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New Tool Challenges Atom Substitution Theories in Moiré Structures

9/24/2025

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Summary

Story summary

Oak Ridge National Laboratory (ORNL) and University of Tennessee developed Gomb-Net to visualize 2D moiré structures on PCs.
The tool locates dopant atoms with a neural network for accessible analysis.
It finds moiré-pattern atom positions do not affect atom substitution, challenging prior theories.
The researchers doped tungsten disulfide (WS2) with selenium to tune electronic and optical properties; Nano Letters published.

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Story summary

Oak Ridge National Laboratory (ORNL) and University of Tennessee developed Gomb-Net to visualize 2D moiré structures on PCs.
The tool locates dopant atoms with a neural network for accessible analysis.
It finds moiré-pattern atom positions do not affect atom substitution, challenging prior theories.
The researchers doped tungsten disulfide (WS2) with selenium to tune electronic and optical properties; Nano Letters published.