Universität zu Köln

Rasche, Bertold ORCID: 0000-0002-9691-1903, Brunner, Julius, Schramm, Tim, Ghimire, Madhav Prasad ORCID: 0000-0003-2783-4008, Nitzsche, Ulrike, Buchner, Bernd, Giraud, Romain ORCID: 0000-0001-5526-5514, Richter, Manuel and Dufouleur, Joseph ORCID: 0000-0003-4580-1920 (2022). Determination of Cleavage Energy and Efficient Nanostructuring of Layered Materials by Atomic Force Microscopy br. Nano Lett., 22 (9). S. 3550 - 3557. WASHINGTON: AMER CHEMICAL SOC. ISSN 1530-6992

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Abstract

A method is presented to use atomic force microscopy to measure thecleavage energy of van der Waals materials and similar quasi-two-dimensional materials. Thecleavage energy of graphite is measured to be 0.36 J/m2, in good agreement with literaturedata. The same method yields a cleavage energy of 0.6 J/m2for MoS2as a representative ofthe dichalcogenides. In the case of the weak topological insulator Bi14Rh3I9no cleavageenergy is obtained, although cleavage is successful with an adapted approach. The cleavageenergies of these materials are evaluated by means of density-functional calculations andliterature data. This further validates the presented method and sets an upper limit of about0.7 J/m2to the cleavage energy that can be measured by the present setup. In addition, this method can be used as a tool formanipulating exfoliatedflakes, prior to or after contacting, which may open a new route for the fabrication of nanostructures

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Rasche, Bertold UNSPECIFIED orcid.org/0000-0002-9691-1903 UNSPECIFIED Brunner, Julius UNSPECIFIED UNSPECIFIED UNSPECIFIED Schramm, Tim UNSPECIFIED UNSPECIFIED UNSPECIFIED Ghimire, Madhav Prasad UNSPECIFIED orcid.org/0000-0003-2783-4008 UNSPECIFIED Nitzsche, Ulrike UNSPECIFIED UNSPECIFIED UNSPECIFIED Buchner, Bernd UNSPECIFIED UNSPECIFIED UNSPECIFIED Giraud, Romain UNSPECIFIED orcid.org/0000-0001-5526-5514 UNSPECIFIED Richter, Manuel UNSPECIFIED UNSPECIFIED UNSPECIFIED Dufouleur, Joseph UNSPECIFIED orcid.org/0000-0003-4580-1920 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-688452
DOI:	10.1021/acs.nanolett.1c04868
Journal or Publication Title:	Nano Lett.
Volume:	22
Number:	9
Page Range:	S. 3550 - 3557
Date:	2022
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	1530-6992
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SURFACE-ENERGY; GRAPHITE Multiple languages Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68845