Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00577701" target="_blank" >RIV/68378271:_____/23:00577701 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0346823" target="_blank" >https://hdl.handle.net/11104/0346823</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2023.123357" target="_blank" >10.1016/j.molliq.2023.123357</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Popis výsledku v původním jazyce

Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.

Název v anglickém jazyce

Effect of temperature on memory effect in nematic phase of liquid crystal and their composites with aerosil and geothite nanoparticles

Popis výsledku anglicky

Liquid crystal doped with aerosil nanoparticles is known for exhibiting an electromechanical memory effect. After exposing the composite to the electric field the state induced by the electric field stays remembered due to the presence of aerosil nanoparticles. In this paper, we investigated the memory effect induced by electric and magnetic fields. Liquid crystal 4-cyano-4′-pentylbiphenyl doped with non-magnetic aerosil nanoparticles and a mixture of aerosil nanoparticles and elongated magnetic goethite nanoparticles were explored via capacitance measurements. Studied systems exhibited hysteresis in capacitance-voltage and capacitance-magnetic field dependences. The measurements revealed a great impact of temperature and heating/cooling rate on the hysteresis of the system. Observed electromechanical and magnetomechanical memory effect provides potential use of the system as voltage-driven or magnetic field-driven non-volatile memory devices.

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

<a href="/cs/project/EF16_019%2F0000760" target="_blank" >EF16_019/0000760: Fyzika pevných látek pro 21. století</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

391

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

123357

Kód UT WoS článku

001104099500001

EID výsledku v databázi Scopus

2-s2.0-85174681124