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Updated: Feb 12, 2026
11:42
Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
Published on: July 24, 2015
16.1K
Tunable Bragg defect mode in one-dimensional photonic crystal containing a graphene-embedded defect layer
Applied Optics
|April 1, 2018
Summary
Researchers tuned terahertz transmission in defective photonic crystals using graphene. Changing graphene
Area of Science:
- Photonics
- Condensed Matter Physics
- Materials Science
Background:
- One-dimensional photonic crystals offer unique transmission properties.
- Graphene's tunable electronic properties present opportunities for novel photonic devices.
Purpose of the Study:
- To analyze the transmission properties of defective one-dimensional photonic crystals in the terahertz region.
- To investigate the tunability of defect modes using graphene.
Main Methods:
- Transfer matrix method for analyzing transmission properties.
- Numerical simulations to study defect mode frequency variations.
Main Results:
- Defect mode frequency is tunable by altering graphene's chemical potential.
- Incident angle affects the defect mode's frequency response.
- Gate voltage can effectively control graphene's chemical potential for tuning.
Conclusions:
- Tunable terahertz transmission is achievable in graphene-based photonic crystals.
- The findings are applicable to designing tunable filters and sensors in the terahertz spectrum.
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