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Related Concept Videos

Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...

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Cost-Efficient Deterministic Engineering of Single Photon Emitters in Two-Dimensional Materials.

Sanja Djurdjić Mijin1,2, Ismael dePedro-Embid3, Nikita Panov4

  • 1Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid (UAM), 28049 Madrid, Spain.

ACS Applied Materials & Interfaces
|May 15, 2025
PubMed
Summary

Researchers developed a cost-efficient method using bipyramidal microparticles to create single-photon emitters in gallium selenide (GaSe) flakes. This accessible technique advances quantum light technologies in two-dimensional materials.

Keywords:
atomic-scale defectsgallium selenidesingle-photon emittersstrain-engineeringtwo-dimensional materials

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Area of Science:

  • Materials Science
  • Quantum Optics
  • Nanotechnology

Background:

  • Two-dimensional (2D) materials are promising for quantum light emission due to tunable bandgaps and strong carrier confinement.
  • Existing methods for creating single-photon emitters in 2D materials include strain, defect, and surface functionalization engineering.

Purpose of the Study:

  • To present a practical, cost-efficient, and deterministic method for strain engineering single-photon emitters in 2D materials.
  • To utilize optically active microparticles for localized strain induction without interfering with the host material's optical properties.

Main Methods:

  • Deterministic strain engineering of thin gallium selenide (GaSe) flakes using bipyramidal microparticles.
  • Optical characterization to confirm the generation of single-photon emitters and assess strain effects.
  • Comparison of results with existing strain engineering techniques for 2D materials.

Main Results:

  • Successful implementation of a cost-efficient methodology for creating single-photon emitters in GaSe.
  • Demonstrated strong agreement with previous studies on strain-induced emitters in multilayer GaSe.
  • The bipyramidal microparticle method provides a non-interfering optical approach for strain induction.

Conclusions:

  • The proposed technique offers an accessible and low-cost platform for deterministic strain engineering of single-photon sources in 2D materials.
  • This method can significantly advance research in nanophotonics and quantum light technologies utilizing layered semiconductors.
  • The approach facilitates broader laboratory implementation, accelerating the understanding and application of 2D quantum emitters.