Pre-strain stimulation of electro-mechanical sensitivity of carbon nanotube network/polyurethane composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F16%3A00459866" target="_blank" >RIV/67985874:_____/16:00459866 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/70883521:28610/16:43874588

Výsledek na webu

<a href="http://dx.doi.org/10.1109/JSEN.2016.2573398" target="_blank" >http://dx.doi.org/10.1109/JSEN.2016.2573398</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JSEN.2016.2573398" target="_blank" >10.1109/JSEN.2016.2573398</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pre-strain stimulation of electro-mechanical sensitivity of carbon nanotube network/polyurethane composites

Popis výsledku v původním jazyce

The change of electrical resistance of a highly extensible composite sensors consisting of a network of entangled multi-wall carbon nanotubes and thermoplastic polyurethane elastomer in the course of elongation was stimulated by initial tensile deformation. Though the initial deformation changes irreversibly arrangement of carbon nanotube network, subsequent cyclic elongation and corresponding resistance change is stable. The resistance sensitivity, quantified by a gauge factor, which defines sensitivity of strain sensor as the relative resistance change divided by the applied strain, increases nearly five-times from the value of about 5 for not initially elongated composites. This is a substantial increase, which ranks the composites among materials with the highest electromechanical sensitivity. The observed sensitivity increased is discussed on basis of the cracking of nanotube network with extension when the number of contacts between nanotubes decreases and thus the network has fewer interconnections that can carry an electric current.

Název v anglickém jazyce

Pre-strain stimulation of electro-mechanical sensitivity of carbon nanotube network/polyurethane composites

Popis výsledku anglicky

The change of electrical resistance of a highly extensible composite sensors consisting of a network of entangled multi-wall carbon nanotubes and thermoplastic polyurethane elastomer in the course of elongation was stimulated by initial tensile deformation. Though the initial deformation changes irreversibly arrangement of carbon nanotube network, subsequent cyclic elongation and corresponding resistance change is stable. The resistance sensitivity, quantified by a gauge factor, which defines sensitivity of strain sensor as the relative resistance change divided by the applied strain, increases nearly five-times from the value of about 5 for not initially elongated composites. This is a substantial increase, which ranks the composites among materials with the highest electromechanical sensitivity. The observed sensitivity increased is discussed on basis of the cracking of nanotube network with extension when the number of contacts between nanotubes decreases and thus the network has fewer interconnections that can carry an electric current.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

IEEE Sensors Journal

ISSN

1530-437X

e-ISSN

—

Svazek periodika

16

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

5898-5903

Kód UT WoS článku

000380126000008

EID výsledku v databázi Scopus

2-s2.0-84978386264