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Highly Efficient Bulk-Crystal-Sized Exfoliation of 2D Materials under Ultrahigh Vacuum
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SYSNO ASEP 0585020 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Highly Efficient Bulk-Crystal-Sized Exfoliation of 2D Materials under Ultrahigh Vacuum Author(s) Haider, Golam (UFCH-W) ORCID, RID
Gastaldo, Michele (UFCH-W)
Karim, Bazlul (UFCH-W)
Plšek, Jan (UFCH-W) RID, ORCID
Varade, V. (CZ)
Volochanskyi, Oleksandr (UFCH-W) ORCID, SAI
Vejpravová, J. (CZ)
Kalbáč, Martin (UFCH-W) RID, ORCIDSource Title ACS Applied Electronic Materials. - : American Chemical Society
(2024)Number of pages 8 s. Language eng - English Country US - United States Keywords raman-scattering ; shear ; ultrahigh vacuum exfoliation ; noble metals ; large-area monolayers ; interfacial interaction ; Raman spectroscopy Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry R&D Projects GX20-08633X GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UFCH-W - RVO:61388955 UT WOS 001192441900001 EID SCOPUS 85189083161 DOI 10.1021/acsaelm.3c01824 Annotation In the realm of materials science and nanotechnology, the pursuit of the scalable preparation of high-quality monolayers of two-dimensional (2D) materials is a significant challenge. Despite the widespread interest sparked by the unique quantum mechanical effects in these materials, achieving scalable and controlled syntheses remains hindered by a lack of suitable techniques. This work presents a facile exfoliation approach that successfully yields bulk-crystal-sized 2D monolayers, approaching 100% under ultrahigh vacuum (UHV) conditions. The process was demonstrated by exfoliating MoS2 on Au and Ag substrates. Raman spectroscopy reveals a strong dispersive interaction at the metal/MoS2 interface, inducing a high strain field on the topmost layer of the bulk crystal. This strain field's inhomogeneous distribution reduces interlayer van der Waals interactions, enhancing the selectivity of monolayer exfoliation. Beyond scalable exfoliation, our method opens avenues for obtaining monolayers of materials unstable under ambient conditions, emphasizing its broader applicability in advancing the synthesis of 2D materials for diverse applications. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2025 Electronic address https://pubs.acs.org/doi/10.1021/acsaelm.3c01824?src=getftr
Number of the records: 1