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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU142257" target="_blank" >RIV/00216305:26620/21:PU142257 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/21:00121550

Výsledek na webu

<a href="https://www.mdpi.com/2075-4701/11/8/1331" target="_blank" >https://www.mdpi.com/2075-4701/11/8/1331</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2021.04.086" target="_blank" >10.1016/j.carbon.2021.04.086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

CARBON

ISSN

0008-6223

e-ISSN

1873-3891

Svazek periodika

179

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

677-682

Kód UT WoS článku

000661625400065

EID výsledku v databázi Scopus

2-s2.0-85105275577