Electrochemically controlled winding and unwinding of substrate-supported carbon nanoscrolls

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F18%3A00487730" target="_blank" >RIV/61388955:_____/18:00487730 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c7cp08018b" target="_blank" >http://dx.doi.org/10.1039/c7cp08018b</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c7cp08018b" target="_blank" >10.1039/c7cp08018b</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrochemically controlled winding and unwinding of substrate-supported carbon nanoscrolls

Popis výsledku v původním jazyce

Carbon nanoscrolls (CNSs) formed spontaneously on the basal plane of highly ordered pyrolytic graphite (HOPG) show winding and unwinding movements when potential steps from 0 V to0.5 V,0.6 V and0.9 V are applied on HOPG immersed in an aqueous electrolyte solution (0.1 M H 2 SO 4 ). Reversible changes in CNS radial dimensions exceeding 10 nm in the axial direction and 50 nm in the lateral direction are ascribed to variations in the surface tension and electric double-layer structure under applied potentials. Radial motion is observed exclusively on scrolled tube-shaped nanostructures, while other parts of the HOPG surface including planar areas, simple bended and lifted step edges, and kinks remain intact. The mechanism explaining the observed phenomenon is proposed and its significance for prospective applications in electrochemically controlled nanomechanical actuators is outlined.

Název v anglickém jazyce

Electrochemically controlled winding and unwinding of substrate-supported carbon nanoscrolls

Popis výsledku anglicky

Carbon nanoscrolls (CNSs) formed spontaneously on the basal plane of highly ordered pyrolytic graphite (HOPG) show winding and unwinding movements when potential steps from 0 V to0.5 V,0.6 V and0.9 V are applied on HOPG immersed in an aqueous electrolyte solution (0.1 M H 2 SO 4 ). Reversible changes in CNS radial dimensions exceeding 10 nm in the axial direction and 50 nm in the lateral direction are ascribed to variations in the surface tension and electric double-layer structure under applied potentials. Radial motion is observed exclusively on scrolled tube-shaped nanostructures, while other parts of the HOPG surface including planar areas, simple bended and lifted step edges, and kinks remain intact. The mechanism explaining the observed phenomenon is proposed and its significance for prospective applications in electrochemically controlled nanomechanical actuators is outlined.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/GA17-05167S" target="_blank" >GA17-05167S: Micro/nano-pružinou zesílená fotoakustická detekce: přístroje, metody a aplikace</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

20

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

5900-5908

Kód UT WoS článku

000427085400056

EID výsledku v databázi Scopus

2-s2.0-85042629396