| ROY, Rajarshi, David NEČAS a Lenka ZAJÍČKOVÁ. Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field. Carbon. Elsevier, 2021, roč. 179, č. 1, s. 677-682. ISSN 0008-6223. Dostupné z: https://dx.doi.org/10.1016/j.carbon.2021.04.086. |
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@article{1766538,
author = {Roy, Rajarshi and Nečas, David and Zajíčková, Lenka},
article_number = {1},
doi = {http://dx.doi.org/10.1016/j.carbon.2021.04.086},
keywords = {Graphene nanobubbles; Piezoelectric force microscopy; Flexoelectricity},
language = {eng},
issn = {0008-6223},
journal = {Carbon},
title = {Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field},
url = {https://www.sciencedirect.com/science/article/pii/S0008622321004759?via%3Dihub},
volume = {179},
year = {2021}
}
TY - JOUR
ID - 1766538
AU - Roy, Rajarshi - Nečas, David - Zajíčková, Lenka
PY - 2021
TI - Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field
JF - Carbon
VL - 179
IS - 1
SP - 677-682
EP - 677-682
PB - Elsevier
SN - 00086223
KW - Graphene nanobubbles
KW - Piezoelectric force microscopy
KW - Flexoelectricity
UR - https://www.sciencedirect.com/science/article/pii/S0008622321004759?via%3Dihub
N2 - 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.
ER -
ROY, Rajarshi, David NEČAS a Lenka ZAJÍČKOVÁ. Evidence of flexoelectricity in graphene nanobubbles created by tip induced electric field. \textit{Carbon}. Elsevier, 2021, roč.~179, č.~1, s.~677-682. ISSN~0008-6223. Dostupné z: https://dx.doi.org/10.1016/j.carbon.2021.04.086.
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