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Updated: Dec 13, 2025

Fabricating Metamaterials Using the Fiber Drawing Method

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

Ultrafast Topological Engineering in Metamaterials.

Renwen Yu¹, Rasoul Alaee², Robert W Boyd^2,3

¹ICFO-Institut de Ciencies Fotoniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain.

Physical Review Letters

|August 4, 2020

Summary

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We demonstrate ultrafast topological transitions in graphene metamaterials using optical pumping. This enables rapid control over light emission, beam steering, and subwavelength imaging.

Area of Science:

Photonics and Materials Science
Optics and Photonics
Condensed Matter Physics

Background:

Transient optical heating can induce phase transitions in natural materials.
Metamaterials offer engineered responses, including topological photonic properties.
Graphene's photothermal properties are key for ultrafast optical control.

Purpose of the Study:

To predict and theoretically demonstrate a topological transition in graphene metamaterials.
To investigate the ultrafast dynamics of this transition under optical pumping.
To explore potential applications of this phenomenon in optical technologies.

Main Methods:

Utilizing ultrashort laser pulse irradiation for optical pumping.
Analyzing the isofrequency dispersion contours of layered graphene metamaterials.

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Last Updated: Dec 13, 2025

Fabricating Metamaterials Using the Fiber Drawing Method

Fabricating Metamaterials Using the Fiber Drawing Method

Published on: October 18, 2012

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Fabrication of Nanopillar-Based Split Ring Resonators for Displacement Current Mediated Resonances in Terahertz Metamaterials

Published on: March 23, 2017

Exploiting graphene's photothermal properties for rapid state changes.

Main Results:

A topological transition from elliptic to hyperbolic contours was predicted.
The transition occurs on a subpicosecond timescale.
Demonstrated theoretical applications in controlling optical emitter decay rates, ultrafast beam steering, and dynamical subwavelength imaging.

Conclusions:

Optical pumping of graphene metamaterials enables ultrafast topological transitions.
This phenomenon provides a disruptive approach for controlling light.
Opens new avenues for ultrafast optical signal processing and imaging.