Precise measurement of the configurational energy of bent graphene membranes via three-dimensional force field spectroscopy

Autor:	Keita Nishioka, Makoto Ashino, Keiji Hayashi, Roland Wiesendanger
Rok vydání:	2021
Předmět:	Membrane Materials science Graphene law Force field (physics) Bent molecular geometry Modulus Flexural rigidity Bending Spectroscopy Molecular physics law.invention
Zdroj:	Physical Review B. 104
ISSN:	2469-9969 2469-9950
DOI:	10.1103/physrevb.104.085407
Popis:	Two key parameters for mechanical properties of atomically thin membranes -- bending rigidity and Gaussian modulus -- describe the relationship between configurational (strain) energy and bending curvatures. The authors apply three-dimensional force field spectroscopy, based on atomic force microscopy (AFM), to convex-curved graphene in rolled and unrolled forms. Force-spectra analysis reveals that the configurational energy is measured precisely via the AFM tip that detects spatially varying surface potentials, owing to rehybridization effects and change in next-neighbor hopping caused by the bending curvatures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::159206fc8af3415ca728defbdc13ec96 https://doi.org/10.1103/physrevb.104.085407 Zobrazit plný text záznamu