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Electromechanical sensing of substrate charge hidden under atomic 2D crystals

Research output: Contribution to journalLetter

Published

Journal publication date23/05/2014
JournalNano Letters
Journal number6
Volume14
Number of pages5
Pages3400-3404
Original languageEnglish

Abstract

The functionality of graphene and other two-dimensional materials in electronic devices is highly influenced by the film–substrate charge transfer affecting local carrier density. We demonstrate that charges buried under the few layer graphene on/in the insulating substrate can be detected using electromechanical actuation of the conductive atomically thin layers, allowing measurements of areal density of film–substrate transferred charges under few layer graphene and MoS2 suspended films.

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