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Direct measurements of interfacial adhesion in 2D materials and van der Waals heterostructures in ambient air

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  • Hossein Rokni

    (University of Michigan)

  • Wei Lu

    (University of Michigan
    University of Michigan)

Abstract

Interfacial adhesion energy is a fundamental property of two-dimensional (2D) layered materials and van der Waals heterostructures due to their intrinsic ultrahigh surface to volume ratio, making adhesion forces very strong in many processes related to fabrication, integration and performance of devices incorporating 2D crystals. However, direct quantitative characterization of adhesion behavior of fresh and aged homo/heterointerfaces at nanoscale has remained elusive. Here, we use an atomic force microscopy technique to report precise adhesion measurements in ambient air through well-defined interactions of tip-attached 2D crystal nanomesas with 2D crystal and SiOx substrates. We quantify how different levels of short-range dispersive and long-range electrostatic interactions respond to airborne contaminants and humidity upon thermal annealing. We show that a simple but very effective precooling treatment can protect 2D crystal substrates against the airborne contaminants and thus boost the adhesion level at the interface of similar and dissimilar van der Waals heterostructures. Our combined experimental and computational analysis also reveals a distinctive interfacial behavior in transition metal dichalcogenides and graphite/SiOx heterostructures beyond the widely accepted van der Waals interaction.

Suggested Citation

  • Hossein Rokni & Wei Lu, 2020. "Direct measurements of interfacial adhesion in 2D materials and van der Waals heterostructures in ambient air," Nature Communications, Nature, vol. 11(1), pages 1-14, December.
  • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19411-7
    DOI: 10.1038/s41467-020-19411-7
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    Cited by:

    1. Josef Schätz & Navin Nayi & Jonas Weber & Christoph Metzke & Sebastian Lukas & Jürgen Walter & Tim Schaffus & Fabian Streb & Eros Reato & Agata Piacentini & Annika Grundmann & Holger Kalisch & Michael, 2024. "Button shear testing for adhesion measurements of 2D materials," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    2. You Meng & Xiaocui Li & Xiaolin Kang & Wanpeng Li & Wei Wang & Zhengxun Lai & Weijun Wang & Quan Quan & Xiuming Bu & SenPo Yip & Pengshan Xie & Dong Chen & Dengji Li & Fei Wang & Chi-Fung Yeung & Chan, 2023. "Van der Waals nanomesh electronics on arbitrary surfaces," Nature Communications, Nature, vol. 14(1), pages 1-14, December.
    3. Boqing Liu & Tanju Yildirim & Tieyu Lü & Elena Blundo & Li Wang & Lixue Jiang & Hongshuai Zou & Lijun Zhang & Huijun Zhao & Zongyou Yin & Fangbao Tian & Antonio Polimeni & Yuerui Lu, 2023. "Variant Plateau’s law in atomically thin transition metal dichalcogenide dome networks," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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