Browsing by Author "Mauricio M. Terrones"

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Glaphene: A Hybridization of 2D Silica Glass and Graphene
(John Wiley and Sons Inc, 2025) Sathvik Ajay Iyengar; Manoj Tripathi; Anchal Srivastava; Abhijit Biswas; Tia Gray; Mauricio M. Terrones; Alan B. Dalton; Marcos A. Pimenta; Róbert Vajtai; Vincent Meunier; Pulickel Madhava Ajayan
2D materials provide ideal platforms for breakthroughs in both fundamental science and practical, real-world applications. Despite the broad diversity of 2D materials, most integration efforts have focused on homo/hetero-structural stacking and Janus structures. In this paper, we introduce “glaphene”—a hybrid of two fundamentally different materials: 2D silica glass and graphene. We propose a metastable hybrid structure based on first-principles calculations, synthesize it via scalable liquid precursor-based vapor-phase growth, and chemically validate the interlayer structure and hybridization using extensive optical and electron spectroscopy, mass spectrometry, and atomic-resolution electron microscopy. Using probe microscopy, we reveal that electronic cloud redistribution at the interface—beyond conventional van der Waals interactions—drives interlayer hybridization via a strong electronic proximity effect. By reconstructing the energy level diagram of glaphene through both theory and experiment, we show that the combination of semi-metallic graphene (Eg≈0 eV) and insulating 2D silica glass (Eg, exp≈8.2 eV, Eg, th≈7 eV) results in a semiconducting “glaphene” (Eg, exp≈3.6 eV, Eg, th≈4 eV) formed through out-of-plane pz hybridization. This work paves the way for scalable, bottom-up methodologies to bring interlayer hybridization and its emergent properties to the 2D materials toolbox. © 2025 The Author(s). Advanced Materials published by Wiley-VCH GmbH.