# Realization of Z2 Topological Photonic Insulators Made from Multilayer Transition Metal Dichalcogenides

**URL:** <https://community.materialssquare.com/t/realization-of-z2-topological-photonic-insulators-made-from-multilayer-transition-metal-dichalcogenides/922>\
**Category:** News\
**Created:** [November 20, 2024, 5:33pm UTC](https://community.materialssquare.com/t/realization-of-z2-topological-photonic-insulators-made-from-multilayer-transition-metal-dichalcogenides/922 "2024-11-20T17:33:45Z")\
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**Author:** ![gabriele1](https://yyz1.discourse-cdn.com/flex003/user_avatar/community.materialssquare.com/gabriele1/32/20_2.png) [@gabriele1](https://community.materialssquare.com/u/gabriele1)\
**Post date:** [November 20, 2024, 5:33pm UTC](https://community.materialssquare.com/t/realization-of-z2-topological-photonic-insulators-made-from-multilayer-transition-metal-dichalcogenides/922/1 "2024-11-20T17:33:45Z")

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Researchers have demonstrated the realization of Z2 topological photonic insulators using multilayer tungsten disulfide (WS2), a transition metal dichalcogenide, for advanced nanophotonic applications. By leveraging the material’s high refractive index, optical anisotropy, and robust excitonic properties, they designed spin-Hall topological photonic lattices featuring unidirectional edge states. The lattices, patterned with precise triangular nanoholes, showcase propagation of light along domain interfaces with low scattering losses. The study emphasizes WS2’s versatility, including ease of integration onto substrates and tunable optical properties through thickness and lattice configurations. These findings mark a significant step in applying van der Waals materials to create scalable, high-performance photonic devices.

For more details, please continue reading the full article under the following link:

[https://pubs.acs.org/doi/10.1021/acsnano.4c09295](https://pubs.acs.org/doi/10.1021/acsnano.4c09295)

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In general, if you enjoy reading this kind of scientific news articles, I would also be keen to connect with fellow researchers based on common research interests, including the possibility to discuss about any potential interest in the Materials Square cloud-based online platform ( [www.matsq.com](http://www.matsq.com) ), designed for streamlining the execution of materials and molecular atomistic simulations!

Best regards,

Dr. Gabriele Mogni  
Technical Consultant and EU Representative  
Virtual Lab Inc., the parent company of the Materials Square platform  
Website: [Home | Virtual Lab Inc.](http://www.virtuallab.co.kr/en/)  
Email: gabriele@simulation.re.kr

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