaterial.
  • Achieved continuous, on-demand tuning of individual metamolecule properties.
  • First realization of a tunable flat lens with wavefront-reshaping capabilities.

Conclusions:

  • Optofluidic metamaterials offer unprecedented control over light.
  • This technology enables novel applications in adaptive optics and flat optics.
  • The random-access reconfigurable metamaterial is a significant advancement in tunable photonic devices.