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Related Concept Videos

Orthogonal Trajectories01:26

Orthogonal Trajectories

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Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
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Independent Manipulating of Orthogonal-Polarization Terahertz Waves Using A Reconfigurable Graphene-Based

Li Deng1, Yuanyuan Zhang2, Jianfeng Zhu3

  • 1Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, No.10 Xitucheng Rd., Beijing 100876, China. dengl@bupt.edu.cn.

Materials (Basel, Switzerland)
|September 28, 2018
PubMed
Summary

This study introduces a reconfigurable graphene metasurface capable of independently controlling terahertz waves. This innovation enables advanced functionalities for miniaturized electronic and optical devices.

Keywords:
graphenemetasurfaceorthogonal-polarizationreconfigurable

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Area of Science:

  • Metamaterials
  • Terahertz technology
  • Graphene electronics

Background:

  • Modern electronic devices trend towards miniaturization and integration.
  • Controlling terahertz waves with high precision is crucial for advanced applications.
  • Existing metasurfaces often lack independent control over orthogonal polarizations.

Purpose of the Study:

  • To propose a reconfigurable multi-functional graphene-based metasurface.
  • To demonstrate independent manipulation of orthogonal linearly polarized terahertz waves.
  • To enable functionalities like beam splitting, deflecting, and polarization conversion.

Main Methods:

  • Designing unit-cells with orthogonal graphene strips on a grounded substrate.
  • Utilizing anisotropic responses for independent electrical tuning of reflection phases.
  • Numerical demonstration and analysis of proposed functionalities.

Main Results:

  • Independent control over reflection phases for x- and y-polarized terahertz waves.
  • Successful numerical demonstration of beam splitting, beam deflecting, and polarization converting.
  • Excellent performance consistent with theoretical predictions.

Conclusions:

  • The proposed graphene metasurface offers reconfigurable and independent control of terahertz waves.
  • This technology supports miniaturization in electronic/optical devices.
  • Potential applications in next-generation communication, sensing, and imaging systems.