Detail publikace

Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field

ROY, R. NEČAS, D. ZAJÍČKOVÁ, L.

Originální název

Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Strain engineering in graphene nanobubbles (GNB) has made significant progress in recent years opening new possibilities to observe quantum phenomena such as Newton's ring oscillation and generation of pseudomagnetic field. Here, we demonstrated that controlled formation of graphene nanobubbles is possible on transferred graphene on standard SiO2/Si substrate by the application of external electric field through the tip of piezoelectric force microscope (PFM). We manipulated their dimensional attributes (height, area and volume) by varying tip ramp voltage and tip distance. Prominent out-of-plane piezo-response (flexoelectricity) was observed using PFM in the newly created nanobubbles due to the presence of non-uniform strain gradients in the nanobubbles. Moreover, we found quadratic dependence of the effective piezoelectric coefficient proportional to the increasing bubble creation ramp voltage. Our work motivates the exploration of flexoelectric properties and related applications with 2D nanobubbles on different substrates. (C) 2021 Elsevier Ltd. All rights reserved.

Klíčová slova

Graphene nanobubbles; Piezoelectric force microscopy; Flexoelectricity

Autoři

ROY, R.; NEČAS, D.; ZAJÍČKOVÁ, L.

Vydáno

1. 8. 2021

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

OXFORD

ISSN

0008-6223

Periodikum

CARBON

Ročník

179

Číslo

1

Stát

Spojené státy americké

Strany od

677

Strany do

682

Strany počet

6

URL

https://www.mdpi.com/2075-4701/11/8/1331

BibTex

@article{BUT174897,
  author="Rajarshi {Roy} and David {Nečas} and Lenka {Zajíčková}",
  title="Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field",
  journal="CARBON",
  year="2021",
  volume="179",
  number="1",
  pages="677--682",
  doi="10.1016/j.carbon.2021.04.086",
  issn="0008-6223",
  url="https://www.mdpi.com/2075-4701/11/8/1331"
}